Cooling question???
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,808
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Cooling question???
On my '84 would the same sensor that brings on the fan, be the same one that sends the coolant temp to the guage in the dash?
Reason why I aske is because, all I get on the dash is "Lo" for coolant temp. Also my fan will not come on at all. :confused:
Reason why I aske is because, all I get on the dash is "Lo" for coolant temp. Also my fan will not come on at all. :confused:
Advanced
Joined: May 2002
Posts: 87
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From: Chandler AZ
Re: Cooling question??? (mikes84vette)
Im not too sure about the fan except that the relay is on the drivers side firewall beside the battery, you might want to check it out. The coolant temp sensor for the gauge is on the passengers side of the engine between the rear 2 spark plugs. I just got finished replacing mine and my coolant temp display works great now. (It always showed "LO" before). It may have a broken wire or the sensor may be bad. You can test it by disconnecting the wire (it is a single wire with a push on connector) and connect it to ground. Turn the switch on or just start the car I cant remember which and your coolant temp gauge should read 300 if not look for a broken wire. If it reads 300 F then you need a new sensor. I got mine at autozone for about $7 . :seeya
Pro
Joined: Jul 2000
Posts: 508
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From: Vancouver WA
Re: Cooling question??? (js0308)
Mine also, read low until the fan kick on then displayed 300F (which was false) turned out my "new" coolant sensor on the passenger was faulty. My aux fan would kick on but it took a long time to turn the primary fan. Replace that sensor it should help.
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,808
Likes: 0
Re: Cooling question??? (87Beast)
I replaced the fan relay, nothing. I went straight to the the battery for the fan motor, nothing.
So now I guess I am down to replacing both fan motor and sensor.
Thanks for the help. :cheers:
So now I guess I am down to replacing both fan motor and sensor.
Thanks for the help. :cheers:
Pro
Joined: Jul 2000
Posts: 508
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From: Vancouver WA
Re: Cooling question??? (mikes84vette)
For right now replace the sensor only this might solve you fan problem also like it did me. A good way to check the fan is to jump the ALCL A & B terminals (both are top farthest right side) and turn the ignition to on (not the motor) and the fan should come on, if not then maybe the fan motor is kaput. Don't want you to waste your money.
Race Director
Joined: Aug 2002
Posts: 13,356
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From: tucson AZ
St. Jude Donor '04 & '05
Re: Cooling question??? (mikes84vette)
I have a 1984 crossfire..
Put a switch from mid america on pass. side head...stats the fan at 200
stops at 180.....works great...also had a special ecm prom installled and a 160 thermostat...
runs mostly at 200 to 180....works great
good luck... :D
Put a switch from mid america on pass. side head...stats the fan at 200
stops at 180.....works great...also had a special ecm prom installled and a 160 thermostat...
runs mostly at 200 to 180....works great
good luck... :D
