After sitting for a few hours my car starts easy but then bogs down and dies. Sometimes giving it a good rev will get it to idle normal other times this does nothing. Sometimes it takes a few seconds for it to be normal sometimes minutes. Once it works properly there's no problems unless i floor it. Through acceleration it will pull strong but once i get off the gas it feels like it wants to die again. Its a 2001 a4 1.8t qm

 

Trottle position sensor or mass air flow sensor , but if it pulls good only at idle does that more likely TPS

 

+1. Could also maybe be your MAP sensor.

 

Any more ideas? This has been making me crazy.

 

The only other things I can think of is maybe fuel wise (clogged injectors, fuel pump, fuel filter, FPR).

 

While snooping around under the hood I found this.





Could this be a problem? What is that?

 

I wasn't sure if the pictures uploaded in the previous post.

 

Ahh. That's your suction pump. The same thing happened to me with it coming apart like that. Just get some super glue around the inside seal and tape it closed for a day until the glue dries. I did that a year ago and it never came apart again. You might be told to buy a new one instead, but why do that if the new part is glued on anyway? That could be the possible problem since it's leaking vacuum air. See what happens after you fix it.

 

after you fix that vaccume leak, throw in a ko4 turbo, a chip, and some stiffer springs and maybe it wont feel like driving an anemic fork lift.

 

I put some tape around that section and waited till the morning when the problem is the worst. To my amazement it worked like new! Are there any other problems that could have been created from this piece being seperated?