1993 Jeep Grand Cherokee No start

Tiny
SDIXONCHRIS
  • MEMBER
  • 1993 JEEP GRAND CHEROKEE
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
Ok. I was drivjng. Jeep was running great. Then died. Had it towed home. Checked saw we have spark. Coil is good. We have fuel at the rail. And timing marks line up. And we have great compression. No cel light.. We changed coil. Cap and button. Wires and plugs. We also tried starting fluid in the tb and still nothing so we no its not a fuel problem. Could it be the crank or cam sensor if we have spark. We are all lost. We were told if we have spark then it's not the cam or crank sensor. Is this true.
Tuesday, May 27th, 2014 AT 7:52 PM

15 Replies

Tiny
TY ANDERSON
  • MECHANIC
  • 719 POSTS
Ok. I was drivjng. Jeep was running great. Then died. Had it towed home. Checked saw we have spark. Coil is good. We have fuel at the rail. And timing marks line up. And we have great compression. No cel light. We changed coil. Cap and button. Wires and plugs. We also tried starting fluid in the tb and still nothing so we no its not a fuel problem. Could it be the crank or cam sensor if we have spark. We are all lost. We were told if we have spark then it's not the cam or crank sensor. Is this true.

Yes, if the crank sensor has failed then there would be no spark.
Is there an aftermarket alarm system installed in the vehicle?
When the engine died did is stumble and stall or did the engine suddenly stop?
How did you check the timing marks?
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Tuesday, May 27th, 2014 AT 8:08 PM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
I checked the marks by taking off the timing cover. No aftermarket alarm. So there's no way I could be the crank sensor with spark huh. I'm lost for words. I dont know what else to check.
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Tuesday, May 27th, 2014 AT 8:40 PM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
When it died I was pulling off from a stop light and it kinda back fired and just cutbout. Then I rolled to a stop. I could see the mph Guage just going down till I stoped. I think I may be the computer.
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Tuesday, May 27th, 2014 AT 8:43 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Do as I said in my message and get back with us
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Tuesday, May 27th, 2014 AT 8:55 PM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
We will try that now
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Tuesday, May 27th, 2014 AT 9:07 PM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
Lucky we had the timing cover and valve cover off. My friend heard of this as I read it to him so he knew what you were talking about. Everything is still the same. OTHER THAN WE GOT OIL EVERYTHING BUT earlier tonight we did do a compression check and the lowest cylinder 3 was 110. The engine is reman from chrysler. It wants to start. Is it possible the crank sensor is not telling the ecm when to fire at the right time and pulse injectors at the right time also
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Tuesday, May 27th, 2014 AT 9:16 PM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
Idk if it will help but when I turn the key to on. The cel don't on come on at all.
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Tuesday, May 27th, 2014 AT 9:25 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Ck. The pcm and injector fuses for voltage
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Tuesday, May 27th, 2014 AT 9:48 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
The cel light should be on. U need to replace the bulb to see if it works! U need to test for codes but u will need the unit to ck. The codes. They will do it at the parts store. But I know how do I get it their?Ck. U maybe able to rent one.
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Wednesday, May 28th, 2014 AT 7:40 AM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
They can't check obd 1. They say count the flash but the check engine light has never been on. Ever. But I will check that when we get home today.
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Wednesday, May 28th, 2014 AT 8:07 AM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
It want ever start with staring fluid either. I think it may be the crank senor is out or shorted. It do have spark. It may just not be enough spark and the plugs are wet. I think it mah be cross firing as a mechanic said. 2 different garages got tired and said they can't fix it.
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Wednesday, May 28th, 2014 AT 8:10 AM
Tiny
CADIEMAN
  • MECHANIC
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U will have to get the cell light working!
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Wednesday, May 28th, 2014 AT 8:24 AM
Tiny
CADIEMAN
  • MECHANIC
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Please stop taking things apart ad throwing parts at it!
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Wednesday, May 28th, 2014 AT 8:28 AM
Tiny
SDIXONCHRIS
  • MEMBER
  • 8 POSTS
The stuff I'm replacing is still under warranty so. It's not hurting me. What else can I do. Can I test to see if spark and injectors are working at the right time.
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Wednesday, May 28th, 2014 AT 8:57 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Replace the cell light bulb!
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Wednesday, May 28th, 2014 AT 6:33 PM

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