My oil pressure gauge is off the map on being high, is this a gauge malfunction or a bad sensor or could it actually be a problem? 95 T/A LT1 engine
-
1995 Pontiac Trans Am Formula -
When the wire going to the sensor touches the ground it will peg the gage. The oil pressure sensor is located on the back of the engine. Here is a picture of it.
Trace the wire and make sure it isn't shorted to ground somewhere.
BTW where roughly in Atlanta are you?2002 Electron Blue Vette, 1SC, FE3/Z51, G92 3.15 gears, 308.9 RWHP 321.7 RWTQ (before any mods), SLP headers, Z06 exhaust, MSD Ignition Wires, AC Delco Iridium Spark Plugs, 160 t-stat, lots of ECM tuning
1995 Z28, many mods, SOLD
A proud member of the "F-Body Dirty Dozen" -
I'm not sure if this is the sensor or an actual reading, because I would think that if it was a wiring issue it would remain ova on the extreme high pressure side with just the switch on, but it doesn't kick over to til I start the car, and rest a 0 with the car off1995 Pontiac Trans Am FormulaComment
-
It would be a lot easier to help you if you if you gave us the actual readings... What does it read, in PSI, at idle, at part load, at max RPM? Does it ever move or does it always sit in one fixed location? Does it vary with temperature? Without any more detail than "off the map on being high" we have no idea what the problem could be.
If the sensor was an open circuit or the wire was off the sensor (and not grounded) you would get the gauge pinned to the maximum reading whenever the key is turned on. It would return to "0" (I think that's what you described) when you turned the key off.Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motorComment
-
the gauge is as far as it can go on the high side of the oil pressure gauge, it doesn't move it stays where it is from the moment you start the car, and returns to 0 when you turn the car off1995 Pontiac Trans Am FormulaComment
-
Actually, it's just the opposite. If grounded, there will be no (or very low)pressure reading. If open, the gauge will peg.Originally posted by Jeff 95 Z28
What you describe is more like the "old days".
Rob B 95Z A4 Tech Page (Part numbers / locations, how to's, schematics, DTC's...) Home Page - shbox.comComment
-
I'm showing my age again.Originally posted by Rob B (shoebox)Actually, it's just the opposite. If grounded, there will be no (or very low)pressure reading. If open, the gauge will peg.
What you describe is more like the "old days".
2002 Electron Blue Vette, 1SC, FE3/Z51, G92 3.15 gears, 308.9 RWHP 321.7 RWTQ (before any mods), SLP headers, Z06 exhaust, MSD Ignition Wires, AC Delco Iridium Spark Plugs, 160 t-stat, lots of ECM tuning
1995 Z28, many mods, SOLD
A proud member of the "F-Body Dirty Dozen"Comment
Comment