Oil pressure reading normal??

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Dec 6, 2010 | 12:48 PM

TheNasty0ne

Thread Starter

New Member

Joined: Dec 2010

Posts: 7

Oil pressure reading normal??

1998 blazer LT

Startup 45psi
Completely warm at idle 500-600rpm 20psi(this is where im concerned)

To me 20 is low even at 500-600rpm shouldnt it be at 40+ at all times??

As soon as i step on the gas it goes to 40 its onlt below 40 at idle..

Dec 6, 2010 | 12:51 PM

swartlkk

Administrator

Joined: May 2005

Posts: 41,331

From: Waterloo, NY

According to GM, ~8psi is the minimum oil pressure with pressure gaining about 10psi per 1000RPM to a maximum of around 60psi.

Looks fine to me.

Dec 6, 2010 | 04:52 PM

dobyken

Starting Member

Joined: Sep 2010

Posts: 237

From: Central Florida

ditto...20 is exactly what mine has been for 12 years. Normal driving is 40.

Dec 6, 2010 | 07:19 PM

tntfaguy

Beginning Member

Joined: Dec 2010

Posts: 42

x3....normal from what I remember of all my 4.3's...

Dec 6, 2010 | 07:26 PM

blazinloud

BF Veteran

Joined: Feb 2006

Posts: 3,333

From: Saskatoon, Canada

blazinloud is an unknown quantity at this point

ok, how about one that flickers slightly side to side pretty fast about say 1/8th inch on the gauge at idle/operating temp. mine started doing this a long time ago.

Dec 6, 2010 | 07:29 PM

tntfaguy

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Joined: Dec 2010

Posts: 42

Quote:

Originally Posted by blazinloud

ok, how about one that flickers slightly side to side pretty fast about say 1/8th inch on the gauge at idle/operating temp. mine started doing this a long time ago.

Could be the gauge or sensor. What year is your truck?