My thinking is your oil pump speeds up and slows down with rpms. Is this a high-mileage engine? Maybe you could use an analog gage in place of your oil pressure sending unit, to check oil pressure, see if it reacts the same way as dash gage. In the old days, the minimum oil pressure spec was 10 psi for every 1k rpms. I don't have your oil pressure spec in front of me, that's the spec you need to use.
My 2003 Chevy s10 4.3 v6 lil gauge is rising and falling with the rpm gauge
2003 Chevrolet S-10
-
Maintenance & Repair
i have a 1994 chevy s10 zr2 4.3 tbi, it will shift into 4wd Lo but not 4wd Hi
1994 Chevrolet S-10 4WD
-
Maintenance & Repair
I have a Chevy S10 1993 V6 4.3 liter codes read 12 + 43 I'm changing the distributor today because when I looked at the old one wires were fried I'm also changing knock sensor on left side of the ...
1993 Chevrolet S-10 Tahoe Extended Cab RWD
-
Maintenance & Repair
I got in my chevy s10 and when I started it the battery light was on, the fuel light was on when I had a full tank, and my buttons to switch in and out of 4 wheel drive, don't work and my battery al...
Chevrolet S-10
-
Maintenance & Repair
My 1991 4.3L S10 previously did crank and not start. Now it does not want to crank. All it does is make a single click and everything shuts down. Changed the fuel filter, fuel pump assembly, and f...
1991 Chevrolet S-10 Extended Cab RWD
-
Maintenance & Repair
2003 Chevrolet S-10
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.