1996 Rodeo Oil Pressure Drops to Zero

1996 ALL OTHER MAKES ALL OTHER MODELS
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JRE133
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  • 1 POST
My rodeo has 140k When the engine is cold the oil pressure is 40-60 psi'
After driving for about 10 minutes the oil pressue drops to about 25-30 at low speeds. but when I stop at intersections the oil drops to ZERO. Oil level is good - What can this be ? HELP
Jan 21, 2006 at 3:22 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
try the oil pressure sender first, thats the cheapest place to start. Use the factory oil filter. If still low could be the oil pump
Feb 2, 2006 at 7:36 AM
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JOUGH626
  • ✓Experienced Mechanic
  • 55 POSTS
Also, make sure your running the correct weight of oil. Having a good pressure at start up and then alot less later tells me that the oil could be thinning too much when it heats up.
Jun 17, 2006 at 12:43 PM

Suggested Repair

Start with the oil pressure sender, the least expensive check, and use a factory oil filter. Confirm the correct oil weight, since pressure that is good when cold and much lower when hot can mean the oil is thinning as it warms. If pressure is still low, the oil pump may be at fault.

Conversation Summary

A 1996 Rodeo with 140,000 miles shows 40-60 psi oil pressure when cold, then drops to 25-30 psi at low speeds after about 10 minutes and to zero when stopped, despite a good oil level. Experts suggest checking the oil pressure sender first, using a factory oil filter, and verifying the correct oil weight because the oil may thin when hot. If pressure remains low, the oil pump could be the cause.

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