having a problem with my primary fan coming on...help me
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Car: 90 Formula, 02 ws6
Engine: 305 tpi, ls1
Transmission: 700r4, t-56
Axle/Gears: stock posi 2.73, 12 bolt with 4.11s
having a problem with my primary fan coming on...help me
well heres the deal
when the car gets up to temp for the ecm to turn the main fan on it does not
the relay is good and when i jump it out manually the fan kicks on so i know i have power and the fan works
when i put on the ac the fan comes on just fine so i know the ecm is telling it to turn on so the wire going to the computer is good. the secondary fan does not come on(because theres not enough pressure in the ac system though)
i changed the coolant temp sensor thinking that it was bad and thats why the fan was not working...not the case. i have 5 volts coming from the ecm on the yellow leg and i tested the contiuity of the black ground wire and that tested fine as well so im at a loss on what the hell is wrong
anyone got some input...
thanks
joe
when the car gets up to temp for the ecm to turn the main fan on it does not
the relay is good and when i jump it out manually the fan kicks on so i know i have power and the fan works
when i put on the ac the fan comes on just fine so i know the ecm is telling it to turn on so the wire going to the computer is good. the secondary fan does not come on(because theres not enough pressure in the ac system though)
i changed the coolant temp sensor thinking that it was bad and thats why the fan was not working...not the case. i have 5 volts coming from the ecm on the yellow leg and i tested the contiuity of the black ground wire and that tested fine as well so im at a loss on what the hell is wrong
anyone got some input...
thanks
joe
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Car: 1987 IROC-Z Camaro
Engine: L98 5.7L TPI
Transmission: 700-R4
Axle/Gears: 3.27 BW
Re: having a problem with my primary fan coming on...help me
Wire going from ECM to fan relay have continuity? I think the AC grounds out the wire early. What vehicle is this in? IIRC, only the 87 Dual Fans had the primary come on for A/C, 88+ it was the secondary only.
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eightsixseven
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08-14-2015 03:09 PM