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A/c and Heater '83 300SD
I've seen this question on here before. But I never saw the fix.
I turn on my AC or heater on low fan speed it works just fine. But if your hot or cold and turn the fan to high speed it runs fine for abuot three mins.Then it's off for about 1 min. on for 5 secs. off for 5 secs. it dose this for about 5 mins. then it will run for about 1 1/2 mins. and starts this all over again. It also dose a screeching sound under the dash on and off too with the no and off. Is there a hight limit on the fan or somthing?
Thank for any help the weather is starting to heat up
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Hello Kaia, How are you? Thank you the shocks arrived here past one month! And I like it very much! It gives on my car the original drive firm and very good to drive! Very quality shocks! I am going to send some pictures to you of my car and one of shocks that I put myself. I see you Kaia, thank one more time my friend!Bye bye,
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83 300SD blower motor troubleshooting
From your description it sounds (screeching) as if you blower motor is going bad. It could be a combation of both worn out brushes and bad bearings. Of course there is no way we can know for sure by email.
Start by replacing the fuse first (even if it looks ok). If that does not make any difference we have three solutions.
Replace just the motor brushes CLICK HERE
Replace the motor with new Bosch CLICK HERE
Replace the entire blower motor assembly CLICK HERE