My Oil pressure sensor has blown out for the 3rd time in less than a year. Mechanics I have spoken to are stummped. 2001 SS 3800. I am losing a little coolant, can't find a leak. Some water buildup in the oil cap and PCV valve, but NONE in the oil pan. I only drive the car 5-10 miles at a time. Any ideas about what is going on here?

 

How many miles on your S.S. ?
What is your oil pressure at idle ?
When is the last time you changed your PCV ?
Were your mechanic's certified or experienced ?

Check back to see what our expert member's post on your problem..Good Luck

 

My SS has 143,000
Oil pressure is normal
I put in a new PCV last time this happened(about 2 months ago)

 

Thanks for your reply > 3 out of 4 answers isn't bad

I hope that one of our expert tech member's can help when they see your problem. Please keep checking back when you have the time.

You may want to check the below link on finding a leak ?
How To Find & Fix Coolant Leaks

 

It definitely sounds like an upper/lower intake gasket issue.... To much crankcase pressure would be my guess....

Since you mentioned theres sign of water on the oil filler cap.... That's a dead giveaway that coolant is leaking into the oil.

Have you ever had upper and lower intake gaskets done? if not... With that kinda mileage Its way past due... Usually around 80,000 to 120,000 is usually the Max mileage for the plastic Uim,Lim gaskets. It also may be a wee bit melted by the PCV pipe.. causeing the leakage... Its a very common issue on the 3800's. Driving 10 to 12 miles daily is a not good for any motor... Things don't truly get a chance to warm up properly thus causeing a variety of issue.... My wife use to drive my monte 12 miles to and from work everyday.... Talk about things happening that you didn't expect...LOL Uppers.lower intake, exhaust systems etc etc....

Good luck hope this helps...
I'm sure someone else will chime in with more help.