Check engine

[Knivx]

Ok the other day I took the fiance out for a drive over the mountains. Very bumpy rocky and steep. Well half way up one climb the abs light comes on. I reach the top and shut the vx off thinking maybe my fluid was a little low (it was) and had just sloshed around and set the light off. Start it up and of course it's off. So I continue next climb (quite harder) check engine light comes on. Not something to tell the off-road uninitiated whilst a very steep rocky climb that is already freaking her out (i told her anyways) I get to the top and try shutting it off again and popping the hood and poking around. I don't find anything and it's running fine still. When I get off the mountain i take it to Autozone to have them plug in their little deal and read the code. Something about a speed sensor (which they only stock for a vx without TOD?????) So the next day I drive it around with the light on. Climb underneath hoping i just jostled something loose but don't find anything. Start heading home and it mysteriously goes off (the check engine light). hasn't come on since. Any ideas? Anyone had this happen before?

[Solitude]

Not really sure.. but if you search CEL or check light.. or speed sensor.. maybe things will appear for you.. the information here is collected from many who are not with us anymore... TRy the search function it probably will be faster then waiting for all the hardcore VXers to get back from MOAB>insert curses here<

[VehiGAZ]

Search for the specific error code the Autozone guy pulled off for you. The speed sensor is used by the both the ABS and ToD systems, so the two warnign lights are probably related.

[Knivx]

Well either way it's not on anymore so I'm hoping it was just a freak occurance. Maybe it did break but the VX just fixed itself. Had a cherokee that'd do the same things, break then fix itself.

[JoFotoz]

I threw "check engine" twice on the Moab trip.

Both times on Steep climbs at altitude in HOT weather....

Seems the VX 02 sensor does this sometimes in those conditions...then resets.
I think a couple of others got the same....


jo

[Knivx]

Well those were definitely the conditions. At least I'm not the only one. That makes me feel better.

[Ldub]

I think altitude plays a large part in this problem, I also believe being supercharged magnifies it.

I threw 3-5 cel's a day after we got out of the flat land, on the way to Moab.
No less than 4-5 a day while in Moab, & the same on the way home.
Since I've been back at "normal" altitude, no cel's at all.

Fortunately for my sanity , I can read & clear codes on the fly with my scan gauge. (from Tone)