I tried to remove the the heater core, i could not so replaced evrything as the way it was and double checked it and it still will not start, i have removed and replaced the battery terminals with no result. i am wondering if it some kind of security feature that is preventing it from starting.
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Re: 2003 mitsubishi galant es will not start
If you have a computer alarm on your car it might be the problem. Otherwise, have someone watch the engine fan belt as you try to start your car, to see if the engine is actually turning over or not moving at all. if it's not moving, then if you have a cap and rotor on the car remove the cap (rmembering how to put it back right) and have someone watch to see if the rotor is turning as you try to start your car, if it isn't, your timing belt may have gone out. Just one thing else to check that I can think of.
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put a radiator flush in your expansion bottle .run it for about 20 miles. then drain and refill with 50/50 mix of anti freeze that will clean both core of your radiator and the heater core of dirt and rust. then bleed the air out. by turning the heater on full .run the engine with the expansion bottle cap off till you start to feel hot water at the hoses .then refit the cap.
that happened to me the heater core went out ive read alot of different things about 03 galants most of them have the same problem it started with a grinding noise turning the temp contol, its actually the heater control motor value it causes the heater core to go out
just follow the top radiator hose to where it attaches to the engine. There should be a housing held to the engine by 3 bolts. On the v6 it's much easier to access if you remove the battery and the battery shelf before you start.
I would suggest double checking the heater core connection, make sure every thing is connected properly. check your t-stat make sure its not stuck open. Do so by feeling the upper hose, it should be a warm-hot feel, if its cool or cold replacing the t-stat would fix that problem.
There is an electric motor that turns heater core on and off. It's located under the dash to the left of the glove box. Some disassembly required. The part will cost about $120 to $180. part number is #MR958603.
There ia an actuator that controls the flap to change from hot to cold. You have to pull the bottom part of the dash and the whole blower motor housing. The part you are looking for is located just behind the radio and has an arm that goes into the heater core line. That is the piece you need. Its around $165 dollars and a dealer only part. And hope you have someone that can do it because mitsubishi charges over $500 in labor.