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AC goes on, engine starts shaking violently
Topic Started: Apr 17 2011, 03:06 PM (869 Views)
austineveringham
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When i turn the AC on in my metro, the engine freaks out. i had the hood open yesterday and the engine looked like it was about to jump out. is this a sign of a vacuum leak?
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Murf 59
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Does it only do that at idle or will it smooth out when the engine is running at a higher rpm?
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mcmancuso
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Its probably because the extra load is lowering the RPM's these engines shake a lot at low RPM's. There's a system that's supposed to increase the idle when the AC comes on to counter the load, yours may not be working or working correctly. Its this thing:
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(not all cars with AC seem to have these, but all factory AC cars should)
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