2006 vw jetta will not accelerate and shakes and puffs

SOURCE: check engine light on, car shakes while in reverse, stalls ...

it could be your mass air flow sensor? try checking that

SOURCE: engine is shaking, reduced power to engine, service engine light on, all of a sudden, car was driving fine

bad ignition coil pack.easy to fix

SOURCE: 2004 VW Jetta 1.8T

Loss of power? How many miles? Plug, plug wire or ignition coil(if seperate poles) would be my guess.

SOURCE: After start, eng. shakes at idle. 2001 VW Jetta

if it has a 1.8 coils are bad but check mass air meter and throttle as well

SOURCE: 02 VW Jetta TDI with ALH engine glow plug

this is a common problem for these cars glow plugs go bad like spark plugs however the smoke would lead to bad mass airflow meter. it is not telling ecu corrcet miss. disconnect mass airflow meter. when cold see if this makes it start better. it should would means you need new m.a.f. glow plug issue take a test light place clamp on positive of battery then pull off glow plug connectors place tip of test light on glow plug the bad one will have a dull light unlike the good one which will be brighter. will need new plugs and wire harness four **** connectors and wire striper and crimper will fix concern good luck