ABS issues
Thread Starter
Instructor
Joined: May 2007
Posts: 230
Likes: 14
From: Northern Illinois
ABS issues
I recently changed the engine in my Z06. I lowered the entire drivetrain out the bottom and disconnected all the brake lines at the ABS pump.
Now when I do a hard stop (as in autocross stop), one wheel will lock up. I can't say for sure that it is constantly the same wheel.
I have bled brakes. I have had a shop with a tech 2 do an ABS bleed.
The DIC shows ABS active when I do a hard stop, but I feel no modulation from the brake pedal. I check for codes immediately after the hard stop - no codes.
Same combination of tires, brake pads, fluid, etc as prior to the engine swap and it had worked fine for years prior to the engine swap.
Any ideas?
Now when I do a hard stop (as in autocross stop), one wheel will lock up. I can't say for sure that it is constantly the same wheel.
I have bled brakes. I have had a shop with a tech 2 do an ABS bleed.
The DIC shows ABS active when I do a hard stop, but I feel no modulation from the brake pedal. I check for codes immediately after the hard stop - no codes.
Same combination of tires, brake pads, fluid, etc as prior to the engine swap and it had worked fine for years prior to the engine swap.
Any ideas?
Drifting
Joined: Oct 2002
Posts: 1,774
Likes: 66
From: SoCal
First pull your codes. See what codes are being thrown. If you have a wheel locking up you might have a sensor issue at one of your wheels (one locking up). Maybe a sensor was disconnected and needs to be re-connected. But that should show up in your code list.
Thread Starter
Instructor
Joined: May 2007
Posts: 230
Likes: 14
From: Northern Illinois
Well that's what is puzzling me. There are no codes. I've checked. I can take the car out, stand on the brake till I get wheel lock up, pull to the side of the road and check codes - no codes!
I have checked the wheel speed sensors and connectors. I've disconnected one at a time and looked at the code to insure that each corner is properly talking to the computer.
I have checked the wheel speed sensors and connectors. I've disconnected one at a time and looked at the code to insure that each corner is properly talking to the computer.
Drifting
Joined: Oct 2002
Posts: 1,774
Likes: 66
From: SoCal
Read this thread. Sounds just like your issue. Maybe a crossed wire when reinstalling the engine.
https://www.corvetteforum.com/forums...dic-codes.html
https://www.corvetteforum.com/forums...dic-codes.html
