Rpm drops to 250 with a\c on when coming to a stop
#1
Cruisin'
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Join Date: Dec 2015
Location: San Antonio , TX
Age: 59
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Rpm drops to 250 with a\c on when coming to a stop
As title states, with a\c on will be driving with say rpms around 2500 , when slowing down, to a stop rpms will drop to 250, engine starts to shake like it wants to die, for say a second then will climb back up to 750 rpms ... only with a\c on... any ideas??
#4
Senior Moderator
how's your alternator, battery, idle air control valve?
#5
Cruisin'
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have not checked battery/ alternator, plan on cleaning iacv...
seems to happen when there is a load on engine, when the compressor kicks in , now that I think about it...
seems to happen when there is a load on engine, when the compressor kicks in , now that I think about it...
#6
Senior Moderator
yup hence the battery/ alternator check ![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
also check your all your grounds.
![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
also check your all your grounds.
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RVARGAS64 (05-25-2016)
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#8
clean idle air control valve. that will fix the issue if not, it will need to be replaced
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