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Re: 99 towncar a/c
Kitt1993, I believe he meant that the A/C still blows hot air, not that the engine is running too hot. If this is infact what he meant than changing the engine thermostats has no effect on the HVAC system. The only sensors that related to the EATC module are the sun sensor, the inside air temperature sensor, and the outside air temperature sensor (located in front of the A/C condenser).
Since the blower motor is not working at all, I don't think it is the resistor. IIRC, if the resister goes, the blower motor either is off or at max speed and can not be controlled anywhere in the middle. Best way to proceed would be to check the voltage to the blower motor. If there is a voltage and it varies with fan speed settings, than the blower motor needs replaced.
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2000 Mercury Grand Marquis LS - 119k / 14.89s @ 92.11MPH [ pictures | videos ]
> Dual Flowmaster Delta 40s / J-Mod / PI Intake Manifold & Cams / Marauder Air Box & 80mm MAF / 3.55 Trac-Lok
> Bumper Tuck / Steeda UD Pulleys / CVPI Zip Tube / Ported & Polished Plenum / BBK 70mm TB
> BOC 93 Octane Tune / Headlight Relay Upgrade / 17mm rear stabilizer bar / Heinous Aluminum Billet Rear Control Arms
> CVPI aluminum driveshaft
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