King Turd Polisher
Join Date: Dec 2007
Location: Apache Junction, AZ
89Chubby is offline
Re: Oil Pressure Sensor location
It's to my understanding that if the ECM isn't getting any signal of oil pressure from the oil pressure switch - which would be the case, if the switch was unplugged - it cuts out fuel. Is the motor actually running differently, or is the problem limited just to your dash gauge? Sounds more like a ground issue, or a problem with the gauge/cluster, itself rather than the sending unit, to me.
Now would be a groovy time to upgrade to a mechanical oil pressure gauge. Just locate the stock sender at the back by the distributor, screw in a T-fitting, and then thread the stock switch and the line for your aftermarket gauge into that. Don't forget to wrap the threads with Teflon tape, too.
1989 Chevrolet S-10 Blazer 2WD 4.3 auto (SOLD)
1986 GMC S-15 2WD X-cab 2.8L T-5 (SOLD)
1992 Chevrolet S-10 Blazer 4WD 4.3 auto (DAILY BEATER - 235k and still going)