Need Some Help. (ABS & AC - rv)
08-06-2008, 12:49 PM
#18
Burning Brakes
Thread Starter
08-06-2008, 12:50 PM
#19
Burning Brakes
Thread Starter
08-06-2008, 12:52 PM
#20
Rennlist Member
[I got distracted and BAM!, ten posts came on this]
Last edited by SteveG; 08-06-2008 at 01:35 PM.
08-06-2008, 01:19 PM
#21
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Steve has a good point about printing the fuse relay chart and having it IN THE CAR alone with the common #53 relays which powers up three things which keep the car running ....fuel pump ,ignition ,and injection 
The infamous Relay ,relay , relay....
The infamous Relay ,relay , relay....
08-06-2008, 01:38 PM
#22
Rennlist Member
Its interesting that you should mention this. After running the car for a while with the A/C on, if I make a sharp or extended right hand turn, COLD WATER pours from under the dash board on the drivers side and soaks my shin and lower leg. Could something down there be clogged? I know that it is A/C related, but I am not sure what I am looking for.
All of the comments above are EXTREMELY helpful, and this weekend I will jump in and figure out the problem...
All of the comments above are EXTREMELY helpful, and this weekend I will jump in and figure out the problem...
Anyway you look at it, you should clean the evap. It will flow better and your AC will be more efficient and cooler.
What others said about troubleshooting your vacuum system is the way to go. The vacuum controls many functions of the HVAC. And when one or two goes down, they all do (if there is enough vacuum loss).
See you may have a good heater valve, but not enough vacuum to close it all the way.
Here's Pirtle's approach to testing HVAC vacuum function. It's systematic, and it works.
08-06-2008, 01:44 PM
#23
Drifting
I would guess that when they did the brake job on your car, one of the front wheel speed sensor got misaligned or the cable was damaged. Most likely you can clean the sensor and reseat it in the hub and it's fixed.
The ABS controller isn't seeing a wheel speed, probably intermittently or you'd get an immediate fault, and is running the pump to limit the pressure. When one of the front wheel speed drops out during braking, the ABS unit interprets that as wheel lock. It will release all the hydraulic pressure from that circuit to try and get that wheel back into stability. While that is going on, you are only getting actual braking out of the other front which makes the car pull in that direction. ABS systems are 3-4 generations newer than that now and have much better fault monitoring to keep situations like this from arising.
The ABS controller isn't seeing a wheel speed, probably intermittently or you'd get an immediate fault, and is running the pump to limit the pressure. When one of the front wheel speed drops out during braking, the ABS unit interprets that as wheel lock. It will release all the hydraulic pressure from that circuit to try and get that wheel back into stability. While that is going on, you are only getting actual braking out of the other front which makes the car pull in that direction. ABS systems are 3-4 generations newer than that now and have much better fault monitoring to keep situations like this from arising.
