The Mud Pit > Wrenching
No bus and no start
kirksjeep:
--- Quote from: Mr Rock on September 06, 2012, 09:19:36 PM ---I'm not positive on the TJ but at the botton of the steering column are all the wiring plugs. I have had these loosen up on me before and a quick unplug and reconnect worked for my issues. It may help to unplug one at a time to help isolate the problem.
--- End quote ---
Well it sounds like the camshaft sensor is good, it is not the security system, and the gauge cluster wouldn't keep it from starting. If the tilt made some stuff go crazy, it sounds like the steering column might be the problem. Try pulling apart any connection you can, one at a time and checking for bent pins, rust etc...
Mayhem:
Gonna do some more checking today. With the weird stuff happening around the hazard, I'm going to focus in the column area today. Really hoping to figure something out on this today.
Also, could someone please message me the address for the club meeting?
skibum:
I don't think a clock spring or a gauge cluster will cause a no start. It sounds like a bad crank sensor but I am used to using a scan tool & watch the crank sensor for a signal so am only taking a wild guess. Crank sensors are very common on the 4.0L. Also could be the cam sensor. Depending on the yr you either have a Distributor with a pick up inside or the DIS set up with just a cam sensor at the top of a short housing in place of where the Distributor was. If you don't have a scan tool then it would be nice if someone had spare parts for you to try. Be very carefull when replacing the cam sensor because it only goes in one way. You must have the engine on TDC before removing it. Too much to explain so just read up on how to replace it. Recomend going for the crank sensor first unless you find someone with a scan tool. Check for codes because that can give you an idea of what the PCM is not seeing. The no bus on the cluster is prob just a bad conection in the back of the cluster. There is a TSB for the conection issue that involves replacing both the conectors behind the cluster (All conections must be soldered) and then using Electral Contact Cleaner (you can buy this at any parts store) & gently clean all the small pins in the back of the cluster. I use a very small round type wire brush to get between the pins. DON'T BEND THE PINS. The pins may look fine but there is a fine coating of carrosion that builds up on them that you usually can't see & synce the bus conection uses 5 volt or less signals then it does not take much carrosion to disrupt the signal. Hope this helps you. Good luck.
Mayhem:
Alrighty then. Not sure whats up with the hazards. Not a big deal right now. Found the problem with the no bus thing. Crank position sensor. Unplugged it and all my gauges came up and the no bus went away. Excellent. Researching this tells me I should order a Genuine Mopar unit. The others show a really high failure rate.
Thanks for all the help!
kirksjeep:
Good call Bob!!! ;D
Greg- glad to hear you found the problem!!!
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