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HELP: Sudden RPM Drop (video)

I asked the G community but they werent too helpful... It just started yesterday: While accelerating my G acts completely normal, when i let off the gas it quickly drops

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Old 02-03-2013, 06:02 PM   #1 (permalink)
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Default HELP: Sudden RPM Drop (video)

I asked the G community but they werent too helpful...

It just started yesterday:

While accelerating my G acts completely normal, when i let off the gas it quickly drops to 500 (vehicle shudders) then the RPMs rise back above 1k. It wouldn't bother me but every so often it drops just too low and the vehicle feels like she wants to shut off .


In the video it isnt dropping as quickly as it was yesterday, but still fast (dont mind the tire light. I had a nail and havent gotten around to doing the warning reset diy)

http://www.youtube.com/watch?v=w0ao-HN6Qnw&f
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Old 02-03-2013, 06:09 PM   #2 (permalink)
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So, you're saying the bounce the needle does isn't you?

Are you M/T?
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Old 02-03-2013, 06:09 PM   #3 (permalink)
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If you're A/T, go to your tuner
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Old 02-03-2013, 06:25 PM   #4 (permalink)
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I would guess your are either going to lean or too rich on 0 TP, then it takes a second or so for the engine to dial back in the afrs. If it started happening out of the blue I would possibly look towards a vacuum leak.
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Old 02-03-2013, 07:26 PM   #5 (permalink)
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Thanks guys! yea its an AT, I will look for a vacuum leak when I get off work
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Old 02-03-2013, 08:32 PM   #6 (permalink)
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If you have a propane torch turn it on but dont light it, hover it around the engine. If there is a vacuum leak it will suck in the propane and the idle will increase. It will help you pin point where it is.

Goodluck!
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Old 02-03-2013, 08:34 PM   #7 (permalink)
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I had the same issue before, its more than likely a vacuum leak. Good luck finding it!
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Old 02-03-2013, 08:59 PM   #8 (permalink)
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Thanks Aznsensanzn (not gonna lie, had to double check my spelling on your username twice lol)
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