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2002 Beetle with 2.0 purchased last week. Car would only go 15 mph max. Had it towed to my mechanic for tests. VW has said it was the throttle body. Mechanic put in a new throttle body and flashed the computer. Took it for a test drive and ran fine. Next time it would not exceed 15 mph again, and stalls at idle. VW said the computer was not relearning as it should be and it needed to be flashed by them. Towed it to VW and their super-duper flash did not work either, and now there was no signal from the throttle body. They were willing to completely take apart the dash for $750 to explore. So I had it towed home. It idles for about 30 seconds now and shuts down.

Any ideas anyone?
 

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Oh, boy, kinda sounds like they left you with a broken mess! <img src="http://newbeetle.org/forums/images/smilies/frown.gif" border="0" alt="" title="Frown" class="inlineimg" />

I would start with scannig the car with a vw scan tool; like vcds and see what trouble codes, are coming up.

The car only running at 15 mph; sounds like, the car went into "limp mode", which kicks on when a major malfunction issue crops up and this mode, is to protect the engine from getting damaged.

After the vw dealer work/"repairs" that has been done; it is unclear, what the "flashes" have been done or what that exactly means.

Based upon what i am hearing what rhey did; it sounds like rhe throttle body, is not being allowed ti gi theiugh the alignment/learning process.

One would need to start from the basics, check trouble codes and see if you can narrow down the problem. This may take some time and effort on your part; to untangle the problem and detailed detective work, to find the source of the issue (plus keeping your eyes open, to anything that may have been done by the techs; in a attempt to figure out what was going on or anything to fix the car).

Let us know, how you want to proceed with troubleshooting and repairs; we can go from there.
 
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