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Wolfgang, VW Master Technician
Category: VW
Satisfied Customers: 4585
Experience:  Senior VW Master Tech 15 yrs
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I have a 2002 vw jetta tdi ran fine last nite, now this

Customer Question

I have a 2002 vw jetta tdi ran fine last nite, now this morning it starts up fine, but when you shift into gear the motor lopes or surges: when you try to drive it surges puffs black smoke until you get it above 2000 rpm's
Submitted: 1 year ago.
Category: VW
Customer: replied 1 year ago.
I ck for codes and there isn't any
Expert:  Wolfgang replied 1 year ago.

Thanks for choosing Just Answer . I'm Wolfgang here to help!!
Below is my first answer or request for more information. If you do not understand it, or you need more information from me, or need me to go in more detail. Do not rate yet, just reply. Put yourself in my shoes, I can not see, smell, hear, feel or touch your car, nor do I know any history on it. So take into consideration I am doing my best based on what you tell me. Also understand fixing cars often requires sophisticated tools, that you may not own. So even if you can not do what is outlined in my answer, that does not mean my answer is wrong deserving to be rated negative.

the black smoke is a sign of running rich . now the other issue the surging which means boost issue. turbo system needs to be checked .

Expert:  Wolfgang replied 1 year ago.

VAG COM scan tool is needed to tell the ecu to operate the turbo vane adjuster to see if there is movement or not. if no movement then you will need a rebuilt turbo.