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oil pressure running high after change
05-07-2013, 10:37 PM
#1
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Model: Cherokee
oil pressure running high after change
hi all,
I changed the oil on my 99 Jeep Cherokee Sport a few weeks back. Had a heck of a time getting the oil filter off. It was stuck so bad I had to make a couple of runs to the auto parts store to buy different styles of wrench. the engine sat without any oil for about 3 days. over the past week I noticed the oil pressure riding really high around 80 when i hit the gas, and settling back down around 60. i've read the posts about the sending unit going bad and causing a bad reading at the gauge, but the engine has also started to stall out periodically which has me thinking this might be a legit issue. is it possible that a clot developed while the engine sat dry? i have synthetic castrol in there now with a Bosch 3402 filter.
cheers,
BD
I changed the oil on my 99 Jeep Cherokee Sport a few weeks back. Had a heck of a time getting the oil filter off. It was stuck so bad I had to make a couple of runs to the auto parts store to buy different styles of wrench. the engine sat without any oil for about 3 days. over the past week I noticed the oil pressure riding really high around 80 when i hit the gas, and settling back down around 60. i've read the posts about the sending unit going bad and causing a bad reading at the gauge, but the engine has also started to stall out periodically which has me thinking this might be a legit issue. is it possible that a clot developed while the engine sat dry? i have synthetic castrol in there now with a Bosch 3402 filter.
cheers,
BD
05-07-2013, 11:05 PM
#2
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Year: 2004
Model: Grand Cherokee
Engine: 2000 4.0
hi all,
I changed the oil on my 99 Jeep Cherokee Sport a few weeks back. Had a heck of a time getting the oil filter off. It was stuck so bad I had to make a couple of runs to the auto parts store to buy different styles of wrench. the engine sat without any oil for about 3 days. over the past week I noticed the oil pressure riding really high around 80 when i hit the gas, and settling back down around 60. i've read the posts about the sending unit going bad and causing a bad reading at the gauge, but the engine has also started to stall out periodically which has me thinking this might be a legit issue. is it possible that a clot developed while the engine sat dry? i have synthetic castrol in there now with a Bosch 3402 filter.
cheers,
BD
I changed the oil on my 99 Jeep Cherokee Sport a few weeks back. Had a heck of a time getting the oil filter off. It was stuck so bad I had to make a couple of runs to the auto parts store to buy different styles of wrench. the engine sat without any oil for about 3 days. over the past week I noticed the oil pressure riding really high around 80 when i hit the gas, and settling back down around 60. i've read the posts about the sending unit going bad and causing a bad reading at the gauge, but the engine has also started to stall out periodically which has me thinking this might be a legit issue. is it possible that a clot developed while the engine sat dry? i have synthetic castrol in there now with a Bosch 3402 filter.
cheers,
BD
05-07-2013, 11:15 PM
#4
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Stalling on these things can be several common problems unrelated to engine lubrication.
I'd toss a new sender on there. Do you get any oil pressure reading with the engine off? That would be an excellent sign.
I'd toss a new sender on there. Do you get any oil pressure reading with the engine off? That would be an excellent sign.
05-08-2013, 04:49 AM
#5
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Year: 1999
Model: Cherokee
Engine: 4.0
Most likely the oil pressure sending unit as already mentioned. It is a very common failure on the 4.0
Do yourself a favor and buy a Mopar unit directly from Jeep. Best bet for reliability and longevity.
Do yourself a favor and buy a Mopar unit directly from Jeep. Best bet for reliability and longevity.
05-09-2013, 07:15 PM
#6
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the oil gauge reads around 40 when the engine is off and the power is on. guess i need to get that replaced. the car has been stalling out more frequently, when trying to park or anytime the RPMs drop down to idle. prolly need to take it in to be serviced.
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05-21-2013, 12:27 PM
#8
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well, replaced the oil pressure sending unit and the gauge reads normally again. also finally got a chance to remove the throttle body this weekend. The TB wasn't too dirty, but the IAC sensor was pretty bad. Cleaned that up and also power-washed the K&N after market air filter. seems to be idling better now, so far so good. thanks for the advice, guys!
here is a good link with photos and directions for cleaning the TB/IAC.
http://www.xjtalk.com/showthread.php?t=10844
here is a good link with photos and directions for cleaning the TB/IAC.
http://www.xjtalk.com/showthread.php?t=10844
05-21-2013, 12:34 PM
#9
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Year: 1999
Model: Cherokee
Engine: 4.0 I6
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