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#1
05-05-2011, 02:21 PM
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GTP Temp sensors?
2005/GTP/140K miles
Temp guage works, but the electric fans don't. Doe's anyone know were the temp sensors for the electric fans are located? Note- If I disconnect the temp sensor going to the guage near the thermostat housing, both coolant fans turn on! 1) ECT sensor for engine Temp + PCM 2) Coolant Temp sensor for gauage. If the guage and temp sending unit works don't fix it, the ECT sensor is probably bad. Last edited by danielsatur; 05-05-2011 at 07:08 PM. Reason: Spelling 
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#2
05-05-2011, 08:37 PM
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Re: GTP Temps sensors?
How many wires are on the harness of the ECT you disconnected? If there are 3 then that's the same sensor used for the PCM and the instrument cluster.
Do you have any DTC's? Maybe the wiring between the ECT and the PCM is damaged... Oscar.
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1995 Lincoln Town Car 4.6 Signature 1997 Pontiac Grand Prix GT 3.8 2000 Ford Windstar SE 3.8
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danielsatur (05-07-2011)
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#3
05-07-2011, 08:27 AM
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Re: GTP Temps sensors?
The PCM detected the disconnect of the coolant temp guage sensor, trough a code, and told both fans to turn on High.
We replaced the upper/lower heater coolant elbows, and noticed the fans weren't working!
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#4
05-07-2011, 09:22 AM
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Re: GTP Temps sensors?
did you make sure it is not a relay. switch it out with another of the same from a different source and see if it come on. replace the coolant temp sensor easy and it is about 14 bucks. if you have a way to scan the car look at the temp readings, if it is reading an odd number than it is bad. i've had some read in the negative and way high.
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2004 GRAND PRIX GTP COMP G. VIN 4 : OVERKILL CUSTOM PCM, WIZAIR CAI, ZZP TRAILING ARMS, W BODY STORE LATERAL ARMS, ALL POLY/SOLID MOUNTS, STB F&R, ZZP RACE TRANS, ALT REWIRE & VOLTAGE BSTR, 180 STAT, NGK TR6, MPS with 3.4 PULLEY, PACESETTER HEADERS, 1.8 ROLLER ROCKERS, FP REWIRE,ZZP COILS/WIRES, TB SPACER, D&S ROTORS, INTERCEPTOR SCAN GAUGE, CUSTOM STAINLESS 2.5 INCH CAT BACK EXHAUST. 2004 Honda Odyssey EX-L 
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danielsatur (05-28-2011)
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