Probably hard to one-up this...
Thread Starter
Pro
Joined: Jul 2000
Posts: 727
Likes: 0
From: Corona California
Probably hard to one-up this...
While driving home last night I had just gotten off the phone and noticed the analog oil pressure gauge was pinned at the 80 psi max. It's the sort of reading that just catches a fellow's eye so I scrolled my DIC around from oil temp which is almost always what I leave it on and was then digitally informed that the oil pressure was 130 psi. I was/am running fine [dipstick level and oil condition were fine on inspection later] and expect it to be the sensor BUT am wondering why such a "perceived" operating condition wouldn't result in at least a warning if not a reduced power mode. Any thoughts or previous experience?
Race Director
Joined: Nov 2001
Posts: 18,016
Likes: 0
From: sebring florida
Re: Probably hard to one-up this... (THENAKEDi)
Oil pressure sensor?
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Re: Probably hard to one-up this... (THENAKEDi)
Here's one explanation:
Low/No Oil Pressure = Get it fixed as soon as possible even if it means stopping on the side of the road and having it towed.
You'll get a warning for this one because the engine will quit from lack of fuel when the ECM turns off the fuel pump because there's no oil pressure.
High Oil Pressure = Get fixed as soon as practible. This one takes a fair amount of time before you get bearing wash and need the lower end rebuilt.
One good thing about this one though. As the bearings succumb, the oil pressure will go back down somewhat from the increased clearances.
But it's probably a sensor. I don't think it'll pump that much pressure even if the pump pressure regulator hung closed.
(it's a bypass type pressure regulator)
You need a good mechanical gauge hooked up to it to test it.
ANY dealer should be able to do this for you. (Check It)
Good luck with it.
Low/No Oil Pressure = Get it fixed as soon as possible even if it means stopping on the side of the road and having it towed.
You'll get a warning for this one because the engine will quit from lack of fuel when the ECM turns off the fuel pump because there's no oil pressure.
High Oil Pressure = Get fixed as soon as practible. This one takes a fair amount of time before you get bearing wash and need the lower end rebuilt.
One good thing about this one though. As the bearings succumb, the oil pressure will go back down somewhat from the increased clearances.
But it's probably a sensor. I don't think it'll pump that much pressure even if the pump pressure regulator hung closed.
(it's a bypass type pressure regulator)
You need a good mechanical gauge hooked up to it to test it.
ANY dealer should be able to do this for you. (Check It)
Good luck with it.
Thread Starter
Pro
Joined: Jul 2000
Posts: 727
Likes: 0
From: Corona California
Re: Probably hard to one-up this... (VetNutJim)
Thanks Jim! Again, condition of the oil and normal temp suggests that it's bad sensor input but I will have it checked/repaired tomorrow. :)
Burning Brakes
Joined: Jul 2001
Posts: 843
Likes: 2
From: DFW Tx
Re: Probably hard to one-up this... (TeeJay)
I had the same problem on my 98 and the dealership replaced it.
The sensor sits on the top of engine in the back close to the firewall. I was told that you can replace it with out taking the intake manifold off. If that is the case and you have to pay for it then it will not be expensive and will not take long to get done.
The sensor sits on the top of engine in the back close to the firewall. I was told that you can replace it with out taking the intake manifold off. If that is the case and you have to pay for it then it will not be expensive and will not take long to get done.
Thread Starter
Pro
Joined: Jul 2000
Posts: 727
Likes: 0
From: Corona California
Re: Probably hard to one-up this... (motoracer)
That's what my Service Advisor [Mike Stevenson, really a wonderful guy] diagnosed over the phone yesterday afternoon. Probably the best clue was that the errant reading pinned [80 psi analog, 130 psi digital]immediately on ignition with no deviation in operation. I'll be in the shop this afternoon.
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