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Unread 09-24-2012, 09:16 PM   #1
jfulton73
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'97 TJ - oil pressure question

Have a 97 TJ 4.0 I6, 162k miles. Recently oil pressure gauge dropping to zero when stopping. Levels off at stop to about 20 lbs then back to normal 40 lb running. Don't really want to think about a rebuild, but trying to confirm my fear.

Other "issue:"
Ac damper door closes with ac on and engine under load. Back off throttle and door opens. Thinking vacuum issue or damper vacuum switch.

Any and all insight is greatly appreciated. Hobbiest but have rebuilt a Ford 460 which was a blast!

Thanks,
Jim

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Unread 09-24-2012, 09:47 PM   #2
WhiteMtnJeep
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Take the sending unit for the oil pressure out and put a mechanical gauge in to test. It will tell you for sure. Your AC issue is most likely a vacuum leak. Check where the lines attach to the manifold and at the vacuum bottle. Not sure where it is on the 97, but the later years it's under tge battery tray. It's a common issue.
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Unread 09-25-2012, 09:42 AM   #3
jfulton73
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Quote:
Originally Posted by FernBchJeep
Take the sending unit for the oil pressure out and put a mechanical gauge in to test. It will tell you for sure. Your AC issue is most likely a vacuum leak. Check where the lines attach to the manifold and at the vacuum bottle. Not sure where it is on the 97, but the later years it's under tge battery tray. It's a common issue.
Thank you! I'll give that a try!

Much appreciated!
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