Disc valve on transmission operation?
11-22-2015, 05:39 PM
#1
Pro
Thread Starter
Disc valve on transmission operation?
I'm getting a P0121 Coolant performance code.
Various Rennlists direct me to the disc valve on the transmission being problematic. I've confirmed the valve is not damaged, the temp sensor is working and I have good vacuum.
I do notice the valve isn't closing on idle or when the transmission in a cold state. I'd assume the valve would be shut and not allow coolant to circulate through the transmission cooler until a hot state.
Can someone confirm the valve should move to a closed state when the engine is idling?
Thanks
Various Rennlists direct me to the disc valve on the transmission being problematic. I've confirmed the valve is not damaged, the temp sensor is working and I have good vacuum.
I do notice the valve isn't closing on idle or when the transmission in a cold state. I'd assume the valve would be shut and not allow coolant to circulate through the transmission cooler until a hot state.
Can someone confirm the valve should move to a closed state when the engine is idling?
Thanks
11-23-2015, 02:00 PM
#2
Pro
Thread Starter
An update for future references:
- I've confirmed the valve should move and be in a closed state when the engine is idling.
- Turns out I had a partial vacuum leak coming from a small nipple which is attached to a main-line-vacuum source. Since this is right next to the limited-slip cover, I suspect it can get damage easily if there is LSD work.
- I've confirmed the valve should move and be in a closed state when the engine is idling.
- Turns out I had a partial vacuum leak coming from a small nipple which is attached to a main-line-vacuum source. Since this is right next to the limited-slip cover, I suspect it can get damage easily if there is LSD work.