2002 Cruise control sparking sound under load

[Jurassic_Ranger]

Howdy, First post. I've searched all ranger & explorer forums, and I haven't been able to find anyone with the same issue. (I also posted this a couple other places if you see it anywhere else)

Some background: I bought a 2002 4.0 4x4 Ranger from an older fellow a few months ago, and I've been slowly clearing codes & making repairs. The truck is 100% now, but I've discovered a weird issue: when I'm using the cruise control and go uphill/under load, and noticeable arcing/sparking sound can be heard behind the dash in the direction of the fuse panel or the power distribution box . I considered speaker static, but it distinctly sounds like wiring sparking/popping. I can't hear it on flat ground, and the cruise control seems to otherwise work perfectly fine. The cruise brake pressure recall had been completed, but I went ahead and replaced it with the updated model switch anyways. All fuses look fine too. Short of ripping out the dash, I'm at a loss. I really don't want to use the cruise either until it's fixed.

Has anyone had a similar issue, or would anyone have any ideas of what I could be? I can give any additional info/videos if need be. Appreciate it.

 

[85_Ranger4x4]

I would use it sparingly until you get it sorted out.

I would almost pull the fuse or somehow disable it honestly.

 

[Jurassic_Ranger]

I've been avoiding using it. Pulling the fuse isn't a bad idea either.

I've read that wonky clock springs can cause noises, but I don't know. If I could track down a cruise control wiring diagram for my year/engine, I feel like I'd have somewhere to start. Not having much luck though.

 

[85_Ranger4x4]

I've been avoiding using it. Pulling the fuse isn't a bad idea either.

I've read that wonky clock springs can cause noises, but I don't know. If I could track down a cruise control wiring diagram for my year/engine, I feel like I'd have somewhere to start. Not having much luck though.

Check ebay for a 2002 Ranger EVTM, I used the appropriate one to retrofit OEM cruise to my '85.

 

[BobSacamano]

I've been avoiding using it. Pulling the fuse isn't a bad idea either.

I've read that wonky clock springs can cause noises, but I don't know. If I could track down a cruise control wiring diagram for my year/engine, I feel like I'd have somewhere to start. Not having much luck though.

Electrical Diagrams — 2002 Ford Ranger 4WD V6-4.0L VIN E Service Manual | Operation CHARM

Detailed repair manual for the 2002 Ford Ranger 4WD V6-4.0L VIN E.

charm.li

 

[Jurassic_Ranger]

Appreciate it. I'll look, but I still might end up taking it to the stealership and see of some old tech has an idea.