allancl

I have a 91 305 TPI, converted to carb.
Every since I got the car it has had running troubles.
One day it would run, the next no.

Anyway, the oil presure gauge, when I turn off the car, the needle will sink to the right, that is full 60 psi indication. Other times it will sink to the 0 psi direction. Is this normal?

Or is an absolute indication of a bad oil pressure switch? I just don't want to spend $40 more bucks, on top of the hundreds spent already, if I do not have to,

ReverendZ28

I have a similar problem with my 88' Only the oil Pressure gague reads way beyond the 60psi it just peaks as soon as power is on... Wonderin if we might have the same problem...-Rev

BigBadLou

iTrader: (3)

You can easily check if it is the sensor's fault or if the wiring/gauge is to blame.

Disconnect the oil pressure sender connector (above the oil filter). It is doable without jacking the car up. Now the gauge should read all the way to the right.

Now ground the tan wire in the connector. The gauge should read 0 pressure.

If you get the correct readings, it's either the connector (dirty) or the sensor that's causing the bad reading on the gauge.

Hope this helps.
Lou

ReverendZ28

Damn lol, you know I never actually thought to check the gauge lol hare to notice it. Thanks for the help. -Rev

allancl

Is there a special tool to get the switch off.
I can't seem to get a wrench or channel locks in there to get the thing out.

BigBadLou

iTrader: (3)

Did you already determine that the sender is faulty?

You just need to use channel locks and with some knuckle busting, it will come out eventually. I'd bet yours is still stock (like mine was) and won't wanna come out without a fight.

Keep trying different wrenches, channels locks, pipe wrenches, adjustable wrenches etc. It will come out.

Lou

Apeiron

It doesn't matter what the gauge does when the power is off.

ReverendZ28

I found what I think it the sender unit its just behind the vacum hose for the brake boost but their is nothing connected to the sender... I cant seem to find where somthing would even connect any more help would really help thanks again...-Rev