01-05-2004, 02:28 PM
Join Date: Nov 2002
Location: Middle Tennessee
Temp gauge reading too hot after LT header install...
This weekend I got my Hooker Long Tubes installed in my car.
During tear down of the stock stuff, I attempted to unplug the coolant temp sensor in the driver's head, and ended up breaking the grey plastic part that holds the wiring on.
I bought a new coolant temp sensor from O'Reily's. It looks the same, but with a black plastic wiring clip instead of grey. The rest of the sensor looks identical as well.
We installed the new coolant sensor and went on with the header install. We got the headers installed, the coolant topped off and everything.
But letting the car run for a few minutes causes the temp gauge on the dash to read over 210* and yet the heat blows cool air, indicating that the gauge is wrong. The cooling fans were not running.
I think that either the sensor is too far into the head and blocking a passage causing excessive heat build up, OR I didn't get the cooling system bled well enough..
Does anyone else have an idea?
The engine has run for less than 5 minutes at one time.
2005 Dodge Grand Caravan.
Yeah, it's an f'in Minivan!