Oil Pressure problem

jshaffer11 · July 17th, 2011, 02:51 AM

I Just bought a 95 GT with moderately modified 5.0. Car runs great and has lots of power but once completely up to operating temp the oil pressure gauge drops to zero at idle and I start hearing what sounds like lifter rattle, especially when shifting. none of this present when cold. Gauge jumps right back to normal as soon as I touch the accelerator. Is this an actual oiling poblem or an electrical problem with the gauge? Is lifter rattle normal at temp?

fb93 · July 17th, 2011, 03:10 AM

Oil pump was my first guess.

1988 convertible · July 17th, 2011, 05:09 AM

+1 oil pump i would guess as well... lifter rattle shouldnt be heard at normal temp there should always be a constant flow of oil to lubricate...

DigitalDC89 · July 17th, 2011, 12:08 PM

i would get a cheap mechanical oil pressure gauge to see what the oil pressure really is at. if it really is low, you could try running some thicker oil as a temporary fix until you can properly diagnose the problem.

July 17th, 2011, 02:51 AM	#1
jshaffer11 Look Ma! My First Post! Join Date: Jul 2011 Posts: 1 iTrader: 0 reviews	Oil Pressure problem I Just bought a 95 GT with moderately modified 5.0. Car runs great and has lots of power but once completely up to operating temp the oil pressure gauge drops to zero at idle and I start hearing what sounds like lifter rattle, especially when shifting. none of this present when cold. Gauge jumps right back to normal as soon as I touch the accelerator. Is this an actual oiling poblem or an electrical problem with the gauge? Is lifter rattle normal at temp?

July 17th, 2011, 12:08 PM	#4
DigitalDC89 Regular '88 Mustang GT Join Date: Apr 2010 Location: Allentown, PA Posts: 463 iTrader: 0 reviews	i would get a cheap mechanical oil pressure gauge to see what the oil pressure really is at. if it really is low, you could try running some thicker oil as a temporary fix until you can properly diagnose the problem. __________________ '02 Mustang GTm Convertible - N/A Cammed Daily '88 Mustang GTm - 1/4 Mile Build - 750rwhp Project '97 Saturn SL2m - Ex-Nitrous Build - Back-Up Daily

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July 17th, 2011, 03:10 AM	#2
fb93 Regular 1993 Mustang GT Join Date: Jul 2011 Location: PA Posts: 93 iTrader: 0 reviews	Oil pump was my first guess.

July 17th, 2011, 05:09 AM	#3
1988 convertible Regular 1988 Join Date: Jun 2007 Location: London Posts: 215 iTrader: 0 reviews	+1 oil pump i would guess as well... lifter rattle shouldnt be heard at normal temp there should always be a constant flow of oil to lubricate...

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