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It'd be helpful if you gave us more information, specifically the make, model & mileage of the car.
That said, I wouldn't be surprised if your alternator isn't pumping out as much charge as it should be - enough to keep your battery from going dry, but not enough to keep all your electrical stuff running strong when the engine idles.
- Any other problems with the car, like dead battery once in awhile?
- How much is the blower slowing and accelerating? A little, or a LOT?
95 chevy cavalier with 84,000 miles.
Always starts right up.
Sometimes blower goes down a lot but so far comes back up.
I just had a new compressor and last year a new vaporizer.
Is there a relay or something that it could be?
Last year it would only blow on one speed and the mechanic changed something simple and it workid on all speeds but he spoke another language and I could not understand what he told me he did.
Thanks everybody for trying to help.
I am in traffic for 1 1/2 hours a day, spent so much money on this car but no money to get a new one.
I just can't afford for a mechanic to lie to me and don't know what to do.
Thank you again.
Sounds like a low voltage problem to me at idle iinstead of a bad blower motor.
When the altenator is turning slower at idle it isn't putting out enough to run everything the way it should.
An alternator has 3 diodes in it. If one goes bad but two are still working it will keep the battery charged if the vehicle is run on a daily basis but it won't carry the load at idle.
The alternator should show a charging rate of 13.7 volts. (give or take a couple tenths)
If it's above 14 it's too high. If its below 13.4 or so it is too low.
You can check this yourself with a volt meter. If the voltmeter shows a charge rate of 12 volts people think the alt is ok because it is a 12 volt system. Not so.
The alt needs to charge at a rate of 13.7 to keep the battery charged and run the accessories.
Almost all altenators contain built in voltage regulators unlike like the separate ones that was common years ago. The factory stantard is 13.7 volts.
Have the alt tested. I would almost bet it has one diode out.
Is there a relay or something that it could be?
Last year it would only blow on one speed and the mechanic changed something simple and it workid on all speeds but he spoke another language and I could not understand what he told me he did.
Thanks everybody for trying to help.
I am in traffic for 1 1/2 hours a day, spent so much money on this car but no money to get a new one.
I just can't afford for a mechanic to lie to me and don't know what to do.
Thank you again.
Only working on one speed has nothing to do with your problem now.
A high/low speed relay was probably changed. That was a simple fix.
It has nothing to do with the blower slowing down at idle.
You might not have understood what he said he did but he found a simple problem and fixed it. He could have ripped you off if he was dishonest. A lot of shops do.
Sounds like a low voltage problem to me at idle iinstead of a bad blower motor.
When the altenator is turning slower at idle it isn't putting out enough to run everything the way it should.
An alternator has 3 diodes in it. If one goes bad but two are still working it will keep the battery charged if the vehicle is run on a daily basis but it won't carry the load at idle.
The alternator should show a charging rate of 13.7 volts. (give or take a couple tenths)
If it's above 14 it's too high. If its below 13.4 or so it is too low.
You can check this yourself with a volt meter. If the voltmeter shows a charge rate of 12 volts people think the alt is ok because it is a 12 volt system. Not so.
The alt needs to charge at a rate of 13.7 to keep the battery charged and run the accessories.
Almost all altenators contain built in voltage regulators unlike like the separate ones that was common years ago. The factory stantard is 13.7 volts.
Have the alt tested. I would almost bet it has one diode out.
Does that mean I should get a new alternator or can I get by on this one if that is the problem?
I can survive if it blows while I am driving but will even that stop soon?
Thanks
Only working on one speed has nothing to do with your problem now.
A high/low speed relay was probably changed. That was a simple fix.
It has nothing to do with the blower slowing down at idle.
You might not have understood what he said he did but he found a simple problem and fixed it. He could have ripped you off if he was dishonest. A lot of shops do.
I took it there and had work done for another problem.
At that time the windshield wipers were working fine but would not stop down in the correct position. They would stop up on the windshield.
So anyway, after they had done 300.00 worth of work, they called and said for an extra 200.00, they would fix the windshield problem and the blower that would only blow on one speed. I saw the package that was left in the car, thats how I knew it was a relay.
So, did they do the 2 things at a fair price or did they rip me off?
I just want a mechanic that I can trust because I am a women and have been ripped off so many times that I should write a book.
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