Mechanics

ENGINE LIGHT, CODE 77

1995 Oldsmobile Achieva

Engine Performance problem
1995 Oldsmobile Achieva 6 cyl Front Wheel Drive Automatic 70000 miles

Hello,
Below 60mph the engine light does not come on. Above, it comes on and trips a code 77.
I replaced the EGR, replaced the tube, reset by disconnecting the battery, then through dealer.

It still triggers the code and can not figure it out.
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Acsachieva
February 27, 2009.




Do you have vacum at the egr valve when you accell

Billymac
Feb 28, 2009.


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