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Ask cardoctor 69 Your Own Question
cardoctor 69
cardoctor 69, ASE Certified Technician
Category: Jeep
Satisfied Customers: 25920
Experience:  ase master technician qualified on all makes and models
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I would like to get your assistance, 98 Jeep Grand Cherooke,

Customer Question

Hello Pearl, i would like to get your assistance
JA: What is the make/model/year of your car?
Customer: 98 Jeep Grand Cherooke
JA: What year is your Grand Cherokee?
Customer: 4.0 6 in line
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I have connected a DTC and it was showing Ignition Coil 1 fail, then after was showing No power train DTCs or Freeze Frame Data is presently stored in the vehicle computer
JA: Is the power loss consistent, or does it fluctuate?
Customer: that what it shows now and of course it does not start the vehicle
JA: Anything else you think the mechanic should know?
Customer: By the way I erased the code set by mistake, how do I have it back?
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mechanic about your situation and then connect you two.
Submitted: 3 months ago.
Category: Jeep
Expert:  cardoctor 69 replied 3 months ago.

OK the vehicle will not start now correct? Was there any work done prior to the issue ?

Customer: replied 3 months ago.
Just replace the ECU ECM PCM computer 6 months ago, and the ignition coil as well
Expert:  cardoctor 69 replied 3 months ago.

Ok did this start after replacing the ECU ? Also does the vehicle crank over at all now?

Customer: replied 3 months ago.
it did by the way, and was working OK, just this morning did crank up but failed to start engine
Expert:  cardoctor 69 replied 3 months ago.

Ok did you have your old keys programmed to the new ECU?

Customer: replied 3 months ago.
SEC - NSIs this what you need?
Expert:  cardoctor 69 replied 3 months ago.

Yes but did they actually use a scanner to program the keys to the vehicle ? Also try disconnecting the battery with the key on the on position and see if it makes an difference and see if it starts thanks.

Customer: replied 3 months ago.
No, it does'nt start showing the same
Expert:  cardoctor 69 replied 3 months ago.

OK sounds like there is an issue possibly with the crank sensor do you know the number code for the engine light?

Customer: replied 3 months ago.
Expert:  cardoctor 69 replied 3 months ago.

Ok are you able to check the crank sensor yourself ?

Customer: replied 3 months ago.
I can do it
Expert:  cardoctor 69 replied 3 months ago.

This link will help. Let me know how it checks out.

Customer: replied 3 months ago.
Expert:  cardoctor 69 replied 3 months ago.

No problem. Please rate excellent service.