Engine will not start?

Tiny
ADHJEEP
  • MEMBER
Ibanezjeepguy, the dark green wire at the coil comes from the ASD, in fact it is all part of the same circuit that provides 12 volts to the fuel injectors, so when you jumped the coil wire you are also providing 12 volts to the fuel injectors, all the time etc comes from the PCM by turning on and off the grounds to the injectors and coil. I suspect the ASD, or the same problem I had with the wire from Fuse 6. Check the continuity from fuse 6 to the contact side of the ASD, I would disconnect the battery negative first. If you get continuity, then check for 12 volts at the ASD side with the battery negative disconnected. Just put the meter common on the battery negative and the red lead on the ASD contact coming from Fuse 6. If you get 12 volts I would suspect the ASD relay, if you don't start unwrapping the bundle of wires between the battery and the fender.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
FRANKTB
  • MEMBER
  • 1997 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • MANUAL
  • 65,000 MILES
After starting and driving 20 or 30 minutes then turing off engine for short pefriod then try to restart will not start but will after about 2 hours
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
JAMES W.
  • MEMBER
We need to try to narrow it down a little. When the "no start" condition exists, what are you missing? Spark, fuel pressure, injector pulse or any combination of the three? Please advise.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
  • 1997 JEEP WRANGLER
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
Hello. I am having a problem getting my 1997 Wrangler SE 2.5L to start. It cranks fine, but there is no injector pulse and no spark. The ground and 5V ref are both good to the crank sensor. Any thoughts? Thanks.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Do you have power to the coil and also did you check the camshaft position sensor in the distributor-This sensor is also used to synchronize the injectors.

Do you have power at the dark green and black wire on the injector harness.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
I haven't checked the cam position sensor. You say it's in the distributor? I read that it was mounted on the front of the intake manifold. There is power going into the coil. I haven't checked for power at the harness of the injector. The scanner also reported no RPMs on crank.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
This is 2.5L correct see below


https://www.2carpros.com/forum/automotive_pictures/12900_cam_3.jpg

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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
Also, one more thing I forgot to add. I checked the repair manual that I have and it says that they didn't use the camshaft position sensor until 2000. So, if the manual is wrong and you are right PLEASE help me locate the sensor. I'm not questioning you, I just don't know where I'd find it. Thanks!
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Check underneath the rotor button not there check on the upper and rear/back edge of the flywheel cover on the driver's side. 2 bolts holds it in
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
Ok, I think I found. Is that the sensor that sits directly below the rotor on the distributor? I was confused because when I bought the part it was referred to just as an ignition module. It is brand new. Am I looking for power into it?
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
There is one more piece of info that I'm not sure if it is relevant or not: when you put the vehicle into neutral it will crank. It will only crank in drive and neutral. I'm not sure if that means anything.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Cranks on drive and neutral it shouldn't start at drive-have the park and neutral switch. Checked out

Do you have injection pulses and spark?
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
I apologize, I made a typo. It cranks in PARK and neutral, not drive. There is no injector pulse or spark at all.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Test the auto shut down relay and get back
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
Relay itself is fine. But there is no power coming from it.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Check fuse no.6 30amp and test for power at B1 and B3 at ASD relay see below


https://www.2carpros.com/forum/automotive_pictures/12900_asd_2.jpg

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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
I checked the fuse, checks out OK. I checked B3, there was constant power. I checked B1, there was almost 11V when cranking.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Turn key on and check for power at the injector/s dark green and black wire-Do you have it? If not retest the ASD relay the injectors gets its power from the ASD relay
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
LIMPPEACE29
  • MEMBER
I checked the power like you said, there is nothing there. Also, the ASD relay appears to be in working condition still.
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Turn key to run at the ASD relay socket relay removed jumper B3 to B2 and recheck for power at the injector wire -do you have it-
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Thursday, September 24th, 2020 AT 6:20 PM (Merged)

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