1994 Volkswagen Jetta Q&A

1994 Volkswagen Jetta Question: check engine light

My check engine light comes on & the power seems to go down. After a while the light goes off & the power is back to normal. Any suggestions? -
Answer 1
Do you know the fault code associated with the check engine display? Look under the hood for loose electrical conections and check all the hose attachments , especially between the intake manifold and air cleaner. Physically test them by wiggling to be sure they are tight. If the engine simply loses power but does not miss or run rough you may have a mass air flow sensor issue. While the symptoms are evident try driving with the mass air flow sensor disconnected. If things improve your mass air flow sensor is suspect. Get the vehicle scanned , Kragen or Auto Zone stores offer this for free , and see what the fault label is. -
Related Items:
2.0L turbo charged engines may develop a hesitation on acceleration and/or illumination of the Check Engine Light due to a failed high pressure fuel pump or a worn camshaft follower or camshaft. Our technicia...
Check engine light flashes, would go over 30 mph
I need it to pass the smog test and my check engine light is on
Due to an ignition component and/or engine coolant temperature sensor failure, the Check Engine Light may illuminate. Replacement of the failed component will be necessary to correct this concern.
My check engine light is on and it's stalling when the engine is hot. I've replaced the coil and plugs. Do you have...