Car = 94 GT, farely stock.
I received the car with blown headgasket and don't remember if the fan was working before I traded engines. Now at least with the new engine the fan does not work.
Here's what I know so far. Car on the fan does not come on even if engine temps are HOT. Engine temp sensors has been tested (good) and changed with another just in case (also tested good).
When engine is on, if the engine temp sensor is removed the fan comes on.
During the ECU self test KOEO the high and low speed fans will come on as they are supposed too during the test.
The fan systems consists of fan, engine temp sensor, ECU, and CCRM (relay). I cannot figure out why the ECU is not turning on the fans when it gets hot.
I know how change the wiring (ground 17/14) and turn it on with a switch but I really want to figure this problem out and not change from the factory wiring.
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I received the car with blown headgasket and don't remember if the fan was working before I traded engines. Now at least with the new engine the fan does not work.
Here's what I know so far. Car on the fan does not come on even if engine temps are HOT. Engine temp sensors has been tested (good) and changed with another just in case (also tested good).
When engine is on, if the engine temp sensor is removed the fan comes on.
During the ECU self test KOEO the high and low speed fans will come on as they are supposed too during the test.
The fan systems consists of fan, engine temp sensor, ECU, and CCRM (relay). I cannot figure out why the ECU is not turning on the fans when it gets hot.
I know how change the wiring (ground 17/14) and turn it on with a switch but I really want to figure this problem out and not change from the factory wiring.
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