As I was heading down the trail yesterday, I started having some issues with my ABS system (2000 100-series). All of a sudden, the brake pedal started pushing back towards my foot as I was pressing down on it. It would then "pop", releasing some pressure and the brakes would release slightly, causing the ABS/VSC OFF/VSC TRAC lights to come on (no check engine light or audible alarm, though). Another press on the brake pedal would turn all the lights off, but the next time I pushed on the pedal, it would all start again.
Luckily, I made it down the mountain and managed to get the truck over to my shop in Wheat Ridge (Japanese Auto Service). They put a scanner on it, and said they were getting two errors from the computer's memory - one having to do with the ABS sensor, and another having to do with the ABS actuator (they didn't give me the specific codes). They said the ABS sensor error had something to do with the truck thinking it was experiencing "too many G's", so they brought the truck onto the shop floor and "recalibrated" the computer, to no avail. They said the entire master cylinder assembly might need to be replaced, to the tune of $2,600 (I asked about a rebuild and they said they won't do it - only full replacement).
I didn't necessarily wheel it super hard yesterday, but I did take it through a bunch of mud puddles. I'm thinking this could be a faulty sensor somewhere in the ABS system, or something up with the actuator (which means I'll probably have to replace the entire MC), maybe even the ABS ECU. At this point, I'm thinking about rebuilding the master cylinder, replacing the main piston (as many have documented on MUD), since it's the cheapest place to start, but this really sounds more electrical rather than a pressure issue.
I've got the next three weeks off of work, and while I was hoping to spend it wheeling and camping with my kids, it sounds like it might be spent wrenching... such is life, right?
Any ideas?
Luckily, I made it down the mountain and managed to get the truck over to my shop in Wheat Ridge (Japanese Auto Service). They put a scanner on it, and said they were getting two errors from the computer's memory - one having to do with the ABS sensor, and another having to do with the ABS actuator (they didn't give me the specific codes). They said the ABS sensor error had something to do with the truck thinking it was experiencing "too many G's", so they brought the truck onto the shop floor and "recalibrated" the computer, to no avail. They said the entire master cylinder assembly might need to be replaced, to the tune of $2,600 (I asked about a rebuild and they said they won't do it - only full replacement).
I didn't necessarily wheel it super hard yesterday, but I did take it through a bunch of mud puddles. I'm thinking this could be a faulty sensor somewhere in the ABS system, or something up with the actuator (which means I'll probably have to replace the entire MC), maybe even the ABS ECU. At this point, I'm thinking about rebuilding the master cylinder, replacing the main piston (as many have documented on MUD), since it's the cheapest place to start, but this really sounds more electrical rather than a pressure issue.
I've got the next three weeks off of work, and while I was hoping to spend it wheeling and camping with my kids, it sounds like it might be spent wrenching... such is life, right?
Any ideas?
