Weird problem...

820 Views 11 Replies 8 Participants Last post by eurofinder, Aug 6, 2013

Draky

Discussion Starter · Aug 1, 2013

I saw the CEL come last night and noticed my oil pressure gauge was about at 1.5-1.8 bar. I read in my manual for my 92 UrS4 that low oil pressure would cause the CEL to come on. So I went to change the oil today and the oil filter is on way too tight, couldn't get it off with a standard filter wrench. I had to get to work so I tightened the plug down, filled her up and went to work and watched the pressure gauge like a hawk. I noticed that she's not running pegged at 5bar while on the freeway (which she usually does) and when at a light she's still running about 1.5-1.8 bar oil pressure and the CEL keeps coming off and on. I checked the oil when I pulled into the parking lot at work today and it's full.

Yes,at this point I need to have the code pulled on it, but would a crazy tight oil filter cause this?

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Draky

Discussion Starter · #2 · Aug 2, 2013

All right, I went out to my car on my break and looked around, oil is full and no oil leaking. I am no longer sold on the oil pressure thing... So then I realized that I don't how to pull codes on this car, I didn't see a ODB plug in under the dash at the steering wheel.

Anyone know how to pull codes on a 92 UrS4? Thank you guys!

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SapperMike

· #3 · Aug 2, 2013

Just because you have full oil doesnt mean you wont have oil pressure issues. Your oil pump could be faulty or clogged. What type of oil do you use?

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

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Draky

Discussion Starter · #4 · Aug 2, 2013

Per the PO they've always used Shell Rotella T6, I looked into it and it seemed like a good product so I put the same in there today.

But should it be 1.5-1.8 bar at idle and it does to up to just shy of 5 bar while on the freeway.

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pkw

· #5 · Aug 2, 2013

yep, perfect.

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Katman

· #6 · Aug 2, 2013

When did you do you last oil change?

On an old Peugeot I had, it leaked a lot of oil, so I jsut kept topping it up (figuring it didn't need changing, as I was always adding.. Ooops!)
After ~ !0k miles.. Oil light wold come on at idle. Finally got to changing the oil.. Came out black, stinky , and *really* thin...

Maybe just time for an oil change?

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Kapn.K

· #7 · Aug 2, 2013

The odb plug is in the front of the relay station on the car's left side. Under the hood near the base of the windshield. It's about a 5x8" black box with a single steel bar that flips onto the cover to hold it down. There are two plugs(a black one and a white one) with two terminals in each. Take a paper clip and bridge the front(towards the front of the car) conductor in the black one to the front conductor of the white one for at least 4 seconds with the car running(whenever possible). Remove it and the CEL will start flashing the code until the ignition is shut off.

All the info is here: http://www.sjmautotechnik.com/troub...onclick="window.open(this.href);return false;

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seiche

· #8 · Aug 3, 2013

Low oil pressure will absolutely NOT set a CEL, it will only turn on the oil pressure light. Check the info on Scott Mockry's site as linked above. If the CEL is coming on, there will be a code stored. Don't worry about a code for the flywheel sensor G28. That is normal with each ignition key cycle until after the engine is cranked.

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nuugen

· #9 · Aug 3, 2013

seiche said:
Low oil pressure will absolutely NOT set a CEL, it will only turn on the oil pressure light. Check the info on Scott Mockry's site as linked above. If the CEL is coming on, there will be a code stored. Don't worry about a code for the flywheel sensor G28. That is normal with each ignition key cycle until after the engine is cranked.

/\ this.
The CEL is tied to sensors/emissions etc, but a 92 S-car electronics are not smart enough to set a code for oil pressure. Your oil pressure looks to be normal--if you want to be 100% positive, though, you can temporarily install an oil pressure gauge into one of the oil pressure sensor ports on the driver's side of the block. The pressure senders do fail but it is pretty rare.
I would pull a scan and see what is actually making the CEL come on.

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Draky

Discussion Starter · #10 · Aug 3, 2013

Thanks guys for the help. I was just thinking about this problem again and as mentioned, the CEL on my car is really a Check Sensors/Emissions Light.

Today I saw that the CEL was on solid while the engine warmed up when I first drove it this morning but then after that it was gone even after sitting for 5+ hours it didn't come back on. I still need to do the blink test but busy weekend as we're celebrating one of my kids b-days so that will have to wait.