Oil pressure gauge - The 1947 - Present Chevrolet & GMC Truck Message Board Network

aitch · 07-12-2006, 05:22 AM

Just started noticing oil pressure dropping almost to zero at idle and check gauges light coming on. (98 GMC 4x4, 183K miles)
If I shift to neutral and get rpm's up, gauge comes up to ~40 lbs.
No overheating, plenty of oil.....
My first thought is a faulty sending unit.
Anyone experienced this?? Sending unit? Oil pump?
Thanks.

STEVE A WILBURN · 07-12-2006, 07:27 AM

my 88 350 4x4 did the same thing.i had 160,000 miles on it. it was a oil sending unit, i put in a new one. and also put in a new oil pump. she still going .steve

aitch · 07-12-2006, 06:43 PM

Quote:

Originally Posted by STEVE A WILBURN

my 88 350 4x4 did the same thing.i had 160,000 miles on it. it was a oil sending unit, i put in a new one. and also put in a new oil pump. she still going .steve

Thanks Steve, I'll pick up a sending unit and see what happens.
Hope that's all it takes. . . . . .

07-12-2006, 05:22 AM	#1
aitch Senior Member Join Date: Sep 2004 Location: N.W. Arkansas Posts: 456	Oil pressure gauge Just started noticing oil pressure dropping almost to zero at idle and check gauges light coming on. (98 GMC 4x4, 183K miles) If I shift to neutral and get rpm's up, gauge comes up to ~40 lbs. No overheating, plenty of oil..... My first thought is a faulty sending unit. Anyone experienced this?? Sending unit? Oil pump? Thanks. __________________ 69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale)

07-12-2006, 07:27 AM	#2
STEVE A WILBURN Registered User Join Date: Feb 2004 Location: TONEY ALA Posts: 307	Re: Oil pressure gauge my 88 350 4x4 did the same thing.i had 160,000 miles on it. it was a oil sending unit, i put in a new one. and also put in a new oil pump. she still going .steve __________________ JUST HAPPY TO BE ALIVE.



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