North American Turbocoupe Organization

Primary Fan Problem
Golden Bird Offline
I have A 87 Turbo Tbird. putting the engine back in the car it starts but the primary fan won't come on. I checked the motor and the fan works I jumped the pink wire to ground and the fan comes on. The sender switch was replaced with the rebuild does anybody have any ideas
Golden Bird

TurboE Offline
Posting Freak
Well i just have to reply because having an overheating or gauge issue after a fresh rebuild.. does the primary fan come on with the ac on? that should point you to particular IRCM or ECT.
-88 TC Black
5spd, Precision SC50 T3/T4, QH/SD Tune, Gillis, AFPR, 255FP, WB O2, K&N, Ported E6, 3" DP, ATR 2.5" Duals, 3:73 Rear, Konis, Eibachs, 18" Voxx Wheels, X Drilled Rotors.
-06 G35 Coupe Diamond Graphite
-97 Pathfinder

Golden Bird Offline
no the fan doesn't come on with the air only if you by pass and jump the pink wire in the IRCM

Jeff K Offline
I think you are confused about the fans. The upper fan, pass side, is the primary fan, and the lower, driver side one is the secondary fan. It is pretty rare for the secondary fan to ever run unless outside temp is VERY hot, or you have a cooling system problem.

87-88 fans are not controlled by a "sensor switch". PCM uses coolant temp input from the ECT to control the fans.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

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