1994 Nissan Altima 4 cyl Front Wheel Drive Automatic 208000 miles
Sir I've replaced coolant temp sensor, while the sensor is un plug my cooling fans come on is this normal or should I have to jump out the plug. While the harness plug is unplugged from coolant temp sensor it draws in the relays which the secondary side are normally open and the fans run. I've have jumped the relays out and the fans come on. What temp is the temp coolant sensor going to talk to the relays and turn on the fans? Is the coolant temp swith in a normally closed position and opens once coolant temp. Reaches___ degs. With all that said it seems like everthing is working until I run the engine to operating temp fans fail to engage and motor over heats, motor shuts down. The radiator is brand new. What sequence happens do I have it right, coolant temp talks to relays once the right temp is reached, relays kick in, fans come on. Bottom line is what am I'm doing wrong in analyzing this problem of fans not operating with engine running however trouble shooting them with the engine not running tells me it should work when engine is on and operating.
have the same problem?
Friday, April 23rd, 2010 AT 12:32 AM