Help with Jeep in Greenville NC

snakester14

Active Member
Joined
Nov 3, 2006
Location
Greenville
I was wheeling my Jeep the other day and all of the sudden it just died. We messed with it on the trail and it wasn't getting any spark.

When we got it back to the house we noticed the front 02 sensor wires were all torn. I think it could have shorted something out. But I have no electrical back ground so not to sure where to start looking.

Me and a few buddys replaced CPS and coil. The plugs and wires have less than 1k on them.

All pay for someones gas or give them a case or w/e if you think you could be of some help.

Thanks,
Jake
 
Take it to Austin at University Auto Care. He has a 4x4 background and is fair on prices.

I don't know electrical either, so I can't help...
 
I would say that i would help but i dont really know that much about electrical other than messing with it sucks. Does anything come on when you turn the key?
 
Just a guess but I had a similar problem and it ended up being the ignition.Just for the heck of it check the connection from steering column harness to (for lack of correct terms-Where it plugs in)I could just bump mine or wiggle it around and all was well.Also I had a chevy 1500 just die all of the sudden and it was the pickup? on the distributor...I duno,good luck
 
I still need to put a new o2 sensor in but i did splice up the old one and it still didn't crank.

Visually checked all fuses and they looked good.

TPS tested fine

Has electrical power, it gets real close to starting just doesn't.

All try and pick up an o2 sensor tomorrow and go from their.

Anything else I should check?

thanks,
Jake
 
how much water you go through?
any chance it is hydrolcokded?
pull a plug and see
getting spark?
getting fuel?
 
bad O2 sensors shouldn't keep it from getting spark. without knowing more or looking at it, sounds like a coil problem if there isn't any spark and it turns over
 
rockcity said:
bad O2 sensors shouldn't keep it from getting spark. without knowing more or looking at it, sounds like a coil problem if there isn't any spark and it turns over
Click to expand...

I didn't go through any water really and when it shut off it shut off on dry ground.

We tested the coil and didn't get spark at the coil itself. I had an extra coil at home from my old engine which I'm pretty sure works and we threw that on it and didn't get spark at the coil.

And I do have fuel at the rail.
 
One other thing to add before this all happened is I was having a miss fire in cylinders 2 and 3 so i changed the plugs and wires and this did absolutely about the misfire.

Could this be signs of the ignition coil going out?

thanks,
Jake
 
it cranks ( turns over) but gets no spark, correct?


You stated you have already replaced the CPS and the coil ( i assume ignition) .

1)use a test light or meter to verify that you are getting power to the coil input wires.

-If you have power there, then something isn't telling the computer when to spark. pull the distributor cap and verify that the rotor is spinning when you crank it. BTW, replace the cap & rotor while doing this if you havent already. (CPS or PCM are the only other things it could be that i can think of off the top of my head)

-If you don't have power at the coil leads, it could be a bad relay or fusible link upstream of the coil.



Engine trouble shooting is relatively easy;
*first you need fuel, fire, and air, ( figure out which you have and then go from there as you start troubleshooting)
*second you need them at the proper time/ in the proper sequence. (unless your are 180 degrees off the timing, you will usually at least get a sputter or backfire if you have all 3 and just at the incorrect time)
 
ecu88xj said:
it cranks ( turns over) but gets no spark, correct?
You stated you have already replaced the CPS and the coil ( i assume ignition) .
1)use a test light or meter to verify that you are getting power to the coil input wires.
-If you have power there, then something isn't telling the computer when to spark. pull the distributor cap and verify that the rotor is spinning when you crank it. BTW, replace the cap & rotor while doing this if you havent already. (CPS or PCM are the only other things it could be that i can think of off the top of my head)
-If you don't have power at the coil leads, it could be a bad relay or fusible link upstream of the coil.
Engine trouble shooting is relatively easy;
*first you need fuel, fire, and air, ( figure out which you have and then go from there as you start troubleshooting)
*second you need them at the proper time/ in the proper sequence. (unless your are 180 degrees off the timing, you will usually at least get a sputter or backfire if you have all 3 and just at the incorrect time)
Click to expand...

No spark at the coil, I will get new distributor and rotor this week when I have time.

And I did swap this motor in this summer from another XJ and I assumed I wouldn't need to do anything with the timing. Did I need to?
 
snakester14 said:
No spark at the coil, I will get new distributor and rotor this week when I have time.
And I did swap this motor in this summer from another XJ and I assumed I wouldn't need to do anything with the timing. Did I need to?
Click to expand...

How are you verifying that there is no spark at the coil? (what test method?)

If you're certain your new coil isn't poutting out any current, then look upstream of the coil in the circuit. It is a remote possibility that your new coil could be no-good.


You could try searching around over on NAXJA for other no-start / no spark. trouble shooting threads.
 
Did you put it in Neutral to see if it would start?
 
ghost said:
Did you put it in Neutral to see if it would start?
Click to expand...


he said it was an ax-15 in ~post #3. Manual trans = no NSS.

Also, I believe a bad NSS would cause it not to turn over at all?
(I've actually never had a NSS issue in the decade of XJ ownership; knock on wood...)
 
ecu88xj said:
he said it was an ax-15 in ~post #3. Manual trans = no NSS.
Also, I believe a bad NSS would cause it not to turn over at all?
(I've actually never had a NSS issue in the decade of XJ ownership; knock on wood...)
Click to expand...

Ok. Missed that.
 
Well the coil I have isn't new but I think it works.

Gonna go snap a cap/rotor and ignition coil today and mess with some of the relays.

Then after that no idea what to do.
 
Do you have a way to read codes to see if the computer has any in it?
 
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