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Old 01-04-2010, 02:38 PM
captaindamnit's Avatar
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Join Date: Jun 2009
Location: Iowa City, IOWA
Posts: 380
Default fan, heater, a/c stopped working

Here is my problem... This morning I went to meat a friend for lunch. I arrived early so I decided to wait in my car rather than brave the -10F temp. While I was calmly sitting there, the engine started to bog down and started to make the car rock slightly back and forth. I thought it was just a little sputter so I just let it go. 5 seconds later the Check Engine light started flashing and I watched it go solid. Not knowing what to do, I turned my car off. I let it sit for about 5 mins while I waited then started it. Everything ran fine but my check engine light was on, so I shut it off, ate, and went to see if I could get it diagnosed. When I got to the shop, they told me it was going to be $44 for a diagnostic of the light, so I left. I know Advanced Auto and some Auto Zones do it free. So as I left the shop the light turned off. Woo Hoo! So I drove home. On my way I had my heated all the way up, like normal. Then all of a sudden I heard a click and it just stopped... It didnt like coast to a stop, it seemed like it got jammed or something. So I tried the A/C, turned it up and down, tried re starting my car, and even checked the fuses. Nothing works and the fuse seems fine. Its supposed to be a high of 5F for the next week so I would really like to get this fixed... Any one know of some trouble shooting? Dont really have the cash to get it fixed professionally.

Sorry for the long one!
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Old 01-04-2010, 05:42 PM
seawolf18's Avatar
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Join Date: Nov 2009
Location: South Dakota
Posts: 166

The flashing check engine light can mean your car is misfiring. As for the heater fan not working. There is a resister pack under the dash on the passenger side that controls the fan speeds. When it goes bad the fan will not work. A similar thing happened to my friends 02 chevy pickup. Its a black box with an electrical connector plugged into it. I think the part for the truck was around $25-$30, but you have to take the underside dash cover off and crawl around under there to get it it.

You said you checked all the fuses for it. Some times a fuse looks good, but actually it is not. Find the fuse for the heater fan, and swap it around with one of equal value. If that doesn't work, try running a jumper wire from the battery to the heater motor under the hood. If the fan it still good it will spin. If it does spin, I would learn toward the resister pack. If it doesn't, then I would suspect a bad blower motor.
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Old 01-04-2010, 06:08 PM
captaindamnit's Avatar
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Join Date: Jun 2009
Location: Iowa City, IOWA
Posts: 380

Hey I forgot that I had a blower fuse on the passenger door side. It had blown so I replaced it. I turned the fan on it would not spin. I turned it up to 5 and it blew the fuse again. So now I said screw it and its down in the shop. They will look at it overnight and call me with the verdict... Any of your methods u mentioned sounds expensive either way, but thanks for the heads up.
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