so, driving my '93 Jeep Wrangler i noticed lately that the oil-pressure goes up to max. when the car gets *low* on oil ...
anyone care to explain?
the car has the 4.0L straight 6, called "High Output" (whatever that means) ...
hauls ass (for a jeep) ...
never had any trouble with the oil pressure, always used to be around the center on the gauge when filled up nicely.
but lately, when the car gets low on oil, the pressure goes to max. on the gauge until i fill her up with oil again, then the pressure drops to normal.
this is kind of counter-intuitive. shouldn't the oil-pressure *drop* when low on oil ???
what am i missing here?
Andy
Andy ..when you figure it out let me know ...or if I figure it out I will let you know !!!! My 94 Wrangler with the same engine does the same thing .....the lower the oil, the higher the pressure !!!!
where are all the engine gurus when you need them ???
Andy
QUOTE (SirAndy @ Jun 8 2005, 10:23 PM) |
this is kind of counter-intuitive. shouldn't the oil-pressure *drop* when low on oil ??? |
FWIW, I've known quite a few people who have owned Wranglers built in the early and mid 90's, and all of them suffered through weird electrical problems. One had to have the entire instrument cluster replaced twice b/c of speedo and tach display problems. Another had reverse lights that were always on until reverse was actually engaged. This person also had problems with the air venting system -- moving the little selector lever sometimes worked, sometimes didn't, sometimes selected outputs different from what was indicated (don't know if this is an electric system or not)....
I don't know much about 'em, but from what I do know, that generation of Wranglers were just funky This might just be another quirk that endears them to so many people (not unlike how we celebrate the 914??)
why are you going low on oil to begin with? are you burning too much oil? and i can attest to the electrical problems of wranglers. my 98's speedometer sometimes doesn't work at all, or sometimes the whole dash for that matter. sounds like you probably have a bad sensor. it may freak out when there is low oil and react the only way it knows how.
hmmm, never had any electrical gremlins with that car. gauge works when oil level is good.
a broken sending unit that reads high on low oil level but normal on normal oil level? hard to believe ...
keep 'em coming ...
Andy
QUOTE (mudfoot76 @ Jun 9 2005, 01:57 PM) |
FWIW, I've known quite a few people who have owned Wranglers built in the early and mid 90's, and all of them suffered through weird electrical problems. One had to have the entire instrument cluster replaced twice b/c of speedo and tach display problems. Another had reverse lights that were always on until reverse was actually engaged. This person also had problems with the air venting system -- moving the little selector lever sometimes worked, sometimes didn't, sometimes selected outputs different from what was indicated (don't know if this is an electric system or not).... I don't know much about 'em, but from what I do know, that generation of Wranglers were just funky ![]() |
pretend like you live in the bermuda triangle, and that it is just normal.
Yet another reason why I prefer CJ's New cars (trucks) SUCK!! Give me rust or give me death
QUOTE (bd1308 @ Jun 9 2005, 03:29 PM) |
Instrumentation.....seriously. |
QUOTE (SirAndy @ Jun 9 2005, 03:10 PM) | ||
as i said, no electrical problems with the car. ever. all gauges work. always. heater works. AC works. light works. never had any trouble with the electrical ... assuming the gauge works just fine, what could cause the oil-pressure to *rise* when the car gets low on oil ???? ![]() |
why do you need a jeep in san fran anyway?
My 91 has a oddity in it also. My gas guage shows 1/2 a tank when its empty.
Now thats not the oddity. I've rebuilt it twice myself and had a jeep pro do it the last time. Still does it.
Its a Jeep thing. Other people don't understand.
QUOTE (TROJANMAN @ Jun 9 2005, 03:34 PM) |
why do you need a jeep in san fran anyway? ![]() |
i loved my jeep....but the porsche started talking to me in the garage and I started to like it....so now i have the 914.
QUOTE (TROJANMAN @ Jun 9 2005, 04:34 PM) |
why do you need a jeep in san fran anyway? ![]() |
Andy
Maybe another possibility is a partially clogged inlet strainer on the oil pump pickup. I know it still seems strange but it might be worth dropping the oil pan and having a look in there. Maybe some sludge in there doing things to your oil pressure.
i love my jeep, and most people DON'T understand.
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