924Board.org

[larso]

How many of you actually have one that DOES NOT show lower oil pressure when you turn the deadlights on? I thought that the problem was uncurable after replacing every ground and cleaning every spade...but got it fixed after doing some neat stuff.

[Geddy T]

That was the only thing that worked right on my car. Correction:
working tach
speedometer that functioned, but grew increasingly off as the speed climbed (reads 85 when you're doing 140)
broken fuel gauge
working low fuel light
working oil pressure gauge
broken dome light

[Vince Ponz]

hey, Swami Larso how are we to guess what you did to cure the low oil pressure fluctuation. ESP? Intuition? Dreams? I have tried all of these and none worked. Lets hear it and we will work to cure the problem.
Next week I get my new crystal ball and it will be too late for you to tell us.

Ordered it from my Urologist.

Regards,
Vince (two name) Ponz

[Smoothie]

Another medical establishment conspiracy - now you can't even get a crystal ball without a prescription.

[ltgland]

when the oil pressure switch was replaced on mine, the needle stopped bouncing. The only thing is, it cost £60

[Welsh 924 Blokey]

Mine's never worked. It'll probably be the last thing to get sorted too.

[fielderd]

1980 euro imported into australia, everything electrical is functional except my voltmeter reads 10 volts when ignition is switched on but 12 when car is running. multimeter reading adds 2 volts to both so im blaming VDO

[Ants]

I fixed mine by just wiring each of the 3 gauges together in series and earthing the last one (i my case the oil one) problem sorted.

Ants

[eturbo924]

1982 924 oil press gauge works
1983 944 oil press guage works but sensor to send signal to press guage is faulty.

Oh well.

[awilson40]

Mine does the same thing, I really think it must be a ground issue, but havent been that motivated to chase it.

[numbers]

All of my guages work fine. But, the first thing I did when I bought the car was run a battery cable from the firewall ground to the engine block.

[Joes924]

min quite wroken when I put the wires back on the sender on the back of the head wrong
I have a new one just waiten to pull the head
for you know what!

[SpiNko]

/Me puts hand up. When I got my car, the oil gauge worked, clock did not. got clock from parts car, im all good now.

[larso]

Well I've always had a "working oil gauge", but never one that showed the right pressure when you turned the air cond. switch, heater fan, or lights on (anything that requires a lot of power). I replaced every single brown ground wire that goes under the dash and behind the gauges with thicker wire, and relocated the ground to under the center of the console for easy access. No more rust wires, connections, and sticking my head under the steering wheel each time I want to check a ground. I also found a bad positive cable going to the starter..almost all 924s/931s I have seen seem to have a bad cable, it's rusty and you can't tell until you cut the coating off. I'm not sure at which point the problem was cured, because on the previous 931 I had, cleaning and replacing the spades did NOT work. SO it could be the wire size, age, etc. along with the positive cable being bad. And of course a ground going to the engine block. I'm not 100 percent sure but I think that if your head bolts are a little rusty or dirty, that will cause problems with grounds IF you do not have a ground strap to the block. An easy place to add a ground strap to the block is on one of the starter motor bolts, then going to the steering rack.
If you are having troubles with the oil press. gauge shorting out, the connections may just be dirty. If you disconnect the connections at the oil gauge, I think the gauge pegs..it doesn't just shut off when you disconnect the wires. You don't have to have a wire touching ground for it to be pegging, the wires could have just come of or are rusty. And of course the connections could be backwards if the gauges is pegging. The haynes wiring diagram is a good reference if you can actually see the connections on the gauge, W and G if I remember correctly.

[MBENGOLEA]

My problem is that, when I drive thru an s turn, left first and then right, oil pressure drops to 0 for a few seconds. Is that due to real oil drop or to an instrument failure?
Has somebody experienced the same problem?
Thank you very much.
PS: I have a 924 1979 Sebring