YJ No Spark
02-08-2005, 06:17 PM
#21
Guest
Posts: n/a
Re: YJ No Spark
On Tue, 8 Feb 2005 19:39:12 UTC "Brandy Wood" <b-wood11NOSPAM@ti.com>
wrote:
With a bad timing chain, it's still gonna spark - just not where it
should. Crank Position Sensor would be #1 suspect, Cam Position
Sensor (inside the distributor) is a possibility as is a bad coil -
but the Crank sensor is more common.
> it also could be the timing chain.
> "Dave Lee" <daveleejd@***.net> wrote in message
> news:h17Od.29792$2p.16706@lakeread08...
> > ok people, it's a 95 YJ, 4 cyl., 5 speed.
> > No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
> > coil.
> > No spark. When I had my wife crank the engine I noticed a spark from the
> > starter, or thereabouts down there.
> >
> > Any ideas?
> >
> >
>
>
--
Will Honea
wrote:
With a bad timing chain, it's still gonna spark - just not where it
should. Crank Position Sensor would be #1 suspect, Cam Position
Sensor (inside the distributor) is a possibility as is a bad coil -
but the Crank sensor is more common.
> it also could be the timing chain.
> "Dave Lee" <daveleejd@***.net> wrote in message
> news:h17Od.29792$2p.16706@lakeread08...
> > ok people, it's a 95 YJ, 4 cyl., 5 speed.
> > No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
> > coil.
> > No spark. When I had my wife crank the engine I noticed a spark from the
> > starter, or thereabouts down there.
> >
> > Any ideas?
> >
> >
>
>
--
Will Honea
02-08-2005, 06:17 PM
#22
Guest
Posts: n/a
Re: YJ No Spark
On Tue, 8 Feb 2005 19:39:12 UTC "Brandy Wood" <b-wood11NOSPAM@ti.com>
wrote:
With a bad timing chain, it's still gonna spark - just not where it
should. Crank Position Sensor would be #1 suspect, Cam Position
Sensor (inside the distributor) is a possibility as is a bad coil -
but the Crank sensor is more common.
> it also could be the timing chain.
> "Dave Lee" <daveleejd@***.net> wrote in message
> news:h17Od.29792$2p.16706@lakeread08...
> > ok people, it's a 95 YJ, 4 cyl., 5 speed.
> > No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
> > coil.
> > No spark. When I had my wife crank the engine I noticed a spark from the
> > starter, or thereabouts down there.
> >
> > Any ideas?
> >
> >
>
>
--
Will Honea
wrote:
With a bad timing chain, it's still gonna spark - just not where it
should. Crank Position Sensor would be #1 suspect, Cam Position
Sensor (inside the distributor) is a possibility as is a bad coil -
but the Crank sensor is more common.
> it also could be the timing chain.
> "Dave Lee" <daveleejd@***.net> wrote in message
> news:h17Od.29792$2p.16706@lakeread08...
> > ok people, it's a 95 YJ, 4 cyl., 5 speed.
> > No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
> > coil.
> > No spark. When I had my wife crank the engine I noticed a spark from the
> > starter, or thereabouts down there.
> >
> > Any ideas?
> >
> >
>
>
--
Will Honea
02-08-2005, 07:36 PM
#23
Guest
Posts: n/a
Re: YJ No Spark
No spark at plug, nor coil. Rotor in place, brand new distributor and
connected. Funny, after a while I did open the cap up just to double check
the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
sensor. Any idea why I see a spark at the starter? My wife hits the ignition
and 2 out of 3 times I see a quick little spark down there.
"DougW" <post.replies@invalid.address> wrote in message
news:HFbOd.7462$Ps.1339@okepread06...
> Dave Lee did pass the time by typing:
>> ok people, it's a 95 YJ, 4 cyl., 5 speed.
>> No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>> coil.
>> No spark. When I had my wife crank the engine I noticed a spark from the
>> starter, or thereabouts down there.
>>
>> Any ideas?
>
> Start simple.
>
> Spark from the coil? Hold the coil lead by the block and see if
> it draws a spark when you turn the engine.
>
> Double check you put the rotor in there. :)
> And the camshaft position sensor pickup on the distributor is hooked back
> up.
>
>
> And the plugs are going to the proper post.
>
> --
> DougW
>
>
connected. Funny, after a while I did open the cap up just to double check
the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
sensor. Any idea why I see a spark at the starter? My wife hits the ignition
and 2 out of 3 times I see a quick little spark down there.
"DougW" <post.replies@invalid.address> wrote in message
news:HFbOd.7462$Ps.1339@okepread06...
> Dave Lee did pass the time by typing:
>> ok people, it's a 95 YJ, 4 cyl., 5 speed.
>> No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>> coil.
>> No spark. When I had my wife crank the engine I noticed a spark from the
>> starter, or thereabouts down there.
>>
>> Any ideas?
>
> Start simple.
>
> Spark from the coil? Hold the coil lead by the block and see if
> it draws a spark when you turn the engine.
>
> Double check you put the rotor in there. :)
> And the camshaft position sensor pickup on the distributor is hooked back
> up.
>
>
> And the plugs are going to the proper post.
>
> --
> DougW
>
>
02-08-2005, 07:36 PM
#24
Guest
Posts: n/a
Re: YJ No Spark
No spark at plug, nor coil. Rotor in place, brand new distributor and
connected. Funny, after a while I did open the cap up just to double check
the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
sensor. Any idea why I see a spark at the starter? My wife hits the ignition
and 2 out of 3 times I see a quick little spark down there.
"DougW" <post.replies@invalid.address> wrote in message
news:HFbOd.7462$Ps.1339@okepread06...
> Dave Lee did pass the time by typing:
>> ok people, it's a 95 YJ, 4 cyl., 5 speed.
>> No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>> coil.
>> No spark. When I had my wife crank the engine I noticed a spark from the
>> starter, or thereabouts down there.
>>
>> Any ideas?
>
> Start simple.
>
> Spark from the coil? Hold the coil lead by the block and see if
> it draws a spark when you turn the engine.
>
> Double check you put the rotor in there. :)
> And the camshaft position sensor pickup on the distributor is hooked back
> up.
>
>
> And the plugs are going to the proper post.
>
> --
> DougW
>
>
connected. Funny, after a while I did open the cap up just to double check
the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
sensor. Any idea why I see a spark at the starter? My wife hits the ignition
and 2 out of 3 times I see a quick little spark down there.
"DougW" <post.replies@invalid.address> wrote in message
news:HFbOd.7462$Ps.1339@okepread06...
> Dave Lee did pass the time by typing:
>> ok people, it's a 95 YJ, 4 cyl., 5 speed.
>> No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>> coil.
>> No spark. When I had my wife crank the engine I noticed a spark from the
>> starter, or thereabouts down there.
>>
>> Any ideas?
>
> Start simple.
>
> Spark from the coil? Hold the coil lead by the block and see if
> it draws a spark when you turn the engine.
>
> Double check you put the rotor in there. :)
> And the camshaft position sensor pickup on the distributor is hooked back
> up.
>
>
> And the plugs are going to the proper post.
>
> --
> DougW
>
>
02-08-2005, 07:36 PM
#25
Guest
Posts: n/a
Re: YJ No Spark
No spark at plug, nor coil. Rotor in place, brand new distributor and
connected. Funny, after a while I did open the cap up just to double check
the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
sensor. Any idea why I see a spark at the starter? My wife hits the ignition
and 2 out of 3 times I see a quick little spark down there.
"DougW" <post.replies@invalid.address> wrote in message
news:HFbOd.7462$Ps.1339@okepread06...
> Dave Lee did pass the time by typing:
>> ok people, it's a 95 YJ, 4 cyl., 5 speed.
>> No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>> coil.
>> No spark. When I had my wife crank the engine I noticed a spark from the
>> starter, or thereabouts down there.
>>
>> Any ideas?
>
> Start simple.
>
> Spark from the coil? Hold the coil lead by the block and see if
> it draws a spark when you turn the engine.
>
> Double check you put the rotor in there. :)
> And the camshaft position sensor pickup on the distributor is hooked back
> up.
>
>
> And the plugs are going to the proper post.
>
> --
> DougW
>
>
connected. Funny, after a while I did open the cap up just to double check
the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
sensor. Any idea why I see a spark at the starter? My wife hits the ignition
and 2 out of 3 times I see a quick little spark down there.
"DougW" <post.replies@invalid.address> wrote in message
news:HFbOd.7462$Ps.1339@okepread06...
> Dave Lee did pass the time by typing:
>> ok people, it's a 95 YJ, 4 cyl., 5 speed.
>> No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>> coil.
>> No spark. When I had my wife crank the engine I noticed a spark from the
>> starter, or thereabouts down there.
>>
>> Any ideas?
>
> Start simple.
>
> Spark from the coil? Hold the coil lead by the block and see if
> it draws a spark when you turn the engine.
>
> Double check you put the rotor in there. :)
> And the camshaft position sensor pickup on the distributor is hooked back
> up.
>
>
> And the plugs are going to the proper post.
>
> --
> DougW
>
>
02-08-2005, 07:46 PM
#26
Guest
Posts: n/a
Re: YJ No Spark
Dave Lee did pass the time by typing:
> No spark at plug, nor coil. Rotor in place, brand new distributor and
> connected. Funny, after a while I did open the cap up just to double check
> the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
> sensor. Any idea why I see a spark at the starter? My wife hits the ignition
> and 2 out of 3 times I see a quick little spark down there.
Your seeing the solinoid close, it's basically a big *** relay and will spark.
Could be the coil. but before going there, double check the harnesses around
where you were working. Sometimes things come loose.
You can take a noid light (12V lamp) or multimeter and measure across the coil
primary (small side) while starting the engine. You should see 12V pulses
If you do then the coil is shot.
--
DougW
> No spark at plug, nor coil. Rotor in place, brand new distributor and
> connected. Funny, after a while I did open the cap up just to double check
> the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
> sensor. Any idea why I see a spark at the starter? My wife hits the ignition
> and 2 out of 3 times I see a quick little spark down there.
Your seeing the solinoid close, it's basically a big *** relay and will spark.
Could be the coil. but before going there, double check the harnesses around
where you were working. Sometimes things come loose.
You can take a noid light (12V lamp) or multimeter and measure across the coil
primary (small side) while starting the engine. You should see 12V pulses
If you do then the coil is shot.
--
DougW
02-08-2005, 07:46 PM
#27
Guest
Posts: n/a
Re: YJ No Spark
Dave Lee did pass the time by typing:
> No spark at plug, nor coil. Rotor in place, brand new distributor and
> connected. Funny, after a while I did open the cap up just to double check
> the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
> sensor. Any idea why I see a spark at the starter? My wife hits the ignition
> and 2 out of 3 times I see a quick little spark down there.
Your seeing the solinoid close, it's basically a big *** relay and will spark.
Could be the coil. but before going there, double check the harnesses around
where you were working. Sometimes things come loose.
You can take a noid light (12V lamp) or multimeter and measure across the coil
primary (small side) while starting the engine. You should see 12V pulses
If you do then the coil is shot.
--
DougW
> No spark at plug, nor coil. Rotor in place, brand new distributor and
> connected. Funny, after a while I did open the cap up just to double check
> the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
> sensor. Any idea why I see a spark at the starter? My wife hits the ignition
> and 2 out of 3 times I see a quick little spark down there.
Your seeing the solinoid close, it's basically a big *** relay and will spark.
Could be the coil. but before going there, double check the harnesses around
where you were working. Sometimes things come loose.
You can take a noid light (12V lamp) or multimeter and measure across the coil
primary (small side) while starting the engine. You should see 12V pulses
If you do then the coil is shot.
--
DougW
02-08-2005, 07:46 PM
#28
Guest
Posts: n/a
Re: YJ No Spark
Dave Lee did pass the time by typing:
> No spark at plug, nor coil. Rotor in place, brand new distributor and
> connected. Funny, after a while I did open the cap up just to double check
> the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
> sensor. Any idea why I see a spark at the starter? My wife hits the ignition
> and 2 out of 3 times I see a quick little spark down there.
Your seeing the solinoid close, it's basically a big *** relay and will spark.
Could be the coil. but before going there, double check the harnesses around
where you were working. Sometimes things come loose.
You can take a noid light (12V lamp) or multimeter and measure across the coil
primary (small side) while starting the engine. You should see 12V pulses
If you do then the coil is shot.
--
DougW
> No spark at plug, nor coil. Rotor in place, brand new distributor and
> connected. Funny, after a while I did open the cap up just to double check
> the rotor. You never know. Well, hopefully tomorrow I will attempt the crank
> sensor. Any idea why I see a spark at the starter? My wife hits the ignition
> and 2 out of 3 times I see a quick little spark down there.
Your seeing the solinoid close, it's basically a big *** relay and will spark.
Could be the coil. but before going there, double check the harnesses around
where you were working. Sometimes things come loose.
You can take a noid light (12V lamp) or multimeter and measure across the coil
primary (small side) while starting the engine. You should see 12V pulses
If you do then the coil is shot.
--
DougW
02-09-2005, 02:34 AM
#29
Guest
Posts: n/a
Re: YJ No Spark
In message <Zt9Od.8377$Tt.943@fed1read05>, "Jerry Bransford" wrote:
>Nope, the CPS doesn't have any current flowing through it unless the
>engine is running... and then that current is self-generated. :)
The crank sensor operates on voltage that is supplied by the PCM anytime the key
is on, running or not, and does not generate current.
>
>Jerry
>
>Dave Lee wrote:
>> Interesting. Now, I was having trouble before it died, and one morning I
>> went to the jeep and found the key in the on position, heater fan blowing.
>> Would juice through the ignition wires overnight hasten its demise??
>> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
>> news:420911CF.57916359@***.net...
>>
>>> Ninety nine percent of the time that'll be the Crankcase Position
>>>Sensor:
>>>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>>> God Bless America, ßill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>Dave Lee wrote:
>>>
>>>>ok people, it's a 95 YJ, 4 cyl., 5 speed.
>>>>No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>>>>coil.
>>>>No spark. When I had my wife crank the engine I noticed a spark from the
>>>>starter, or thereabouts down there.
>>>>
>>>>Any ideas?
>>>
>>
>>
>Nope, the CPS doesn't have any current flowing through it unless the
>engine is running... and then that current is self-generated. :)
The crank sensor operates on voltage that is supplied by the PCM anytime the key
is on, running or not, and does not generate current.
>
>Jerry
>
>Dave Lee wrote:
>> Interesting. Now, I was having trouble before it died, and one morning I
>> went to the jeep and found the key in the on position, heater fan blowing.
>> Would juice through the ignition wires overnight hasten its demise??
>> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
>> news:420911CF.57916359@***.net...
>>
>>> Ninety nine percent of the time that'll be the Crankcase Position
>>>Sensor:
>>>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>>> God Bless America, ßill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>Dave Lee wrote:
>>>
>>>>ok people, it's a 95 YJ, 4 cyl., 5 speed.
>>>>No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>>>>coil.
>>>>No spark. When I had my wife crank the engine I noticed a spark from the
>>>>starter, or thereabouts down there.
>>>>
>>>>Any ideas?
>>>
>>
>>
02-09-2005, 02:34 AM
#30
Guest
Posts: n/a
Re: YJ No Spark
In message <Zt9Od.8377$Tt.943@fed1read05>, "Jerry Bransford" wrote:
>Nope, the CPS doesn't have any current flowing through it unless the
>engine is running... and then that current is self-generated. :)
The crank sensor operates on voltage that is supplied by the PCM anytime the key
is on, running or not, and does not generate current.
>
>Jerry
>
>Dave Lee wrote:
>> Interesting. Now, I was having trouble before it died, and one morning I
>> went to the jeep and found the key in the on position, heater fan blowing.
>> Would juice through the ignition wires overnight hasten its demise??
>> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
>> news:420911CF.57916359@***.net...
>>
>>> Ninety nine percent of the time that'll be the Crankcase Position
>>>Sensor:
>>>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>>> God Bless America, ßill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>Dave Lee wrote:
>>>
>>>>ok people, it's a 95 YJ, 4 cyl., 5 speed.
>>>>No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>>>>coil.
>>>>No spark. When I had my wife crank the engine I noticed a spark from the
>>>>starter, or thereabouts down there.
>>>>
>>>>Any ideas?
>>>
>>
>>
>Nope, the CPS doesn't have any current flowing through it unless the
>engine is running... and then that current is self-generated. :)
The crank sensor operates on voltage that is supplied by the PCM anytime the key
is on, running or not, and does not generate current.
>
>Jerry
>
>Dave Lee wrote:
>> Interesting. Now, I was having trouble before it died, and one morning I
>> went to the jeep and found the key in the on position, heater fan blowing.
>> Would juice through the ignition wires overnight hasten its demise??
>> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
>> news:420911CF.57916359@***.net...
>>
>>> Ninety nine percent of the time that'll be the Crankcase Position
>>>Sensor:
>>>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>>> God Bless America, ßill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>Dave Lee wrote:
>>>
>>>>ok people, it's a 95 YJ, 4 cyl., 5 speed.
>>>>No spark. I replaced the distributor, the cap & rotor, wires, plugs, and
>>>>coil.
>>>>No spark. When I had my wife crank the engine I noticed a spark from the
>>>>starter, or thereabouts down there.
>>>>
>>>>Any ideas?
>>>
>>
>>