i just put custom sheet aluminum valve covers on my car and now under hard acceleration my abs inop light comes on. i am running the ltcc and the coils are on the valve covers. i was running lt4 valve covers with the coils mounted on those and this was never a problem. is it something to do with the aluminum valve covers or whats the deal.

ryan

 

no bud it some times under hard accleration knocks sensor loose it does it to my car to bud

 

mine comes on occasionally too. sensor is loose.

 

i dont mean to steal your thread....but mine is always on. does that mean i need new brakes or something???

 

so i just need to tighten down the sensor. it didnt do it until i swapped valve covers

 

For 96-blklt1:
The ABS light on all the time is a hard failure and is not from the wheel sensors. When ever the ABS inop light comes on AND cruise doesn't work, suspect the third brake light. GM does not allow cruise or ABS without a working third brake light.

Wheel sensors set a code only after the car starts to roll. That's a soft failure. Each time the power is turned off, the ABS inop light goes off until the car rolls again.

For Lil ryan:
However, one other major reason (at least on this board) that the light sets is plug wires running too close to the ABS wiring. This appears to interfere or cause noise on the wiring from the ABS to the EBCM. My EBCM was defective causing the problem. After eliminating all other possibilities, got one at a JY for $25. I think dealer cost at the time was 170. The JY guy didn't know what it was.

 

what is the ebcm.

 

Electronic Brake Contol Module..... ABS.

 

Too funny, I did a small burnout for a friend today, and my light came on ... until I shut off the car, and restarted it. It has stayed off since ---

 

yea mine does this and im pretty sure its due to plug wires becuase of how i have the routed at the moment....so check your plug routing

 

ha....yah, i check the third brake light, and that was it! thanks alot. :-)