Oil Pressure Sensor and Thermostat. WTF is the problem?!
Thread Starter
TECH Regular
Joined: Aug 2010
Posts: 446
Likes: 0
From: Midland MI
Oil Pressure Sensor and Thermostat. WTF is the problem?! Alright guys, I had a CEL pop up on the trip up north last weekend. I had the car scanned and it had two codes. I cannot recall the exact code #'s but one was that the thermostat was not functioning properly. It appears to be stuck open as the car was running cold. Secondly, the other code was "Oil Pressure Sensor Performance".
With this being the case I replaced the Oil Pressure Sensor and Thermostat last night.
Two stipulations to the replacement however. 1. The OPS was very hard to find and the only people that had it could find it under the 06 Pontiac GTO and that it was compatible with the LS4. So I used that one. It was $89.
Secondly.....The thermostat appears to still be having an issue. We all know where the GXP rides on the temp gauge, which is exactly on the middle line half way up the gauge. However, mine is slightly under that line, about half way between the normal line and the next line down. I hooked the scanner up to the car and it is operating at roughly 190* Fahrenheit. The thermostat is rated at 186*. You would think the car would show the correct temp.
On the way home today, the CEL came back on with the same code for the OPS and the temp gauge is still incorrect. WTF else can I replace?
ANY AND ALL HELP WILL BE LOOKED INTO.
Also, what should the oil pressure be in the LS4 at idle?
With this being the case I replaced the Oil Pressure Sensor and Thermostat last night.
Two stipulations to the replacement however. 1. The OPS was very hard to find and the only people that had it could find it under the 06 Pontiac GTO and that it was compatible with the LS4. So I used that one. It was $89.
Secondly.....The thermostat appears to still be having an issue. We all know where the GXP rides on the temp gauge, which is exactly on the middle line half way up the gauge. However, mine is slightly under that line, about half way between the normal line and the next line down. I hooked the scanner up to the car and it is operating at roughly 190* Fahrenheit. The thermostat is rated at 186*. You would think the car would show the correct temp.
On the way home today, the CEL came back on with the same code for the OPS and the temp gauge is still incorrect. WTF else can I replace?
ANY AND ALL HELP WILL BE LOOKED INTO.
Also, what should the oil pressure be in the LS4 at idle?
On The Tree
Joined: Apr 2011
Posts: 151
Likes: 0
From: Kenosha, WI
Just cause it throws codes for those things doesnt mean they need to be replaced, start by getting the exact codes your car is throwing and searching on those, that will tell you what steps you need to take to diag the problem
Thread Starter
TECH Regular
Joined: Aug 2010
Posts: 446
Likes: 0
From: Midland MI
However I did clear the code once I got home and it has yet to appear again. Hmmmm.....
