So I just bought a '91 jeep wrangler 4cyl 5spd and just noticed that the oil pressure gauge is shooting to 80 and past when I accelerate. Now I am not mechanically inclined, and I had a buddy of mine who is really good with jeeps look it over right when I got it and he couldn't find anything wrong with it. When I pop off the oil cap, there is a lot of blowback. I even took it to a shop today and the guy told me that I would need a new engine because of a bearing going bad. Now should I believe him, or go beat the guy up who sold me the jeep? I don't really want to put a new engine in it, but I do love my jeep. What do you guys think it is? Any feedback would be much appreciated.
well oil pressure will increase the faster you go, that is normal... although i dont know specifically what pressure it should be at, other than that.. do you hear anything weird.. and have your jeep friend look at it again
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As fas as I can tell there is no noticeable knocking or anything like that. The guys who checked it out said that there was too much blowback and that there are metal shavings in the oil. But when I checked out the dipstick, I saw no metal shavings. Idk what to do
always instal a mechanical gauge and verify your oil pressure before pumping a bunch of money into what may be a ghost problem as it could be a simple faulty sender unit or a relief valve but find the true oil pressure then go from there
At idle pressure should be around 25-35 psi, above 1600 rpm 35-75 psi. that is for the 2.5L. All according to Chilton manual. Thats if your gauges work correctly, they are famous for being intermittent.
It turns out that I threw a bearing. My engine started to knock ever so slightly, and there were metal shavings in the oil. So at this point I am probably going to contact a few people who have engine connections and get a swap. I don't have the time to do it myself, or I would pop that hood open and work all day. Sigh. Live and learn.