I recently serviced my 93 XJ, 4L 6 Cyl, in the process I
broke my oil pressure sensor. I replaced the sensor with an
after market sensor and since then when I get the engine hot
my oil pressure gauge drops to just above zero at idle. It
kicks up to about 40(normal)when its under a load. I used
10w-30 during the service. This has concerned me quite a
bit being that this problem did not exist until I changed
the sensor. At idle, when I am reading low pressure I have
pulled my fill cap to see t"I feel sorry for people who don't drink. When they wake up in the morning, that's as good as their going to feel all day!" Frank Sinatra
My stock 98 XJ does the same thing. It has ever since it
was bought new and it has 158,000 miles. I'd get it check
out but i wouldn't worry.Don't make me angry, you wouldn't like me when I'm angry.
My 96 does the same thing and and I am running 10w-40 and it
only has 109000 miles. Tried 10w-40 to see if it would make
the gauge read different. Nope.1996 XJ 6.5" Rusty's, 34" LTB's, 220 amp alt, 4.0, AW4, NP231 NON SYE, CB 1997 ZJ DD 1996 ZJPlum Broke Limited 5.2, Jet performance chip Stage II, Dual exhaust, CAI, Audivox Prestige APS997a alarm, Performance Distributors Ignition Upgrade Click on each for pics Plum Broke Build thread
Installed an after market mechanical pressure guage a couple
of days ago and put it to the test over the weekend. All
pressure stayed in range, guess that takes care of that!!"I feel sorry for people who don't drink. When they wake up in the morning, that's as good as their going to feel all day!" Frank Sinatra
I have a 96 with the same problem, new oil sending unit and
run with a over sized oil filter and 20/50 oil 40+ psi on
gauge. part number for bigger oil filter is 30001 purolator,
ac delco pf 2,fram ph8a,k&n gold hp-3001,mobil 1 m1-301,
motorcraft fL1a,napa gold 1515,wix 51515. miles on jeep
195,353
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