Question about 1999 Jeep Grand Cherokee
Hi Oil will thin very quickly with heat and reduce working pressure. do check oil level is correct ( too low will have oil working harder to cool moving parts and thus absorb more heat and get thinner) Please get back to us if you have further query else please accept the suggestion.
check correct grade of oil is being used. Change the engine oil and filter. Clean the oil pressure sensor lead and put heavier oil in it like 10w30 run the engine and see what the pressure does. If it gets better then change the oil and filter again after you drive it 500 miles as there still could be some water in the crank case thinning the oil. There could be several mechanical reasons for low oil pressure such as a bad oil pump (not likely), clogged oil lines/ports, worn main bearings, clogged return oil ports from the heads. None of these last things are cheap to fix. However, if it's a motor with clogged oil ports (thick oil,thin oil, gunk on the inside of the valve cover, etc) there are products that will disolve it that you can flush the motor with and then change the oil. This 'fix' can sometimes cause more problems to crop up and should be used as a last resort.
Oil will thin very quickly with heat and reduce working pressure. do check oil level is correct ( too low will have oil working harder to cool moving parts and thus absorb more heat and get thinner)
Please get back to us if you have further query else please accept the suggestion.
Posted on Mar 30, 2011
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Posted on Jan 02, 2017
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