Audi A4 1.8t 2002 shake when press gas - Audi Forum - Audi Forums for the A4, S4, TT, A3, A6 and more!

02-02-2012 | 08:28 PM

totallycute90

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Joined: Feb 2012

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From: DFW, TX

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Audi A4 1.8t 2002 shake when press gas

Hey everyone,

I have a A4 1. 8 2002 with 135k miles, currently when i start the car and press gas it shake. then it stop and drive ok like usual. it just happen when i start to press gas first time. the engine light is on 2. Autozone found code P0420... whats wrong with it?

Should i just take it to regular German car mechanic shop or Audi ?

thanks ^^

03-08-2012 | 02:35 PM

captainglenn

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Joined: Jun 2011

Posts: 19

From: Richmond hill, Ontario

Re: Audi A4 1.8t 2002 shake when press gas

It's probably a misfire, I had that problem in my 1.8t AND my 2.8. I changed my spark plugs, the spark plug wires and coilpack and the problem went away.

03-11-2012 | 10:47 PM

ba2489

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Joined: Oct 2008

Posts: 14

From: Toronto

Re: Audi A4 1.8t 2002 shake when press gas

i would also check your throttle alignment. If its only when you first start the car, i would think it could be that. you should do the throttle trick.

03-20-2012 | 03:02 PM

The Snowdog

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Joined: Oct 2008

Posts: 31

From: Markham, ON

Re: Audi A4 1.8t 2002 shake when press gas

Quote:

Originally Posted by captainglenn

It's probably a misfire, I had that problem in my 1.8t AND my 2.8. I changed my spark plugs, the spark plug wires and coilpack and the problem went away.

I'm having the same problem. I'll try the spark plug / wire change and see what happens.