Help with a 2007 Grand Marquis
Ok I have a 2007 Mercury Grand Marquis it was waiting on line at a drive thru and my car overheated and the engine light came on. I checked the code it was P1299. I called my mechanic he came over and he replaced the thermostat because it was stuck opened and the sensor that's behind the alternator which the code refers to. The engine light and code was gone but then the cooling fan wouldn't come on sonow he replaced the fan motor and module as soon as he attached everything the fan came on without the car turned on. He checked the fuses and in the process of looking for shorts in wiring he had to disconnect the fan because it won't stop running. Can you give me anything else he can possibly check he thinks it could be the PCM but wants to make sure it's not something else first.
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Any codes at this time? The fan probably caused your overheating. A stuck open thermostat will not. I believe you either have a short in the fan wiring or a bad (stuck) fan relay. PCM is possible but the least likely cause for your fan problem.
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Originally Posted by raski
(Post 24344)
Any codes at this time? The fan probably caused your overheating. A stuck open thermostat will not. I believe you either have a short in the fan wiring or a bad (stuck) fan relay. PCM is possible but the least likely cause for your fan problem.
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Overheating
From what you say, it appears that you need a new mechanic.
Your first clue was that a "stuck open" thermostat will NOT cause overheating. https://cimg5.ibsrv.net/gimg/www.mer...4410eddba9.jpg Classic Style -- Relaxed Comfort -- Modern Performance. |
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