Well, I'm the mechanic(ish), so I'm afraid that's not an option. ;-)
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95XJ - No start - Fuel problem?
- Thread starter QKRTHNU
- Start date
Well, I'm the mechanic(ish), so I'm afraid that's not an option. ;-)
Thanks, laughing is better screaming and cussing.
I went out to verify spark, but of course now that it's been sitting in the sun for a few hours it started after 10-15 seconds of cranking.
It sounds like there's a loose connection somewhere, either in the ECU, or the coil or a ground somewhere. I can tell when it's getting close to starting. When there's no chance of it starting it just cranks fast and strong, but when it's about to start the cranking will intermittently slow and sounds weak like it all of the sudden doesn't have enough cranking amps, I'll see if I can get a video with audio.
Current working theory: Bad ECU, near/below freezing temperatures something is contracting and losing contact, or moisture is freezing and pushing something apart.
It was just above freezing this morning when I was testing this, so I'm not 100% convinced I've found the issue yet, tomorrow should be a better test.
Went out this morning and tried to start:
http://www.youtube.com/watch?v=bouXV1jS3jY
To test my theory I did this:
http://i3.minus.com/ibvGInce1ZbVwr.jpg
After about 10 minutes I tried to start it again:
http://www.youtube.com/watch?v=CYTbGY1XMaA
Like I said, not entirely conclusive, but it's somewhat promising.
In the second video you can hear the sound I was trying to describe when it's close to starting.
It was just above freezing this morning when I was testing this, so I'm not 100% convinced I've found the issue yet, tomorrow should be a better test.
Went out this morning and tried to start:
http://www.youtube.com/watch?v=bouXV1jS3jY
To test my theory I did this:
http://i3.minus.com/ibvGInce1ZbVwr.jpg
After about 10 minutes I tried to start it again:
http://www.youtube.com/watch?v=CYTbGY1XMaA
Like I said, not entirely conclusive, but it's somewhat promising.
In the second video you can hear the sound I was trying to describe when it's close to starting.
- Location
- MilkyWay Galaxy
Word of warning to those that might read and try this.
Not all brake cleaner aerosols are alike. Many are non-flammable and have chlorinated solvents in the formula which you never want in the combustion chamber as they form hydrochloric and hydroflouric acid as combustion by products. :gag:
If the product has the word Chlor or flour in the ingredient name, like perchlorethylene do not use it as starter fluid. Ingredients such as toluene, acetone, MEK, xylene, ethanol, methanol, commonly found in the carburetor cleaner formulas works well.
Not all brake cleaner aerosols are alike. Many are non-flammable and have chlorinated solvents in the formula which you never want in the combustion chamber as they form hydrochloric and hydroflouric acid as combustion by products. :gag:
If the product has the word Chlor or flour in the ingredient name, like perchlorethylene do not use it as starter fluid. Ingredients such as toluene, acetone, MEK, xylene, ethanol, methanol, commonly found in the carburetor cleaner formulas works well.
FIXED!
I fixed this several months back but forgot to come back and update this thread; hopefully I can save some other Jeeper a lot of headaches.
It was the Crankshaft Position Sensor... :-/
Pro-tip: I had tested the CPS using the factory specified test procedure and it checked OK, but it appears that the sensor was only working intermittently. Put the new sensor in and it fired right up. I was simultaneously elated that the problem was resolved and pissed off at myself for taking so long to fix it.
It's been starting right up now for several months (and no more random stalling), so even though other things seemed to temporarily fix the issue this was definitely the root cause all along.
I fixed this several months back but forgot to come back and update this thread; hopefully I can save some other Jeeper a lot of headaches.
It was the Crankshaft Position Sensor... :-/
Pro-tip: I had tested the CPS using the factory specified test procedure and it checked OK, but it appears that the sensor was only working intermittently. Put the new sensor in and it fired right up. I was simultaneously elated that the problem was resolved and pissed off at myself for taking so long to fix it.
It's been starting right up now for several months (and no more random stalling), so even though other things seemed to temporarily fix the issue this was definitely the root cause all along.
