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Re: fan on intake will not shut off
There is a relay and yes it is controlled by a intake temp sensor, they will run a long time, up to 1 hour on a hot day, have you had the battery tested, maybe it is getting weak, but if that's not the case why not just disconnect the fan motor, that is what I did, had a similar problem.
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if you have a certain model of stratus there is a fan under the intake on the 2.4 engine. this fan blows air into the exhaust for emissions purposes. the circuit on these fans have a problem with not shutting off. i believe the dodge dealer installs a resister in this circuit to make it shut off. it can make your battery go dead if it dosnt shut off
this fan is meant to' run on' after turning ignition off to cool down the fuel injectors etc so the fuel does'nt evaporate whilst the engine cools down .Two things here 1. Does the fan NEVER stop, it may run for 5-10 mins at most , if it runs longer than this then the timer relay may need replacing .2 If the fan goes off and then your battery is flat later i'd say it was the condition of the battery at issue as may not be holding the charge , so you can get the battery condition checked easily , if it is the battery at fault get the alternator charge rate checked as well as this may be the cause of poor battery condition .Hope that helps
Ambient air temperature sensor, monitors the temperature around the radiator even when vehicle is off. Uses this information to determine whether the cooling fan needs to run after vehicle is shut off. When sensor is defective, can cause fan to run until battery dies if vehicle is off or may not activate at all, creating an overheat condition.
In my 2001 Dodge Stratus ES sedan (2.7L V6), the EGR has shiny piping that runs into the side of the black plastic intake manifold on top of the engine. The other end runs down beside the engine heads and routes into the rear exhaust manifold.
Make sure the radiator cooling fans are both coming on when the A/C is turned on. This cools down the condenser which is mounted in front of the radiator. Dodge has had issues with the fan controls for years. There is a fan control module which turns the fans on when the a/c is activated or the engine temp reaches a prescribed level. I would replace the thermostat as well if the vehicle has been previously overheated or has high mileage.