2ManyWants

Alright, I had this problem before I put my car in storage last year and I better fix it before I take it out this year if the snow ever goes away around here.

Anyway, my fan isn't going on when the temp goes up, but it will go on if I turn on the heat or A/C. I thought it would be the coolant sensor, but I changed that and the fan still doesn't kick in though. I changed the sensor by the thermostat - was this the correct one? I know someone mentioned something about a sensor between 2 of the cylinders on the passenger side of the car - is there another one over there that may be causing this problem?

Anyone have any ideas?

Chad
92 RS

eightTfourTA

iTrader: (3)

Chad, the sensor you replaced is the temp sensor for the computer. The fan sensor is between the #6 and #8 sparkplugs, right beside the oil dipstick. It's a little buried in there, so you'll have to feel around for it. It's got a connector that you have to squeeze at the sides to release. Before you dump the coolant to change it, test for a bad fan relay. With the engine running, use a piece of wire to jump the pin in the center of the wire's connector to a good ground and see if the fan comes on. If it does, replace the sensor. If you're running a lower thermostat I suggest a Jet fan switch that comes on around 195. If the fan still won't kick on then your relay probably $hit the bed. Driver's side, firewall, in the engine bay.

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DR Stevens
Car #1:
1984 TransAm
305 HO (L69)
750 cfm Q-Jet reman. by Holley
K&N filter
700R4/Superior shift-kit
3.42 lim.slip
underdrive pulleys
Accel HEI Super-Coil
180 stat/hi flow water
pump/Jet fan switch
dual snorkel /w/ hood louver
3" exhaust of some sort
partial emissions delete
Car #2:
1991 Firebird/Formula
305 TBI (LO3)
K&N air filter
Hypertech Thermomaster Chip
more in the near future