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Discussion Starter · #1 ·
Recently I noticed that my engine squirms or vibrate briefly at idle with A/C on when I stopped at the light. I was afraid that the engine may stall, so I turn off A/C and it's better. Looks like the idle speed is a little low. What do I need to check? Do I need fuel injector cleaning? I mean, taking apart the injectors and manually cleaning them. I haven't done it for a long time.
 

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Discussion Starter · #5 ·
What about throttle body cleansing? The Hyundai techinfo website states that it's not necessary to clean the throttle body because carbon deposit doesn't affect the engine performance. What do you think?
 

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Discussion Starter · #11 · (Edited)
What do you think of pouring Seafoam into a vacuum line to clean fuel injectors? Does it really work? It is hard to believe that injecting something into a vacuum line can do anything that bypasses fuel injectors.
 

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The low rpm's and loss of power is normal. If your car is in worst shape the engine might even chirp when idling at stop lights with ac on especially the higher you turn the speed of the fan.
 
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