RepairPal is your advocate for car care advice and guidance

Q: check engine light on 1994 Volkswagen Jetta

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
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?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
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.
Find Out Why Your Check Engine Light Is On
Didn't find what you were looking for?