Question about 1994 Dodge Ram

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Oil pressure gauge drops to zero when stopped

Posted by mjmueller1 on

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  • rentracing Sep 04, 2008

    2004 Dodge ram 2500 oil pressure drops to zero everyday. This has been going on now for 4000 miles. New sending unit is $47.00 at Autozone.

  • Anonymous Jan 13, 2009

    oil pressure gauge comes on and I am going through abnormal amounts of oil in the truck everyday but cannot isolate a leak

  • lhames62 Jan 15, 2009

    2005 ram 1500 oil pressure goes from normal to 0 with no noise or rattle in engine. started all at once.

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Anonymous

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The Oil Pressure switch is notorious for going bad on Dodge truck. I recently change out my oil pump on a 5.2 L engine only to find that I had a faulty switch. The switch for a 5.2L is only 16.99 at autozone and is less time consumming than replacing the oil pump.

Posted on Jan 15, 2009

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2004 gmc envoy. Oil gauge drops to zero when stopping. Car had been running for about 1hour in city traffic.
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3 Answers

What causes oil pressure to drop to zero but goes with accelleration
If your oil is full, it's most likely electrical. If it's not electrical, then it's most likely something like a crack in the pickup tube, sucking air if I had to guess.

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If something such as a relay or the ignition module is getting hot and killing the engine, it might have to cool down before it restarts. And the engine would stop then the oil pressure would drop to zero.

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While drivingoil pressure is at 40. after half hour of highway driving oil pressure drops to 0 or below. i stop and restart oil pressure comes back. ideas?
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Mar 17, 2013 | 2003 GMC Yukon XL

1 Answer

My check gauges light is on, oil hands goes over to zero, moves up, light goes off, when it drops back to zero, gauge light comes back on.
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You could replace the sending unit as a test, or have someone check the oil pressure with a mechanical gauge.

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1 Answer

If pickup tube on the oil pan is bad will my oil pressure drop to zero at stops and at acceleration go back up
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I have a 2000 blazer lt 4wd. when i start it the oil pressure reads 40. after i start driving it slowly drops to 20 asnd fluxuates around there while i am driving. once i stop at a red light it drops to...
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2004 Doge Ram 2500 5.7 Hemi 190K mile had oil pressure gauge drop to ZERO and check gauges light come on and engine shut down.. Check oil 1 guart low, add oil. let cool. crank up, good gauges drove home 45...
If the valve lifters are quiet you most likely have oil pressure even with gauge showing "0".Sounds like the oil pressure switch going bad.I would try that first.

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1 Answer

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You need to put a mechanical gauge on it to read actual oil pressure, sometimes the sensor is wrong, have seen the gauge be off (even on newer than yours). The first thing anyone would do is the mechanical pressure test with a screw in oil pressure gauge. That would be my advise.

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