check engine

[BuickGirlFromMars]

update;
now i have an new o2 sensor, and the old prob.,

i found some guy with an odb-sun scanner and we ve found the failure codes 1640 and at the abs system 74,75,76,77, but they are only stored in the long time failure memory.

the MIL goes on and of in cold and hot condition how she like, if i turn the engine off with ignition, on the mil goes out.

after i drive about 100m the Traction off light is on.

please help.....

Sounds like pcm is receiving a LOT of incorrect inputs some of the time (how likely?), a ground is an issue somewhere, or internal issue to the computer.

 

[parkav]

yesterday i remove the filter from the vacuum modulator valve. looks good.

 

[BuickGirlFromMars]

yesterday i remove the filter from the vacuum modulator valve. looks good.

I noticed you have these other past issues.

I think your current problem is related to ground problems, if you have all these disjointed issues still, that are intermittent, you may be looking at simply your powerr and grounds are problematic