beakman
NAXJA Forum User
- Location
- Rivals, KY
hi everyone,
Well, somehow I put over 300k miles on my last XJ, and about 200k on this one, and I've never had any real problems with either, other than one starter and alternator on the first, and an alternator on the second.
I went out a couple of weeks ago, and my 98 XJ 4.0/automatic simply wouldn't start. Checked the forums, checked the codes, and figured the CPS was worth a shot. But that didn't do it.
Symptoms:
* cranks like a champ, but doesn't fire
* no spark at the plugs
* fuel pump doesn't prime when key is put in the "on" position
* code 1694 on the OBD
* only the oil pressure gauge moves a little in the "on" position, but they all operate fine if you trigger the gauge test
What I've looked at:
* fuel pump relay checked, all fuses checked
* CPS replaced (as mentioned above)
* wiggled/checked PCM and TCM plugs
* unplugged battery overnight to reset computer
So I'm still seeing 1694. I'll be checking continuity and voltage later. If I rule out wiring problems, what's more likely to need replacing? The TCM or the PCM? I don't want to throw parts at it (especially since I've already thrown a CPS at it), so I'm trying to narrow it down as best I can. Luckily there's a pullapart not too far away, and several XJs being parted out on craigslist, so I can at least try a computer on the cheap if need be.
Thanks in advance to everyone!
Well, somehow I put over 300k miles on my last XJ, and about 200k on this one, and I've never had any real problems with either, other than one starter and alternator on the first, and an alternator on the second.
I went out a couple of weeks ago, and my 98 XJ 4.0/automatic simply wouldn't start. Checked the forums, checked the codes, and figured the CPS was worth a shot. But that didn't do it.
Symptoms:
* cranks like a champ, but doesn't fire
* no spark at the plugs
* fuel pump doesn't prime when key is put in the "on" position
* code 1694 on the OBD
* only the oil pressure gauge moves a little in the "on" position, but they all operate fine if you trigger the gauge test
What I've looked at:
* fuel pump relay checked, all fuses checked
* CPS replaced (as mentioned above)
* wiggled/checked PCM and TCM plugs
* unplugged battery overnight to reset computer
So I'm still seeing 1694. I'll be checking continuity and voltage later. If I rule out wiring problems, what's more likely to need replacing? The TCM or the PCM? I don't want to throw parts at it (especially since I've already thrown a CPS at it), so I'm trying to narrow it down as best I can. Luckily there's a pullapart not too far away, and several XJs being parted out on craigslist, so I can at least try a computer on the cheap if need be.
Thanks in advance to everyone!