Oil Pressure Gauge PEGGED!?!?
05-24-2006, 03:15 PM
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Oil Pressure Gauge PEGGED!?!?
I went to prime the oil pump again after the new motor been sitting a while and hasn't competly broken in yet. I pulled the passenger side valve cover and I cannot see any oil squirting anywhere in there??!!
Went to look at the aguge and as soon as I hit the key it went to as far rigth as it can go, well beyond 60 PSI. When it was first primed a week or so ago everything was fine. It read 30-45 PSI depending on the drills RPM.
Anyone have any ideas whats up??
Went to look at the aguge and as soon as I hit the key it went to as far rigth as it can go, well beyond 60 PSI. When it was first primed a week or so ago everything was fine. It read 30-45 PSI depending on the drills RPM.
Anyone have any ideas whats up??
05-24-2006, 03:43 PM
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Pegged = wire disconnected or broken, sending unit open
Zero = wire or sending unit shorted
Basically the same discipline as an idiot light sender; short to ground = low pressure - light on, open = high pressure = light off.
Alligator-clip-lead the wire to ground, see if the gauge goes to zero. If it does, the gauge and wiring are good, and you need a sender.
Zero = wire or sending unit shorted
Basically the same discipline as an idiot light sender; short to ground = low pressure - light on, open = high pressure = light off.
Alligator-clip-lead the wire to ground, see if the gauge goes to zero. If it does, the gauge and wiring are good, and you need a sender.
05-24-2006, 04:07 PM
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Well, something is defenitly wring (of course...look who it is). The gauge when I hit the kill switch a couple times wasn't pegged anymore but it looked like it would be reading the correct oil pressure EXCEPT it was kind of bouncing back and forth slightly.
I was concerned about not getting oil through the pushrods...
I was concerned about not getting oil through the pushrods...
05-24-2006, 04:36 PM
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Car: 1993 Nissan 240sx
Engine: Turbo KA24DE
Transmission: 5 spd
Axle/Gears: 4.08 VLSD
Well if the gauge is dancing around that can also mean the sender is fuxx0red, right?
05-24-2006, 04:44 PM
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
yea. i hope its nothing but this is MY car so i know there is a big problem there...
can anyone else comment on the not getting oil to the heads??
can anyone else comment on the not getting oil to the heads??
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06-17-2006, 04:13 PM
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Just now got to start the car again and noticed very low oil pressure. Got a mech gauge hooked up but havnt stared it again...scared to screw more stuff up....
Any other input/suggestions/comments???
Any other input/suggestions/comments???
06-17-2006, 08:29 PM
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
The mech gauge shows 10 PSI at idle and 30+ up to 60 PSI with RPM's.
I'm worried about the low idle PSI.
I'm worried about the low idle PSI.
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