Help.... re constantly running ac compressors.

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Sorcerer33
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Joined: Wed Mar 25, 2026 7:19 pm

Help.... re constantly running ac compressors.

Post by Sorcerer33 »

Hi All,

My question is regarding constantly running ac compressors. My mechanic is coming to install a new AC compressor and told me that he will add oil (110cc PAG) and I would be ok to drive to the local garage to get the system refilled with refrigerant. Everything I have read says not to run the compressor and to bypass it with a shorter belt, as driving a few km to get it regassed may damage the compressor.

I would appreciate some input form the knowledge on this forum as I have zero experience of AC systems.

Would I be ok adding R123 from a re gas kit to get the car to have it properly vacuum emptied and regassed ?????

TIA !
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Cusser
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Re: Help.... re constantly running ac compressors.

Post by Cusser »

Easy options:
1. Turn OFF the HVAC button before starting the engine.

2. Unplug the harness to the compressor

3. Remove the fuse for the compressor

It's OK to just let the compressor's pulley freewheel. If somehow your pulley is locked up to the compressor drive plate, you'd have to remove the belt if it has a separate belt. Do not add refrigerant for this issue.

If you mean "constantly ruining AC compressors", likely you have schmutz in the system from a previously malfunctioning compressor.
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Tim
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Re: Help.... re constantly running ac compressors.

Post by Tim »

Cusser wrote: Fri Apr 03, 2026 6:08 am Easy options:
1. Turn OFF the HVAC button before starting the engine.

2. Unplug the harness to the compressor

3. Remove the fuse for the compressor

It's OK to just let the compressor's pulley freewheel. If somehow your pulley is locked up to the compressor drive plate, you'd have to remove the belt if it has a separate belt. Do not add refrigerant for this issue.

If you mean "constantly ruining AC compressors", likely you have schmutz in the system from a previously malfunctioning compressor.
Yep, just don't run the a/c w/o refrigerant. The belt riding on the pulley is normal operation w/o turning the a/c on, no harm.
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