Is there a ground on the thermostat housing on my car ( 91 Civic Si ) d16a6?
My speedo and tripometer aren't working. My temp is reading Hot all the time, even when motor is cold. When you rev past 4k rpm it goes down to cold. Alot of people have told me that the problem is a ground. A buddy of mine said one loose ground can make your instrument cluster do some weird stuff. Does anyone have a picture of the ground or a wiring diagram! This would help dramatically. Thanks

 

bump

 

There is a ground on the thermo housing.It can cause problems if not hooked up , wether or not that is your problem who knows.Check to see if it is hooked up and then go from there.

 

if that isn't hooked up I dont think car starts if its loose car should die randomly.

 

well my starts, but the temp jumps all over the place. I bought to auto meter gauges, temp and oil psi and they are fine. But the instrument cluster is fukked. It wasnt like this when i took the motor out. And my speedo isnt working