AWW$HEEET Posted September 16, 2010 Report Share Posted September 16, 2010 Hello squad. Changed oil in my jeep last night as normal. Bolted it back up and i get 1/4 mile down the road and my gauge is pegged at 0 on my oil pressure gauge. Im wondering if I have a legitimate problem, or if my gauge is messed up. Can anyone come up with a picture of the oil pressure sender wire or where it plugs in? I have a loose connector but im not sure where it attaches, and its raining outside. Too lazy to be lookin up under there. Thanks Quote Link to comment Share on other sites More sharing options...
BlackMess Posted September 16, 2010 Report Share Posted September 16, 2010 Any coolant getting into the oil??? Notorious for cracks in the head! http://i81.photobucket.com/albums/j221/dvdapb/OilPressureSendingUnit47v8.jpg Quote Link to comment Share on other sites More sharing options...
AWW$HEEET Posted September 16, 2010 Author Report Share Posted September 16, 2010 Yeah, i know they are notorious for that but I drove it to work this AM with no issue. Ill check for coolant. Quote Link to comment Share on other sites More sharing options...
John Bruh Posted September 16, 2010 Report Share Posted September 16, 2010 we've had a few the the gauge didnt work. i highly doubt that 4l had an issue that quick like that. Quote Link to comment Share on other sites More sharing options...
SRTurbo04 Posted September 16, 2010 Report Share Posted September 16, 2010 looks like the sensor is right about the filter.. knowing your dumb ass you probably hit it an broke it or something .... Quote Link to comment Share on other sites More sharing options...
Skinner Posted September 16, 2010 Report Share Posted September 16, 2010 Any coolant getting into the oil??? Notorious for cracks in the head! http://i81.photobucket.com/albums/j221/dvdapb/OilPressureSendingUnit47v8.jpg how about you post a pick of a jeep 4.0 the sending unit is right above and infront of the filter. Quote Link to comment Share on other sites More sharing options...
AWW$HEEET Posted September 16, 2010 Author Report Share Posted September 16, 2010 looks like the sensor is right about the filter.. knowing your dumb ass you probably hit it an broke it or something .... I did change the oil in the dark.... Quote Link to comment Share on other sites More sharing options...
FourString Posted September 16, 2010 Report Share Posted September 16, 2010 The cracked head issue is really only common on Jeeps with the "0331" head casting. A hairline crack will develop around cylinder #4. You will notice a loss of coolant long before you will lose oil pressure from damage caused by the crack. My vote is that you either accidentally damaged the oil pressure sending unit connector or wire, or maybe you knocked it loose and it fell off while driving down the road. If all of these look fine then look into a possible defective filter. Out of curiosity, do you use Fram filters? Quote Link to comment Share on other sites More sharing options...
AWW$HEEET Posted September 16, 2010 Author Report Share Posted September 16, 2010 No, its a purolator or some shit. Quote Link to comment Share on other sites More sharing options...
BlackMess Posted September 16, 2010 Report Share Posted September 16, 2010 http://i702.photobucket.com/albums/ww27/meanmax/Component%20locations/P1000904-1.jpg Better?? Quote Link to comment Share on other sites More sharing options...
Skinner Posted September 16, 2010 Report Share Posted September 16, 2010 http://i702.photobucket.com/albums/ww27/meanmax/Component%20locations/P1000904-1.jpg Better?? still not a 4.0 Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted September 16, 2010 Report Share Posted September 16, 2010 you probably just broke the sending unit its right above the filter Quote Link to comment Share on other sites More sharing options...
Rhett Posted September 16, 2010 Report Share Posted September 16, 2010 The cracked head issue is really only common on Jeeps with the "0331" head casting. A hairline crack will develop around cylinder #4. You will notice a loss of coolant long before you will lose oil pressure from damage caused by the crack. Could this be why my coolant is almost a brown color now? I am not leaking any or burning through it and I go from full to fill in about 5 weeks? Quote Link to comment Share on other sites More sharing options...
Skinner Posted September 17, 2010 Report Share Posted September 17, 2010 Could this be why my coolant is almost a brown color now? I am not leaking any or burning through it and I go from full to fill in about 5 weeks? check you oil is it milky? Also you Jeep will not have the 0331 head. you more then likely have a head gasket issue. Quote Link to comment Share on other sites More sharing options...
Patrick Posted September 17, 2010 Report Share Posted September 17, 2010 It's not a difficult fix, my Jeep registered max oil pressure all the time. Not expensive either. Sending units are going bad all the time. Might take you 10 minutes to replace. Rhett the 0331 head was on 00-01 Cherokees, don't know about the GC. Quote Link to comment Share on other sites More sharing options...
Skinner Posted September 17, 2010 Report Share Posted September 17, 2010 It's not a difficult fix, my Jeep registered max oil pressure all the time. Not expensive either. Sending units are going bad all the time. Might take you 10 minutes to replace. Rhett the 0331 head was on 00-01 Cherokees, don't know about the GC. 0331 head was used from 2000 to 2006 on grands, TJs, and XJs. Quote Link to comment Share on other sites More sharing options...
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