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The rear air condition fan comes on shortly after shutting off vehicle. Only when temptation selector is on and eventually drains battery?

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Water is leaking on the ground by the firewall

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Have you you been running the air conditioning? It is normal for water to drain from the EVAP housing when the air conditioning is on. Since the EVAP Core gets very cold moisture from the air will condense on it. Eventually enough water will build up and it will start to drain via the EVAP drain. Typically this is done through the firewall on the passenger side on many vehicles.

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The battery light comes on and eventually the car shuts down

When the battery light is on the alternator is not charging. whith no charge going in there is a drain on the battery and eventually the battery voltage is too low to work the cpu and coils so the engine stops. Check for condition of drive belt and retension if necessary. Have the alternator check for charging

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Check engine light on its the air ambient temperature sensor

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Sep 06, 2011 | 2005 Dodge Stratus

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Air condition stays on when car is off draining battery

If you mean the interior fan stays on then there's probably a relay for the fan or a fan module that is bad or stuck at the contacts, causing a short to ground that shouldn't exist after turning the ignition off.

Oct 17, 2010 | 2002 Mitsubishi Lancer

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Fan doesn't run while in idle and begins to over heat until I start driving agin then it cools back down to normal. Also the fan runs when engine is off and drains the battery.

The fan is only supposed to come on when there is excess heat .. in normal driving conditions it doesn't start. When you start your car in the morning the fan won't come on because the engine is cold.

With a hot engine - and it depends how hot the engine is - the fan will only kick in to prevent overheating. In heavy slow moving traffic or a traffic jam, the fan will kick in if needed.

The air flow through the radiator is usually sufficient -in normal driving conditions - to cool the engine.

When you park up and the car has a hot engine, the fan will kick in. This is perfectly normal. It is caused by a surge of hot coolant triggering the fan sensor. Perfectly normal.

The fan then should cut out after a while .. maybe 2-3 minutes at the most. If the fan runs continuously that suggests a fault in the temperature sensor switch.

Next time - wait by the car and see how long it takes for the fan to quit after you have parked up. It should stop of its own accord after a couple of minutes.

If the fan cuts off after a short while, and your battery is becoming drained, that's probably a battery or alternator fault.

Remember: when you start the car the fan won't kick in at idle speed because the engine is COLD, and there is no reason for the fan to start up ..
The fan WILL kick in for a couple of minutes after you have parked the vehicle and the engine is hot

Aug 14, 2010 | 1999 Jeep Grand Cherokee

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94 jeep cherokee: check engine light code 35

No its not true,the cooling fan comes on when the coolant temp reaches a certain point it closes the switch in the temp sensor wich in turn closes the relay and powers the cooling fan,the reason it comes on with the A/C is that it's wired to bypass the temp sensor and associated relay because the A/C compressor forces the motor to work harder and the coolant temp to rise significantly faster,the relay needs to be replaced or you will overheat the motor and possibly cause serious damage.

May 30, 2009 | 1994 Jeep Cherokee

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My air conditioning wont turn off

If its automatic climate control it could be a host of faults. If its manual A/C the selector switch is bad

May 22, 2009 | 1995 Oldsmobile Aurora

1 Answer

Fan will not shut off

there is a cooling fan relay or module located under the passenger headlight .the light must come out.the module is flat about 3x3 " hold in by two 5.5mm. bolts .very common problem

Jan 25, 2009 | 1999 Jeep Grand Cherokee

1 Answer

1999 grand cherokee jeep -coolant fan will not shut off

Hi Jeepers,

The fan will occassionally continue to run for five or ten minutes after the vehicle shuts down. This is normal.

What is not normal is if it keeps running until the battery drains.

Does it just keep running?
If it eventually shuts off, how long does it take?
Did this just start happening?
The two days you mentioned, were they short trips, opposed to the third day?

If you would comment me back with some more details, it would help me help you.


Jan 12, 2009 | 1999 Jeep Grand Cherokee

3 Answers

98 dodge caravan problems

I had the same issue with my dodge caravan and after several attempts by the dealer to fix it, it turned out to be a broken wire. They replaced the relay and it would work for a while and then go blank again. Have the wires checked thoroughly.

Sep 10, 2008 | 1998 Dodge Caravan

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