Cruise control
 

My 97 has a problem with the cruise control. First off, it won't set between 60 and 69 mph. After your at 70 or above or 59 or below it will usually set the first try. If I'm empty and set it it climb about 10 mph and then kick itself off and not pick back up where it was set. If I am pulling a trailer and set it then it will seem to stay wherever I put it. It was where I could set it accelerate a little and then let it go back to the setting point and it would work fine. Any ideas?

Do you have ABS?

In the rear end yes. Not in the front end.

Well... that's sort of weird. I only ask because one day I was trying to diagnose a brake problem and unplugged my ABS, and one of the things I lost was the cruise control. I have no idea how these two systems interact, but if you have a week spot in the readings in that speed window maybe? No clue. I've never heard of this, usually cruise control problems with these trucks are surging, delayed response, things like that, due to being turned up way stronger than Chrysler electronics can adapt to. Usually restricting the vacuum line going to the cruise clears those issues up, but I don't think it would work for whatever this is. If I have some time today I'll check my service manual and see if I can find anything.

Thanks. It has done this since before I changed rear ends so I'm thinking it's not related to the abs.

The issue would be with the ABS computer. I don't know how different the setup was between '97 and '98 though. And only in the rear? Hm. Did you delete the front, or was this some weird Dodge thing that's commonly known but I haven't heard of it before? (it never ceases to amaze me when- despite my OCD- this situation unfolds yet again)

I didn't delete it. Their are no sensors or tone rings that I have found on the front end. My cousin and I both have 97's and neither have front abs. The only wires going to the front end are in the 4x4 cad.

So, weird commonly known Dodge thing I somehow missed then. Hm.

What else could be causing the problem besides abs?

Did it ever work right?