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Posted on Jan 02, 2017
SOURCE: oil pressure gage
At idle, at operating temp is there any ticking from top end of engine? Are there any knocking noises brom bottom end?
If no noises, change oil and add some Marvel oil to clean out galleys. If that dosent work, change oil pressure sendingf unit. Also, if you have a mechanical oil pressure gauge, hook it up and take a direct reading. Oil pressure (in any vehicle) at idle should NEVER be less than 15psi. Generally in 4.0 jeep engines it's never less than 30, with a high reading at driving rpm of about 40-60! (but, you did not mention what engine you have)
Posted on Dec 28, 2008
The Aurora is a low pressure oil system. The only solution available at this time is to increase the oil weight. I went o straight 30W to solve the idle alarm issue. Some use 20W oil and that works too.
With 20W you will be at 80 to 90psi cold then drop to 20-30psi hot.
I first replaced the oil pressure gauge and it was worse. I put the original back in and it was better. Then went to 30W and all is fine.
Running it that way for a few years now.
Posted on Apr 03, 2010
This is Ron out of Vero Beach Florida. I have been doing trannys for years. The problem you described is caused (more than likely) by a seized clutch pack. Depending on the trans, and your car should be RWD with a 700r4 tranny, there are several sets of clutch packs and at least one band. Automatic transmissions rely on fluid pressure to "engage" the correct set of clutch discs, at the right time , to engage and change gears. I have seen in the past, where a customer parks his car for the evening and the next morning, no move. What happened?? More than likely, a clutch pack was on it\'s way out but cause the car was hot the plates were free, but after cooling, they can weld themselves together and actually "lock-up". In the morning you know the end result. Your tip on "moves in Nuetral" is the give away. Ron
Posted on Jan 18, 2013
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