Help--Engine Surge

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Apr 20, 2004 | 07:14 PM

Spacecoast

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Drifting

Joined: Oct 2002

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From: Titusville FL

Help--Engine Surge

Hey Everybody,

I was hoping some of you tech wizards may have an idea or two on a little problem I have noticed. I have a 99 A4 and have noticed that there seems to be an intermittent engine surge when I am at a little over 2,000 RPM (going around 65 - 75 mph). The surge doesn't seem consistent, however it does seems to show up more when it is warm outside. Today must have been the worst it has been. I checked my airbox and all connections seem to be tight around the MAF and throttle body. Any suggestions on what it could be? I checked my codes, but nothing came up that should cause this problem. I am thinking that it is time to take it to the shop, but would like to hear what the forum may think it is so I go in there informed.

Thanks in advance everybody :seeya

Apr 20, 2004 | 07:34 PM

Melting Slicks

Joined: Nov 1999

Posts: 2,337

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From: MI

Cruise-In VI Veteran

Re: Help--Engine Surge (Spacecoast)

Hello, The engine needs air, spark, and fuel to run. Seems that you looked at the air (intake system).....Was the fuel filter ever changed?

Apr 20, 2004 | 08:00 PM

Spacecoast

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Drifting

Joined: Oct 2002

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From: Titusville FL

Re: Help--Engine Surge (69)

Quote:

Hello, The engine needs air, spark, and fuel to run. Seems that you looked at the air (intake system).....Was the fuel filter ever changed?

I think it is the original fuel filter so that may be a possibility.

Apr 20, 2004 | 08:41 PM

Spacecoast

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Drifting

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From: Titusville FL

Re: Help--Engine Surge (Spacecoast)

I am hoping that it is something to do with fuel/air/spark. However has anybody ever hear of an engine surge caused by a bad torque converter or something along those lines. The car accelerates like a beast so I figured the transmission is fine, but want to know if this could be a cause as well.

Apr 20, 2004 | 08:42 PM

Buckmaster

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From: Just trying to make it through each day.

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St. Jude Donor '03-'04

Re: Help--Engine Surge (Spacecoast)

Surging is usally an air related issue. Bad connection somewhere...........Check and tighten all connections.

Apr 20, 2004 | 10:11 PM

Spacecoast

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Drifting

Joined: Oct 2002

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From: Titusville FL

Re: Help--Engine Surge (Buckmaster)

Thanks for the input Buckmaster. :thumbs: Makes me feel a bit better.

As I was checking for any possible leaks, I tried to start my car and guess what??? The battery was dead. I took it out in the nick of time since the positive terminal started to leak as I unscrewed the terminal out. Damn lucky on that one. Just curious, but could a dying battery cause air/fuel mixture issues if the computers weren't getting enough juice?

Thanks again for all of your input :cheers: