North American Turbocoupe Organization

oil press. high
Not long ago, I changed out my oil pres. sending unit, it was leaking around it, so I said, what the hell and changed it, thread taped it up and hasn't leaked since, but it has been reading all the way up the the highest part of the norm section since then. Dangerous to the engine or anything? Hope not. Thanks for any advice.

Chuck W Offline
Posting Freak
Where was it reading before you changed it? And does it drop as the car warms up?

The Cat in the birdcage...
83 TC Clone, 80 Cougar XR-7, 85 Volvo 244 Turbo, AND 88 Scorpio

TCx2 Offline
Senior Member
I have one of my birds (87) that reads high.

Question I would have... how are the other gauges reading? One of the symptoms of the Instrument Voltage Regulator (IVR) being bad is the gauges reading too high. First time my IVR failed I was running down the highway and suddenly notice my TEMP was WAY up (almost in the red) and the OIL was WAY up also. (seems it would be low as temp thinned it out) In any event as I was on the verge of panic I noticed my gas gauge which had read about 3/4s of a tank not too long ago, pegged over full.

So.. are your other gauges way off as well?
If so I would suspect the IVR.

If not.. let me know what you find out.. as my 87 has a new IVR and I still get high readings on the oil and was getting ready to change out the sender.

88 White TC, 5spd, Loaded
88 Black TC, 5spd, Base
87 LtBlue TC, 5spd,Loaded
67 Green Ford Fairlane 428CJ 5spd
89 Fiji Blue Chrysler Conquest
03 Mercury Marauder "Supercharged"
03 Ford Excursion(King of the SUVs)
04 Mustang Cobra - Screaming Yellow
10 Challenger R/T "Supercharged"

It used to read in the middle, and nope, it doesn't drop off as the car warms up, stays right up there. Think the parts store just gave me the wrong one? All the other gauges read perfectly fine.

Pete D Offline
I have changed 3 of them on 3 different cars and each new one reads higher than any of the ones they replaced. Two of them drop some as the oil warms up, the third one hardly drops at all. My suggestion would be to put a mechanical pressure gauge on it to see what you are actually getting. I got a cheap pressure gauge that I screw in where the sending unit goes, check the cold and hot idle readings and rev it to 2000 hot for a reading, remove the gauge and put the new sending unit in. Or mount one inside the car.

88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges. New engine shortly, ported head and
manifolds, polished and cc'd chambers, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, Walbro 190 pump and T-3 for starters. KB subs
and jack rails.
Pete Dunham


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