What is wrong now? Oil Pressure issue
 

---WILL HAVE A VIDEO UPLOADED SOON---

Alright, issue started when we went on the fall cruise. While driving I was noticing that the oil pressure was reading a bit lower than usually, but still within the "safe" parameters (10psi OP = 1000rpms). Figured the gauge was crapping out as it was an Autometer Pro-Comp Ultra-Lite. Car ran fine even with the issue.

Finally got a new ProSport Oil Pressure gauge and hooked it up and it still is reading low :/

Cold start it reads around 20 psi at idle (around the same as the Autometer read) instead of the usual 60-70 I was seeing before. After it warms up, the car barely reads oil pressure anymore on the gauge and by revving it, I can max out the gauge (100psi). Seems to idle and everything fine still.

Background:
-Oil Level is fine according to dipstick
-Oil relief has been ported on the oil filter housing (did this many months ago and never had any problems, max oil pressure I saw when doing a WOT pull was 80psi or so)

My old Autometer gauge never maxed out over 100 when revving up the engine, but this new ProSport does.

Anybody have any ideas? I am so fed up with the car and it's problems, I am about to sell it.

Re: What is wrong now? Oil Pressure issue
 

Are these mechanical or electric oil pressure gauges?

Re: What is wrong now? Oil Pressure issue
 

Electrical, ProSport one is brand new from MAP.

Re: What is wrong now? Oil Pressure issue
 

I don't like these new ones, early reviews showed there were chauncey.

But lately i have seen a lot of good reviews.
Check your connections, If it they are good it will mess up your readings.

Re: What is wrong now? Oil Pressure issue
 

Here's the video:
http://www.youtube.com/watch?v=SNeSRGKeXSQ

Re: What is wrong now? Oil Pressure issue
 

I hate my prosport gauge. The sender crapped out after only 2 months of use. It also pegged out at anything above 4000 rpm. Also, it did the same thing as your's at idle where it would just drop to 0

Re: What is wrong now? Oil Pressure issue
 

Sooo..... should I worry about my car f-ing up?

Re: What is wrong now? Oil Pressure issue
 

You could try taking off an oil line (not to anywhere important) at idle and make sure at least something's coming out.
(make sure there's a bucket under and you don't have it off for longer than a second)

But chances are your oil pressure is fine. My Stewart Warner use to act funny and didn't run smoothly, it always jumped. But my oil pressure was more than good as Shane and his dyno knows. :rollinglaugh:

Re: What is wrong now? Oil Pressure issue
 

Dont do that... Oil will spray everywhere. Why not just get a mechanical oil pressure tester gauge like this. Check oil pressure with it and if it is fine, replace the electronic gauge inside the car.

http://www.wescotools.com/p-12670-kd...re-tester.aspx

Autozone might even have one to rent, someone on here might have one as well. I do but I'm 2hrs away or I'd let ya borrow it. :)

Re: What is wrong now? Oil Pressure issue
 

Sounds to me like your oil pressure sensor sucks. Try a different one.

Re: What is wrong now? Oil Pressure issue
 

^lol.
Another i thought of watching your video. IF you hold the motor at 2000rpm oil pressure should be 40psi. That is usually my little test if i am scared.

My SW gauge does the same thing, it doesn't move smoothly but i know its sensitive to being grounded good.

Re: What is wrong now? Oil Pressure issue
 

Just thought of something, I didnt see it posted but did you replace oil pressure sensor when you replaced the gauge?

Re: What is wrong now? Oil Pressure issue
 

Yes, took out Autometer gauge+sender and install ProSport gauge+sender.

I'll have to ask my autoparts store if they rent out oil pressure testers, but doubt they do. Hopefully they aren't too expensive then.

Re: What is wrong now? Oil Pressure issue
 

Whats your stock gauge show and is the warning light on? If both gauges are reading the same I doubt its the pressure sensor, but if you conclude that it is contact ProSport and get a new one from them (they have a 1 year warranty).

Re: What is wrong now? Oil Pressure issue
 

What oil filter? If Fram, throw in garbage, replace with wix/equivalent.

Re: What is wrong now? Oil Pressure issue
 

OEM Mitsu only for my cars. A quality filter can make a big difference.

Re: What is wrong now? Oil Pressure issue
 

I used a Napa Gold filter this time around, used Mobil 1 before.

Hughes, I don't have the stock sender hooked up, I took that one out and ran a tap for NPT threads and just screwed the new sender into the housing.

Re: What is wrong now? Oil Pressure issue
 

I use napa gold too. OEM ones tend to leak for me.

Re: What is wrong now? Oil Pressure issue
 

I have a mechanical oil pressure testing gauge. you could come over sometime and we could check it out or I might be able to come to you sometime.

Re: What is wrong now? Oil Pressure issue
 

Where do you live?