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Car Forum / Jeep / May 2006ZJ 4.0 Oil Pressure Sensor twitchy meter syndrome
Pulling the wire sends it full scale, otherwise it tends to twitch to full scale erratically every now and then. Wiring looks clean. Engine ground OK, but bypassed anyway as a test--no help. Factory oil filter replaced about a month ago, twitch didn't appear until about 2 days ago. Do I need to drain the oil before swapping that thing or is there a check valve behind it? For 13 bucks I'll swap it before I'll bother pressure testing the pump. Lon did pass the time by typing: > Pulling the wire sends it full scale, otherwise it tends to twitch to > full scale erratically every now and then. Wiring looks clean. Engine > ground OK, but bypassed anyway as a test--no help. Factory oil filter > replaced about a month ago, twitch didn't appear until about 2 days ago. That's exactly what mine was doing before it just started staying between 70 and 80 psi. I thought about taking it out and flushing with carb cleaner but like you say, the replacement is cheap. > Do I need to drain the oil before swapping that thing or is there a > check valve behind it? For 13 bucks I'll swap it before I'll bother > pressure testing the pump. Draining isn't necessary. When I did mine there might have been a few drips to wipe up but that was it. I did put a little bit of thread sealant on the last few threads just to stop any oil leaks.  SignatureDougW DougW proclaimed: > Lon did pass the time by typing: > [quoted text clipped - 16 lines] > I did put a little bit of thread sealant on the last few threads just > to stop any oil leaks. Thanks Doug It looks like it has a fairly low value on the pita scale...not as young as I was last year. Lon did pass the time by typing: > Thanks Doug np > It looks like it has a fairly low value on the pita scale...not as young > as I was last year. It was easy. Only problem was space to move a wrench around. Nobody is getting any younger even if they refuse to grow up. :) Sittin here with my leg up on the computer. I found a camouflaged tree at the company picnic today. While running to catch a frisbee I jammed my small toes real good. Monday I'll probably have a Dr. take a look. Haven't done something like this since I was a kid. At least being older comes with a better stocked medicine cabinet and there were some left over hydrocodone tabs. Right now I could park a Jeep on my foot and not know. :) SignatureDougW C'mon, Doug. Growing old is mandatory - growing up is optional. Did I mis-read (possible) his message or did he really mean the original factory installed oil filter was what he just now got around to changing? > Lon did pass the time by typing: > [quoted text clipped - 17 lines] > there were some left over hydrocodone tabs. Right now I could park > a Jeep on my foot and not know. :) SignatureWill Honea Hardest part of the job is trying to get the new sensor to start and thread, it has fine threads on a very slight taper. The second hardest part will be finding a bottle opener for the CORONA that follows. :) Snow... > Pulling the wire sends it full scale, otherwise it tends to twitch to full > scale erratically every now and then. Wiring looks clean. Engine ground [quoted text clipped - 4 lines] > valve behind it? For 13 bucks I'll swap it before I'll bother pressure > testing the pump. That's why one of my bottle openers is bolted on my Jeep's bumper: http://www.billhughes.com/68jeep.jpg God Bless America, Bill O|||||||O mailto:LWHughes3rd@aol.com > Hardest part of the job is trying to get the new sensor to start and thread, > it has fine threads on a very slight taper. The second hardest part will be > finding a bottle opener for the CORONA that follows. :) > > Snow... How do you open the bottles while you are driving? > That's why one of my bottle openers is bolted on my Jeep's bumper: > http://www.billhughes.com/68jeep.jpg [quoted text clipped - 8 lines] >> >> Snow... It's against the law to drink and drive. Some how that doesn't save the 10-100 stops. ;-) God Bless America, Bill O|||||||O mailto:LWHughes3rd@aol.com http://www.billhughes.com/ > How do you open the bottles while you are driving? I never said a word about drinking while driving, I asked how you opened the beer bottles while driving with the opener bolted to the front bumper.... > It's against the law to drink and drive. Some how that doesn't save > the 10-100 stops. ;-) > God Bless America, Bill O|||||||O > mailto:LWHughes3rd@aol.com http://www.billhughes.com/ > >> How do you open the bottles while you are driving? Drive real fast. Throw the bottle real hard--but just right--to the front of the car, skillfully raking it past the opener at the perfect angle. Then wait until it comes back towards you as your vehicle catches up with it. billy ray proclaimed: > I never said a word about drinking while driving, I asked how you opened the > beer bottles while driving with the opener bolted to the front bumper.... [quoted text clipped - 5 lines] >> >>>How do you open the bottles while you are driving? It has pretty fine threads, but the new sensor came with a whitish gunk along the back of the threads and went in rather easily except for there being just enough room to barely get a wrench on the darned thing, and not quite enough room to move that wrench. Snow proclaimed: > Hardest part of the job is trying to get the new sensor to start and thread, > it has fine threads on a very slight taper. The second hardest part will be [quoted text clipped - 10 lines] >>valve behind it? For 13 bucks I'll swap it before I'll bother pressure >>testing the pump. |
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