FYI, I broke 100K today!!! I watched the the odometer roll 99,999 to 100,000 on the highway. So cool.

I have an ABS problem.

My ABS light came on after getting past 70mph.

And I was able to to reset by shut down and then start up, drive under 8mph for 1/2 mile according to the manual.

I ran a few test runs and it turns out that if I get past 70mph, the ABS light comes on. I can reset it easily enough but I wonder what's causing the issue.

Anyone else had a similar issue or any thoughts?

Thanks in advance!

My money would be on a bad sensor or perhaps an intermittent wiring issue. It could be that in excess of 70 mph, there is sufficient vibration to cause a glitch.

Basically, the ABS is continuously looking at the speed of the rear differential and the two front wheels. When they don't match during braking, it is interpreted as a skidding/sliding event and the automatic brake pumping is engaged. If you're moving but not braking when when it happens, it's seen as a system problem and the ABS light comes on to warn you.

I'd take a good look underneath the truck and closely examine the wiring harnesses leading to the sensors.

Thats very useful info. I did not know that. I read almost everything there is on this forum on ABS issues and I am planning on checking the sensor and wiring when the sun came out (its been raining for the last 8 days here in the NE).

Definitely new info to me at least regarding how the ABS is checking speeds.

Thank you for the reply!

Basically, the ABS is continuously looking at the speed of the rear differential and the two front wheels. When they don't match during braking, it is interpreted as a skidding/sliding event and the automatic brake pumping is engaged. If you're moving but not braking when when it happens, it's seen as a system problem and the ABS light comes on to warn you.

hi
I have a problem with p0341 in rodeo 1999 cam sensor referance code.
please let me know what is that all about.I have replaced cam sensor,still same code and it runs okey at idle, but when I drive it it misses like misfire. check engine lite comes back, I have changed the ECU also, same problem. it is 4 cyl. 5 speed std transmission.
thanks