Engine surging during idle

2004 MAZDA MPV
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MISHACDL
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Front wheel drive automatic.

I have a van that has the check engine light on and is surging during idle. What this means is that as I sit at a stop light it feels as if my car is trying to surge forward and creates the feeling that I am pushing on and off the brake (to passengers, this is what it feels like).
Aug 8, 2010 at 7:03 PM
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RASMATAZ
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This sounds like you have a vacuum leak somewhere in the engine. Here is a guide to help you find the problem.:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please let us know what happens.

Cheers
Aug 10, 2010 at 5:09 AM
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EGINGER
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I had this problem and found out the air intake tube has a crack in it. Once I replaced it everything works good again.
May 11, 2018 at 11:27 AM
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