Cooling Fans Chevy Impala Ss Forum Here's my advice as far as cooling system upgrades, as you can very easily find yourself in an aftermarket setup that isn't an upgrade or a liability in terms of reliability. 1) upgrading the fans alone on a stock rad probably won't be worthwhile, i wouldn't expect very much benefit as the stock fans are fairly powerful to begin with. upgrading. Z09b4u. 3333 posts · joined 2015. #5 · may 3, 2020 (edited) normally when we want to check that the fans and the pcm work we unplug the temperature sensor and the pcm defaults to fans on for safety. a broken wire would also force the fans to run, so you could unplug the temperature sender and the pcm and test the wire between them.
Cooling Fan Diagram Chevy Impala Ss Forum Reconnect the h2opump temp sensor after about 30secs. if only one fan turns on, switch the fan relays seating positions. disconnect the h2opump temp sensor, and describe what happens this time. click to expand you are pretty spot on. i have two fans. the a c fan works fine. it's the cooling fan that's the problem. Q. qdawg discussion starter. 1 post · joined 2010. #1 · aug 13, 2010. i just replaced the heads on my 96 impala ss for a set of corvette factory aluminum heads. the engine runs great, lots of power. however, when i sit at idle the temperature gauge climbs to one tick mark below red before the passenger side fan comes on. The fans will stay on for approximately 3 minutes. the bcm will request high speed cooling fan operation from the pcm under the following conditions: •engine coolant temperature reaches 110°c (230°f). •a c refrigerant pressure exceeds 1655 kpa (240 psi). •when certain dtcs set. There are 2 cooling fan relays in the fuse block under the hood. trace the wires and see where they spliced into it, you should be able to undo what was done. sometimes they also do it if they do not want to replace a sensor that may be bad that controls them. :beer:.
Radiator Upgrades Chevy Impala Ss Forum The fans will stay on for approximately 3 minutes. the bcm will request high speed cooling fan operation from the pcm under the following conditions: •engine coolant temperature reaches 110°c (230°f). •a c refrigerant pressure exceeds 1655 kpa (240 psi). •when certain dtcs set. There are 2 cooling fan relays in the fuse block under the hood. trace the wires and see where they spliced into it, you should be able to undo what was done. sometimes they also do it if they do not want to replace a sensor that may be bad that controls them. :beer:. I need help!!! i got rid of my clutch fan on my 96 caprice classic 5.7 lt1 n went duels electric fans. but they keep blowin the relay. i unplugged one and was running just one fan, but it also blew the relay. all wiring is good, fuses are good. the fans come on as soon as i start my car, but they never turn off. can anybody help me. 15 8498 right hand engine cooling fan motor $75.79 15 8429 left hand engine cooling fan motor $82.79 chevy impala ss forum. 1.9m posts 45.3k members since.
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