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[kevinduffy]

I have an '88 924S US car. As with other 924/944 cars I have owned, the oil pressure gauge always reads 5 bar + when the engine is running. Recently, the gauge housing cracked and a bought a new VDO OP Gauge that reads in PSI. When I installed it, it also reads MAX psi!!!\\

Where do I look next? OP sending unit?

Thanks
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88 924S - soon to be a replica 924GT

[Paul]

Unhook the wire from the OP sender and see what the gauge reads (with the motor running).

If it's still 5, you most likey have a short in the wiring from the sender to the gauge.

If it reads 0, you have a bad OP sender.
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

[edh]

Does the pressure read at max. when ignition is on but engine not running? - mine did this & I just replaced the pressure sender.
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current - '90 944S2, '00 986S,
ex - '90 944 turbo '86 924S, '88 924S