Peterbilt with electrical problems
Thread Starter
|
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Well, the battery protection module showed up on Thursday, and I installed it on Saturday. It was having headlight issues as well, but that traced to the plugs behind the front bumper- Third truck with that problem this week.
So far, so good, the truck has logged a few hundred miles without issue. I cut the old one open, and it had some pretty nasty corrosion in it, definitely got wet at least once.
I'll wait to call "fixed" on it until next week, I need to wait and see if it holds together.
So far, so good, the truck has logged a few hundred miles without issue. I cut the old one open, and it had some pretty nasty corrosion in it, definitely got wet at least once.
I'll wait to call "fixed" on it until next week, I need to wait and see if it holds together.
New User
Joined: Nov 2014
Posts: 1
Likes: 0
I own a 2002 379 as well and am having the same issue, while the truck is running, the battery protection system will kick on, start sounding it's alarm, and power off everything except the engine. I'm having a hard time finding the module you said you replaced. Is it behind the fuse panel in the driver's footwell? And did replacing it remedy the issue?
Thread Starter
|
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
From what I remember, it was inside the dash, reachable through the instrument panel opening.
After I replaced that module the truck didn't have any further issues with blowing fuses or alarms.
Make sure to check your alternator output as well, not just for DC volts but AC, more than about .3vac and the computers start freaking out.
After I replaced that module the truck didn't have any further issues with blowing fuses or alarms.
Make sure to check your alternator output as well, not just for DC volts but AC, more than about .3vac and the computers start freaking out.
New User
Joined: Aug 2015
Posts: 1
Likes: 0
well this problem frustated me for years! If you want to stop the leak dont look at the seal on the windshield! Its coming in where wire harness's enter the cab on the fire wall. It can vary how much water enters that location if, your air ride on you can loses air when the trucks not being driven. So the rear of your cab lowers it opens a gap between the hood and the cab. Now rain has a direct route to to the area where harness connects to the firewall! Of coarse water is gonna penatrate any unsealed areas! Once inside the firewall it follows your wires into fuse panel creating havic! Seal that location with a good silicone!
Damage has probably already been done to the fuse pane but a good mechanic may be able to repair it if corrosion hasnt gone to far!? Good luck!
Damage has probably already been done to the fuse pane but a good mechanic may be able to repair it if corrosion hasnt gone to far!? Good luck!
I know some people on here work on trucks, well I've got a real good problem.
2002 379, pretty standard truck. The company I work for has had it for about three years, and the whole time it's been acting up to varying degrees.
The constant issue is that the battery protection system indicator is always on, dimly. Occasionally, while the truck is running, the battery protection system will kick on, start sounding it's alarm, and power off everything except the engine.
Lately, though, it has started a new trick. Occasionally, the whole instrument cluster will start freaking out, all the lights and alarms go on, all the gauges drop to zero, but it all comes back to normal if you cycle the key, even without actually killing the engine. It also sometimes kicks on all the warning lights when put in reverse, but I haven't been able to get it to do this for me.
The other day, the low air alarm started going off with 115psi in the tanks. I checked at the air pressure sensors in front of the brake pedal, and was only getting 4v there. After turning it off and on a few times doing other tests, I had 10v there and the light went out.
I'm kinda lost on this truck, since I don't have all the documentation I need on it. I did order a battery protection module for it since that's the only thing I could find that might be keeping the light on, but I don't think it'll have any effect on the other problems.
Has anybody run into this before? I'm really not used to having electrical problems beat me.
2002 379, pretty standard truck. The company I work for has had it for about three years, and the whole time it's been acting up to varying degrees.
The constant issue is that the battery protection system indicator is always on, dimly. Occasionally, while the truck is running, the battery protection system will kick on, start sounding it's alarm, and power off everything except the engine.
Lately, though, it has started a new trick. Occasionally, the whole instrument cluster will start freaking out, all the lights and alarms go on, all the gauges drop to zero, but it all comes back to normal if you cycle the key, even without actually killing the engine. It also sometimes kicks on all the warning lights when put in reverse, but I haven't been able to get it to do this for me.
The other day, the low air alarm started going off with 115psi in the tanks. I checked at the air pressure sensors in front of the brake pedal, and was only getting 4v there. After turning it off and on a few times doing other tests, I had 10v there and the light went out.
I'm kinda lost on this truck, since I don't have all the documentation I need on it. I did order a battery protection module for it since that's the only thing I could find that might be keeping the light on, but I don't think it'll have any effect on the other problems.
Has anybody run into this before? I'm really not used to having electrical problems beat me.
Thread
Thread Starter
Forum
Replies
Last Post
Paul98038
1997 - 2003 F150
1
Dec 31, 2019 03:57 PM
ExPACamper
1999 - 2003 7.3L Power Stroke Diesel
29
May 3, 2017 07:11 PM
RetiredGreaseMonkey
1997 - 2003 F150
0
Mar 3, 2016 12:16 PM
