Re: 95 yj starting problem
 

nrs wrote:

> Maybe I didn't describe the problem very well. The engine doesn't
> start on the first try when this happens, just the starter motor
> starts to work for an instant and then cuts off. Its like power to
> the starter is getting cut off. On the second try the starter motor
> turns the engine and engine fires right up and has no problems once it
> is running. The idle is just about perfect too.

Ah..ok.

Might give this a try.

Turn the key to on, but don't start.
Wait a few seconds, turn the key off.
Then start the engine.

If this works then the problem is in the fuel pressure regulator
or fuel pump check valve.

--
DougW

Re: 95 yj starting problem
 

nrs wrote:

> Maybe I didn't describe the problem very well. The engine doesn't
> start on the first try when this happens, just the starter motor
> starts to work for an instant and then cuts off. Its like power to
> the starter is getting cut off. On the second try the starter motor
> turns the engine and engine fires right up and has no problems once it
> is running. The idle is just about perfect too.

Ah..ok.

Might give this a try.

Turn the key to on, but don't start.
Wait a few seconds, turn the key off.
Then start the engine.

If this works then the problem is in the fuel pressure regulator
or fuel pump check valve.

--
DougW

Re: 95 yj starting problem
 

nrs wrote:

> Maybe I didn't describe the problem very well. The engine doesn't
> start on the first try when this happens, just the starter motor
> starts to work for an instant and then cuts off. Its like power to
> the starter is getting cut off. On the second try the starter motor
> turns the engine and engine fires right up and has no problems once it
> is running. The idle is just about perfect too.

Ah..ok.

Might give this a try.

Turn the key to on, but don't start.
Wait a few seconds, turn the key off.
Then start the engine.

If this works then the problem is in the fuel pressure regulator
or fuel pump check valve.

--
DougW

Re: 95 yj starting problem
 

DougW wrote:
> nrs wrote:
>
>> Maybe I didn't describe the problem very well. The engine doesn't
>> start on the first try when this happens, just the starter motor
>> starts to work for an instant and then cuts off. Its like power to
>> the starter is getting cut off. On the second try the starter motor
>> turns the engine and engine fires right up and has no problems once it
>> is running. The idle is just about perfect too.
>
> Ah..ok.
>
> Might give this a try.
>
> Turn the key to on, but don't start.
> Wait a few seconds, turn the key off.
> Then start the engine.
>
> If this works then the problem is in the fuel pressure regulator
> or fuel pump check valve.
>

He is describing a bad main power connection.

The 'starter' stops turning!

On the older ones this was usually just a dirty connection at the
starter relay or solenoid or just a main battery cable end loose or dirty.

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/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 95 yj starting problem
 

DougW wrote:
> nrs wrote:
>
>> Maybe I didn't describe the problem very well. The engine doesn't
>> start on the first try when this happens, just the starter motor
>> starts to work for an instant and then cuts off. Its like power to
>> the starter is getting cut off. On the second try the starter motor
>> turns the engine and engine fires right up and has no problems once it
>> is running. The idle is just about perfect too.
>
> Ah..ok.
>
> Might give this a try.
>
> Turn the key to on, but don't start.
> Wait a few seconds, turn the key off.
> Then start the engine.
>
> If this works then the problem is in the fuel pressure regulator
> or fuel pump check valve.
>

He is describing a bad main power connection.

The 'starter' stops turning!

On the older ones this was usually just a dirty connection at the
starter relay or solenoid or just a main battery cable end loose or dirty.

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/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 95 yj starting problem
 

DougW wrote:
> nrs wrote:
>
>> Maybe I didn't describe the problem very well. The engine doesn't
>> start on the first try when this happens, just the starter motor
>> starts to work for an instant and then cuts off. Its like power to
>> the starter is getting cut off. On the second try the starter motor
>> turns the engine and engine fires right up and has no problems once it
>> is running. The idle is just about perfect too.
>
> Ah..ok.
>
> Might give this a try.
>
> Turn the key to on, but don't start.
> Wait a few seconds, turn the key off.
> Then start the engine.
>
> If this works then the problem is in the fuel pressure regulator
> or fuel pump check valve.
>

He is describing a bad main power connection.

The 'starter' stops turning!

On the older ones this was usually just a dirty connection at the
starter relay or solenoid or just a main battery cable end loose or dirty.

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/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 95 yj starting problem
 

DougW wrote:
> nrs wrote:
>
>> Maybe I didn't describe the problem very well. The engine doesn't
>> start on the first try when this happens, just the starter motor
>> starts to work for an instant and then cuts off. Its like power to
>> the starter is getting cut off. On the second try the starter motor
>> turns the engine and engine fires right up and has no problems once it
>> is running. The idle is just about perfect too.
>
> Ah..ok.
>
> Might give this a try.
>
> Turn the key to on, but don't start.
> Wait a few seconds, turn the key off.
> Then start the engine.
>
> If this works then the problem is in the fuel pressure regulator
> or fuel pump check valve.
>

He is describing a bad main power connection.

The 'starter' stops turning!

On the older ones this was usually just a dirty connection at the
starter relay or solenoid or just a main battery cable end loose or dirty.

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/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 95 yj starting problem
 

On Jun 19, 9:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 YJ (2.5 engine) started having this problem just yesterday. I
> turn the key and the starter starts to run for an instant then it cuts
> off and nothing moves and makes no noise. I turn the key to off and
> immediatly to start again and it fires right up and runs fine. It has
> not (yet) happened on any first start of the day, just later starts.
> On the first start, I usually let the fuel pump run until I hear the
> relay click it off and then start the jeep. On later starts I usually
> just start directly without waiting for the click.
>
> Classical CPS problem?
>
> Thanks in advance.

After running the jeep for longer distances the problem has
disappeared leading me to believe it was a weak battery as had been
suggested. I'll be cleaning the cables next weekend just to make
sure. Thanks to everyone for the help.

Re: 95 yj starting problem
 

On Jun 19, 9:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 YJ (2.5 engine) started having this problem just yesterday. I
> turn the key and the starter starts to run for an instant then it cuts
> off and nothing moves and makes no noise. I turn the key to off and
> immediatly to start again and it fires right up and runs fine. It has
> not (yet) happened on any first start of the day, just later starts.
> On the first start, I usually let the fuel pump run until I hear the
> relay click it off and then start the jeep. On later starts I usually
> just start directly without waiting for the click.
>
> Classical CPS problem?
>
> Thanks in advance.

After running the jeep for longer distances the problem has
disappeared leading me to believe it was a weak battery as had been
suggested. I'll be cleaning the cables next weekend just to make
sure. Thanks to everyone for the help.

Re: 95 yj starting problem
 

On Jun 19, 9:21 am, nrs <neale...@yahoo.com> wrote:
> My '95 YJ (2.5 engine) started having this problem just yesterday. I
> turn the key and the starter starts to run for an instant then it cuts
> off and nothing moves and makes no noise. I turn the key to off and
> immediatly to start again and it fires right up and runs fine. It has
> not (yet) happened on any first start of the day, just later starts.
> On the first start, I usually let the fuel pump run until I hear the
> relay click it off and then start the jeep. On later starts I usually
> just start directly without waiting for the click.
>
> Classical CPS problem?
>
> Thanks in advance.

After running the jeep for longer distances the problem has
disappeared leading me to believe it was a weak battery as had been
suggested. I'll be cleaning the cables next weekend just to make
sure. Thanks to everyone for the help.