how do i check the relay for my coolant fan with what tools do i use on 1992 Pontiac Grand Am

my fan doesnt turn on and the car is over heating i did check to see if the fan does work and it does now i need to figure out why the fan wont work when it is connected to my car

by in Commerce City, CO on January 02, 2012
1 answer
ANSWER by on January 02, 2012
You will need a scanner that can read serial data to see what the temperature of the engine is and if the PCM is indicating cooling fan enagement.

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