Hi
Im new to this Forum and need some help.

I have a 1982 T/A and i just installed a Remanufactured Long block.

The car runs fine but my oil pressure guage goes up to max and holds there..
I was wondering if it was most likely my sending unit. or what else it could be? I did reuse the old unit. It worked fine before but sat in the garage for afew months.

Thanks Alot
-Michael

 

yup its probably the sending unit, try hooking up a mechanical guage to get an accurate reading.

 

What are you saying? It stay's at max even after you shut the motor off, or it maxes out but goes back to 0 after shut down?
What's the max reading on your gauge? Perhaps your gauge can't read the new pressure your new engine is putting out!
Elect. sending unit's are a lot like women, if you don't turn them on frequently, they'll give you trouble. Like 89rs said it's probably the sending unit. I would mount and keep the mech. gauge because they work better and are quicker to react to changing pressures. Elect. sending units aren't cheap either, a good mech unit is about half of what a fac. unit costs.

 

It goes to zero when the engine is off. when i start it it climbs up past 60psi then stops i think the guage just cant go any further..

I was outside letting it run for awhile and it seems to be acting better.. Its at around 50 now with the idle at 1500. Im breaking in my cam and just want to make sure everything is normal.

-Michael

 

Change the sending unit, it's not really that expensive. Mine was doing the same thing and after the swap it reads right.

-Ozzy

 

Ya looks like ill do that. Thanks Alot for your help

 

Did you put in a high-volume, high-pressure oil pump in that motor?? If so, thats probably why...

 

When I had a v-8 firebird not orginal motor, my guages in the car when up to 80 psi and thats about what the pressure the oil pump in my new engine put out.... stayed around 60 -70 psi at idle and about 80 most of the other time this is with 10w - 30 oil. I did however once have an oil sending unit go out on me and if where it says 80 psi was at approx 45 degrees when the unit went out it read way past that off scale high at about the 90 degree positon

 

First the usual questions. So the gauge is pretty much pegged throughout the RPMs? If so, skip to the bottom. If the gauge read higher, but still fluctuates with RPM, might be beneficial to hook up a gauge, but i would still skip to the bottom.

a.) Attach a mechanical gauge to verify (or dis-verify, for that matter)
b.) Replace the sending unit/switch (depending on application)

 

I Notice now while driving it does move it will be at 50 at a light then go up to 60 and beyond when driving.. Im not sure if its a high volume pump. It came with the new engine. I guess they would include a stock one.

 

Even though it's an elect. gauge, it still has moving part's in the sending unit. It's gumed up from sitting with old oil inside it. Get a new sending unit.