XJ Oil Pressure Low: Why only the XJ's?
#61
CF Veteran
Thread Starter
Interesting train of thought there... curious as to why I've seen countless XJ's with the factory 195 t-stat always seem to sit at about 208-210 on the gauge then. I even have a brand new high flow rad in mine, just installed it a few weeks ago... the water pump, t-stat and housing little over a year ago. and mine sits right at 208 like clockwork.
Maybe the thing to do is to normally have both fans on if the main fan isn't big enough, why not put a 200F thermal switch on the electric fan....? Many cars run 2 fans.
And because it's off to one side of the fan shroud, it can only cool one side of the radiator. Pfft! Shisccabob
Last edited by 97grand4.0; 09-25-2019 at 06:20 PM.
#62
CF Veteran
Thread Starter
I guess I am one of the few who havent had oil psi problems. My last xj, 165k miles, idled warm @ 30 psi. The one before that, which I rebuilt the engine, idled at the exact same pressure. One was a aw4 one was a ax15. So I am pretty sure it has nothing to do with the trans. Oil temp is more important than coolant temp or trans temp when talking about bearings. Highly doubt it's the lifters either, unless they are bypassing where the plunger meets the body of the lifter. Cam bearings seem to wear out faster than anything.
Last edited by 97grand4.0; 09-26-2019 at 05:43 AM.
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