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Old 11-23-2011, 12:06 AM
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Several Different Issues....I think

I have been desperately trying to get my 1999 Wrangler running right ....with very little luck.

Here are the "issues" that I am seeing .... I think basicly I am screwed.

First off, I am currently getting a P1391 code on the Jeep. If I am not mistaken that makes mention of the CAM and Crank sensors. (both have been replaced). Was told by a mechanic to look into changing out the distributor but he was not exactly positive about it.

Secondly, I have had the beast for about a year now and everytime I go to start it, it is about the hardest damn starting vehicle I have seen. I have to crack on it several times to get it to start. I have replaced lots of different sensors (yes I have even replaced the fuel pump) and parts trying to get it running the right way but still have not had much success.
While messing with one of the sensors I noticed that my Intake Manifold had/has oil in it. I thought nothing of it at the time (I am by far not a mechanic!) but I have been reading recently that the CCV could be clogged..... that being said if it was ran like that for a long time due to operator IGNORANCE, would that effect the Catalytic converter? Other than if it was just plain running too rich?

Last recently after warm up, if I try to hit the gas, it bogs down. I have to sorta baby it to get it up to a running speed (thus the question about the Cat earlier).

Thanks for taking the time to read this ....any and all constructive comments welcomed! Heck I will even take the snarky ones if they at least give me someplace to start!

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Old 11-23-2011, 08:59 AM   #2
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Have you checked the timing. This could be why it's hard to crank.

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Old 11-23-2011, 09:30 AM   #3
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You have been working on this awhile and have probably done allot of this. Start with the basics. If it has been awhile I would replace Plugs, rotor, rotor cap, and wires, Check the timing. The old Chevy's had a vacuum advance on the Distributor that used to bog down like you stated. Ours is probably controlled by the ECM? But you should still be able to see if it is working. As the Rpms increase the timing should also increase and you can see this with the timing light.
I don't think any of the O2 sensors come in to play until after the engine is running for about 3 mins. The Idle position sensor would also cause some of these issues. And it has been known that new sensors were bad from the factory (not likely but can).

Probably nothing here you haven't tried or thought of but that is where "I" would start.

Good luck
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Old 11-23-2011, 12:34 PM   #4
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Have you verified that the check valve on the new pump you installed is actually working correctly? If not that may be why you're still having starting problems. I believe it was Jerry B. (or maybe someone else) who had to get a few different check valves until they finally got one that worked correctly.
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Old 11-25-2011, 12:46 AM
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Thumbs up

Thanks for the input guys.

Rotor, Dist cap, Plugs and wires were all done about a year ago...just redid the plugs again last week.

Timing....have no idea how to check I figure that is a take it to the shop type of repair. I thought the PCM automaticlly set the timing?

All said and done...I have replace the fuel pump assembly, ignition coil, distributor pickup, crank sensor (a year ago), map sensor, battery, plugs, rotor, distributor cap, wires, plugs (twice in a year), Oil pressure sensor, throttle position sensor, and there was another sensor too...I forget which.

I looked again in the air intake yesterday, and didn't see any oil this time so at the very least I am happy about that.

I know when I plugged my laptop in I get a P1391 error

I am also getting some other codes as well

TID $11 on Component ID 01 FAIL
TID $13 on Component ID 01 FAIL
TID $16 on Component ID 01 FAIL

Not positive what those codes are ...thinking from something I read it might be an O2 sensor...but *shrug* I know computers ....not cars!
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