I know these are getting old but whenever i turn on my truck and flip my switch for my OHC it everything turns on but then goes out after some time like only maybe 30secs or so. Im not sure why it does this but i rewired it to a switch to see if that would change anything and it doesn't. Any ideas?

 

Why do you have it on a switch for starters

 

i have it on a switch because i have to many things running from my radio for power so i didn't want to tap in there. I jsut ran it to the battery and but a switch on it. Easier than finding an ignition wire.

 

sounds like a switch problem to me get a new switch

 

its not the switch because it did the same thing when hooked up to my radio.

 

Does it light up just for a second and then go off or does it come on, go off then come back on?

 

lights up for a second then goes off.

 

sometimes it will come back on like its working properly but rarely does it do that.

 

Mine did the same thing for a while. What year is your truck?

 

92 why? can that have something to do with it? I tapped into the right vss wire though. hmmm its pretty aggravaiting to have it just sitting their and not doing anything. How did you fix yours?

 

I just redid my wiring and then it worked. I would double check your wiring again. It could be a problem with the console though, when I was trying to fix mine a read a lot about Explorer guys having problems with capacitors in there consoles failing and causing this problem. I bet its your wiring though

 

ill rewire tomorrow morning and see what happens hope i can fix it. Ill let you guys know what happens.

 

Yeah I would. I thought mine was a bad OHC so I tidied my wiring up and was on the way to meet a member from here to get a new one when I just started working lol

 

just curious... how did you connect your wires? just wire nuts or did you solder the connections together then crimp them?

sometimes wire nuts arent the best things to use. i know it can be tricky to solder inside the cab (and a little scary) but i would do that if you have a soldering gun. plus, the wire connections will last longer and not corrode or fall apart on ya.

 

umm, if i see someone using a wire nut on a car, i think i will kick the person in the nuts.

i could see doing it if it was a temp fix or something, but really, a box of good butt connectors is cheap.

 

actually guys i am a avid solderer and woudl not use any of the afore mentioned. I soldered every single connection in the harness and that is gonna be a ***** to unsolder and rewire everything but i am going do it. And it came on today when i was going to work. Kinda weird because it didn't come back on on the way home.

 

sounds like one of the power lines is loose or has a bad connection on the board.

and i wasnt tryin to say youd do it the cheap and unreliable way, but you never know how some people do things

 

I would check the ground. I just installed mine a couple of days ago and attached my ground the way N3ELZ said to, but it didn't work for me (not dissing N3ELZ, it just didn't work for me). I was having all sorts of weird problems, but when I twisted a wire onto the OHC ground and then touched it to my amps distrobution box ground, it worked perfectly. I ended up running a ground wire along with the other wires and using a factory ground point under the steering wheel. I know the ground should be short as possible, but it was my only option.

 

I'd take a look at the circuit board. I had a crack in a solder joint (seen w/ a magnifying glass) that after I cleaned it up and resoldered the problem was fixed. I also cleaned up some other joints that looked suspicious while I had it apart. I've had 4yrs of trouble free OHC since doing this.

 

the ground sounds like it might be the culprit because i ground it under the screw on the a pillar and it seemed to work for awhile.

 

Try grounding it to the OHC bracket, thats what I did and it worked perfectly.

 

x2

 

ok so i rewired the ground and grounded it to the bracket was working thsi morning but now it refuses to come on.

 

and now it works great im not sure why but it does. When i turn my truck on it will come on and then when i start driving it shuts off real quick and then comes on with the proper readings. sometimes it flickers so i think i should check all my wire connections. But yeah everything is working good lol thanks for all the help.

 

maybe check the wires on the OHC that go to the display if all your other wiring checks out