OIL PRESSURE DROPPED from 40 to 0 slowly at idle
#1
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Location: Blaine, Kentucky
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Model: Cherokee
OIL PRESSURE DROPPED from 40 to 0 slowly at idle
I have a 2002 jeep grand cherokee limited 4.7L v8.. I drove it out to the store today and I put it up in park and my oil pressure slowly dropped from 40 to 0 and my check gauges light came on.. I checked my oil and it was low so I put some in.. It was still reading 0 pressure! But as long as Im giving it gas my oil pressure goes back up to 40.. I got it home and let it idle and the gauge jumps back and forth 0-40.. someone HELP ME! this is my only vehicle I have!!!!!!
#4
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Location: Charleston, SC
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Year: 1990 - 2000
Model: Cherokee
Engine: 4.0
Change oil and filter if it has not been done in the past 4000 miles. When the viscosity breaks down, it gets thinner as it gets hotter. With an older engine, this can cause the oil pressure to drop to nothing at an idle.
#6
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Location: Lyons, Oregon
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Year: 1991
Model: Cherokee
Engine: 4.0 HO
when it dropped to 0, did the engine make any noises? If not then I would say sending unit, if it did then I would be nervous. Coach
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#10
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Year: 2001
Model: Cherokee
Engine: 4.0L I6
Had the same problem when I bought my 01 xj. If an oil/filter change Dosent fix it, it's the sending unit. Don't let anyone tell you it's a cracked head or gasket issue, as this situation is IMO impossible to actually happen.
#12
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Year: 2001
Model: Cherokee
Engine: 4.0L I6
Originally Posted by JeepGrand Cherokee Girl
Alright thanks! I already had one jeep dealer tell me that.. Before I got on here and started asking.