Delayed start problem
10-01-2007, 10:36 AM
#61
Guest
Posts: n/a
Re: Delayed start problem
On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
> nrs wrote:
> > My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> > it is cool. When the key is turned to run, the check engine light
> > does not turn on right away. There is a delay of a few seconds and
> > then the relays in the power distribution box under the hood start to
> > click rapidly. Once this happens, the fuel pump runs for a short
> > while and the jeep can be started. It seems like the computer is not
> > aware right away that the ignition has been turned to run. If I
> > immediately turn the key to run again (after first returning it to
> > lock) the check engine and fuel pump turn on normally. After letting
> > the jeep sit turned off for about 5-10 minutes, the problem will
> > return. Later in the day when it is hot, this almost never happens but
> > it does once in a long while, usually after sitting turned off for at
> > least a few hours. What could be causing this? What could cause it to
> > work fine on the second try?
>
> > Thanks
>
> One more thought for you.
>
> There is a recall on your emergency brake lever and the ground for the
> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
> done if the wire doesn't get hooked back up. Maybe your ground there is
> bad?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> (More Off Road album links at bottom of the view page)- Hide quoted text -
>
> - Show quoted text -
The FSM says that not all '95 YJs have this ground wire. Mine doesn't
seem to have it (but it still worked fine for a long time before this
problem started).
> nrs wrote:
> > My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> > it is cool. When the key is turned to run, the check engine light
> > does not turn on right away. There is a delay of a few seconds and
> > then the relays in the power distribution box under the hood start to
> > click rapidly. Once this happens, the fuel pump runs for a short
> > while and the jeep can be started. It seems like the computer is not
> > aware right away that the ignition has been turned to run. If I
> > immediately turn the key to run again (after first returning it to
> > lock) the check engine and fuel pump turn on normally. After letting
> > the jeep sit turned off for about 5-10 minutes, the problem will
> > return. Later in the day when it is hot, this almost never happens but
> > it does once in a long while, usually after sitting turned off for at
> > least a few hours. What could be causing this? What could cause it to
> > work fine on the second try?
>
> > Thanks
>
> One more thought for you.
>
> There is a recall on your emergency brake lever and the ground for the
> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
> done if the wire doesn't get hooked back up. Maybe your ground there is
> bad?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> (More Off Road album links at bottom of the view page)- Hide quoted text -
>
> - Show quoted text -
The FSM says that not all '95 YJs have this ground wire. Mine doesn't
seem to have it (but it still worked fine for a long time before this
problem started).
10-01-2007, 10:46 AM
#62
Guest
Posts: n/a
Re: Delayed start problem
On Sep 26, 10:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
10-01-2007, 10:46 AM
#63
Guest
Posts: n/a
Re: Delayed start problem
On Sep 26, 10:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
10-01-2007, 10:46 AM
#64
Guest
Posts: n/a
Re: Delayed start problem
On Sep 26, 10:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
10-01-2007, 10:46 AM
#65
Guest
Posts: n/a
Re: Delayed start problem
On Sep 26, 10:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> it is cool. When the key is turned to run, the check engine light
> does not turn on right away. There is a delay of a few seconds and
> then the relays in the power distribution box under the hood start to
> click rapidly. Once this happens, the fuel pump runs for a short
> while and the jeep can be started. It seems like the computer is not
> aware right away that the ignition has been turned to run. If I
> immediately turn the key to run again (after first returning it to
> lock) the check engine and fuel pump turn on normally. After letting
> the jeep sit turned off for about 5-10 minutes, the problem will
> return. Later in the day when it is hot, this almost never happens but
> it does once in a long while, usually after sitting turned off for at
> least a few hours. What could be causing this? What could cause it to
> work fine on the second try?
>
> Thanks
Here is an update: I checked directly at the PCM connector for ground
on all the ground cavities, 0.3 ohms on all three. Checked for 12v on
the cavity that always has 12v from the battery, perfect. Checked if
the PCM gets 12v from the ignition switch as soon as it is turned to
run, perfect. If this problem is due to a bad connection I would say
it has to be in the PCM connector itself or in the PCM itself or the
computer is taking a long time to run its diagnostics as Bill
suggested. Any more ideas? Thanks
10-01-2007, 11:03 AM
#66
Guest
Posts: n/a
Re: Delayed start problem
nrs wrote:
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
10-01-2007, 11:03 AM
#67
Guest
Posts: n/a
Re: Delayed start problem
nrs wrote:
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
10-01-2007, 11:03 AM
#68
Guest
Posts: n/a
Re: Delayed start problem
nrs wrote:
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
10-01-2007, 11:03 AM
#69
Guest
Posts: n/a
Re: Delayed start problem
nrs wrote:
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
> On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
>> nrs wrote:
>>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
>>> it is cool. When the key is turned to run, the check engine light
>>> does not turn on right away. There is a delay of a few seconds and
>>> then the relays in the power distribution box under the hood start to
>>> click rapidly. Once this happens, the fuel pump runs for a short
>>> while and the jeep can be started. It seems like the computer is not
>>> aware right away that the ignition has been turned to run. If I
>>> immediately turn the key to run again (after first returning it to
>>> lock) the check engine and fuel pump turn on normally. After letting
>>> the jeep sit turned off for about 5-10 minutes, the problem will
>>> return. Later in the day when it is hot, this almost never happens but
>>> it does once in a long while, usually after sitting turned off for at
>>> least a few hours. What could be causing this? What could cause it to
>>> work fine on the second try?
>>> Thanks
>> One more thought for you.
>>
>> There is a recall on your emergency brake lever and the ground for the
>> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
>> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
>> done if the wire doesn't get hooked back up. Maybe your ground there is
>> bad?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)- Hide quoted text -
>>
>> - Show quoted text -
>
> The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> seem to have it (but it still worked fine for a long time before this
> problem started).
>
One more idea for you I just remembered.
I have had a bad fuse connection cause a 'no red dash light means no
start' issue on several vehicles over the years. It was corrosion on
the fuse's legs and their socket causing it.
Mike
10-01-2007, 11:18 AM
#70
Guest
Posts: n/a
Re: Delayed start problem
On Oct 1, 10:03 am, Mike Romain <roma...@sympatico.ca> wrote:
> nrs wrote:
> > On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
> >> nrs wrote:
> >>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> >>> it is cool. When the key is turned to run, the check engine light
> >>> does not turn on right away. There is a delay of a few seconds and
> >>> then the relays in the power distribution box under the hood start to
> >>> click rapidly. Once this happens, the fuel pump runs for a short
> >>> while and the jeep can be started. It seems like the computer is not
> >>> aware right away that the ignition has been turned to run. If I
> >>> immediately turn the key to run again (after first returning it to
> >>> lock) the check engine and fuel pump turn on normally. After letting
> >>> the jeep sit turned off for about 5-10 minutes, the problem will
> >>> return. Later in the day when it is hot, this almost never happens but
> >>> it does once in a long while, usually after sitting turned off for at
> >>> least a few hours. What could be causing this? What could cause it to
> >>> work fine on the second try?
> >>> Thanks
> >> One more thought for you.
>
> >> There is a recall on your emergency brake lever and the ground for the
> >> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
> >> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
> >> done if the wire doesn't get hooked back up. Maybe your ground there is
> >> bad?
>
> >> Mike
> >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
> >> Canadian Off Road Trips Photos: Non members can still view!
> >> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> >> (More Off Road album links at bottom of the view page)- Hide quoted text -
>
> >> - Show quoted text -
>
> > The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> > seem to have it (but it still worked fine for a long time before this
> > problem started).
>
> One more idea for you I just remembered.
>
> I have had a bad fuse connection cause a 'no red dash light means no
> start' issue on several vehicles over the years. It was corrosion on
> the fuse's legs and their socket causing it.
>
> Mike- Hide quoted text -
>
> - Show quoted text -
Thanks, I'll check the fuses again. Maybe it's that dome light fuse
that seems to affect much more that what it says it does.
> nrs wrote:
> > On Sep 27, 11:02 am, Mike Romain <roma...@sympatico.ca> wrote:
> >> nrs wrote:
> >>> My '95 2.5 AX5 YJ has a strange problem, usually in the morning when
> >>> it is cool. When the key is turned to run, the check engine light
> >>> does not turn on right away. There is a delay of a few seconds and
> >>> then the relays in the power distribution box under the hood start to
> >>> click rapidly. Once this happens, the fuel pump runs for a short
> >>> while and the jeep can be started. It seems like the computer is not
> >>> aware right away that the ignition has been turned to run. If I
> >>> immediately turn the key to run again (after first returning it to
> >>> lock) the check engine and fuel pump turn on normally. After letting
> >>> the jeep sit turned off for about 5-10 minutes, the problem will
> >>> return. Later in the day when it is hot, this almost never happens but
> >>> it does once in a long while, usually after sitting turned off for at
> >>> least a few hours. What could be causing this? What could cause it to
> >>> work fine on the second try?
> >>> Thanks
> >> One more thought for you.
>
> >> There is a recall on your emergency brake lever and the ground for the
> >> fuel pump bolts onto the frame of this lever on your 95 YJ. There have
> >> been posted 'fuel pump' and 'ECM' 'failures' right after this job is
> >> done if the wire doesn't get hooked back up. Maybe your ground there is
> >> bad?
>
> >> Mike
> >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
> >> Canadian Off Road Trips Photos: Non members can still view!
> >> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> >> (More Off Road album links at bottom of the view page)- Hide quoted text -
>
> >> - Show quoted text -
>
> > The FSM says that not all '95 YJs have this ground wire. Mine doesn't
> > seem to have it (but it still worked fine for a long time before this
> > problem started).
>
> One more idea for you I just remembered.
>
> I have had a bad fuse connection cause a 'no red dash light means no
> start' issue on several vehicles over the years. It was corrosion on
> the fuse's legs and their socket causing it.
>
> Mike- Hide quoted text -
>
> - Show quoted text -
Thanks, I'll check the fuses again. Maybe it's that dome light fuse
that seems to affect much more that what it says it does.