Oil light at idle
#21
Join Date: Apr 2006
Location: Denver, Colorado
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RE: Oil light at idle
ORIGINAL: foscaldo
I put a gauge on it and it shows a hair over 6 psi when idling and when you accelerate it goes up. Any thoughts?
I put a gauge on it and it shows a hair over 6 psi when idling and when you accelerate it goes up. Any thoughts?
If still low do an oil pump replacement before it is drive much more or you'll be looking for an engine.
#22
#24
RE: Oil light at idle
I had this exact same experience with my 2000 Grand Cherokee: Ran the pressure tests, replaced the sender unit, replaced the oil pump and ended up having to replace the engine...all told: $5,000.
The oil pump was indeed the problem, but by the time it was replaced the damage was already done...crank bearings had worn to the point that even a new oil pump couldn't maintain the required pressure at idle, so the oil light would come on. I had unwittingly inherited this problem from the previous privateowner just one week after I bought it.
Moral of the story is: If the oil light is coming on at idle, don't wait to replace your oil pump. Stop driving it, get it towed and replace the pump.
Since I also have an '03 I'm considering changing my oil pump for the new improved design even though I don't have the oil light at idle...yet!
The oil pump was indeed the problem, but by the time it was replaced the damage was already done...crank bearings had worn to the point that even a new oil pump couldn't maintain the required pressure at idle, so the oil light would come on. I had unwittingly inherited this problem from the previous privateowner just one week after I bought it.
Moral of the story is: If the oil light is coming on at idle, don't wait to replace your oil pump. Stop driving it, get it towed and replace the pump.
Since I also have an '03 I'm considering changing my oil pump for the new improved design even though I don't have the oil light at idle...yet!
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