TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
Long story shortI originally owned this car a couple years ago and dd without any issues. Sold it to a friend who stripped it for paint and then let it sit in his garage. Then I bought it back from him. Total time it sat was about a year with a few drives here and there in it. I bought it back, swapped in a t56 and doug's longtubes. Before I started the install I made sure to start and let it idle for a bit to make sure everything was ok. I didn't notice any abnormally high oil pressure then. Upon installing the headers I pulled the oil cooler off and put on another new k&n oil filter (only kind I use).
After getting everything installed I started the car and noticed that it now has almost 60psi of pressure (even when warm) at idle. And will almost peg the stock gauge with a quick rev. Engine to my knowledge is stock with almost 160k miles on it. I was told it was rebuilt but no proof.
Oil is 5qts of Mobil 1 10w30 and whatever the reccomended k&n filter is. The same combo I put nearly 30-40k miles on the car with without incident.
Any ideas?
This ad is not displayed to registered members. Register your free account today and become a member on ThirdGen!
Have you checked the stock gauge reading against a known good mech one?
Gauge sensor may be bad ; common
I was wondering about that. I have a brand new electric gauge that was going into the pillar but that still isn't a guarantee. I'll see if I can track down a mechanical one before I do any major changing.
-wount (peg) it though....does make 70 ppi when cold too.
See, I am worried that something is actually wrong. Before I made all these changes it would have normal pressure. Don't really remember for sure the exact pressure but it wasn't as high as it is now. But all of a sudden its damn near pegging the gauge. If it had been high all along I wouldn't be as worried now, but the sudden jump has me a little on edge.
BTW, still no mech. gauge yet. I was hoping to get a few more ideas on what it could be, before I started taking things apart kind of blindly.
In all likelihood, it is simply a failed sending unit. The new ones are rather notorious for that. You should be able to rent/borrow a mechanical gauge from Advance Auto, Auto Zone, Pep Boys, or some similar establishment around you. Or, you could just replace the sending unit, and probably fix the problem.
