Had to change the UVC harness on my 2001 7.3. Truck fell out. Trailered it home and changed the UVC harness on the passenger side. Truck is running great, but now the OD light is flashing. Can't read transmission codes, but was wondering if something from the bad harness could have caused this? Any thoughts?
View 7 RepliesWhere I can get the head light to fog light wiring harness..it is almost as hard as finding the holly grail..... 2001 f350 7.3 .......
View 9 RepliesI'm trying to find a part number for the wiring harness that sits on top of the motor and plugs into the valve cover gaskets. The previous owner replaced the pigtails but the wires were cut so far back that there is virtually nothing left coming out of the harness. What the actual harness looks like other than it has the 9 pin plug on it or whether both sides require an individual harness. What is the part number or picture of said harness. Just in case.... it's a 2001 7.3.
View 14 RepliesI have a '99 F250, 7.3, CCSB with just over 127K on the clock. I went out of town for 10 days and was ready to get out of the grocery getter and into my truck. I hop in and it cranks great but would not start. I pop the hood and start with the easy stuff. Made sure all plugs/connections were good, check. Relays and fuses are still in good order (under hood and dash), check. Fuel pump was replaced less than a month ago (works great) with fuel in fuel bowl (new filter), check. Try to start a few more times with no luck, so I tinkered around for few more minutes and it starts right up and drives perfect.
Drive around, truck is on and off as usual throughout the day and go back to work next day around 10:30. Truck starts as normal. Get to work and have to run out but truck doesn't start again. After key is in on position for 15-20 minutes while checking fuses and such it starts up and runs perfect. I drive around for 20 minutes and return. I got off about 5 hours later and it doesn't start. Leave key in on position while I'm explaining issues to a buddy again 15-20 while key is on it starts right up. I drive home and park and I haven't been able to start it since.
From reading forums and watching you tube I'm leaning towards IPV or CPS but no one has described the problem as I've had. I do not have monitors, tuner, or anything aftermarket but I'm a mechanic and have a descent set of tools at home.
While driving my 99 F350 7.3 it died and I was lucky enough to coast home. No WTS light, no tach movement when cranking, no fuel pump, no CEL, Cranks great but no smoke or fire. New CPS & PCM still no lights or tach. Moved relays checked all fuses. WTF is wrong?
View 14 RepliesI have a persistent issue with the OD off light flashing on my 2001 7.3L auto 4x4. Scanning it with AE I get the P1832 code. The truck runs and drives just fine. It shifts nice, goes into overdrive, locks up, etc. If it weren't for that blinking light I'd think it was all perfect. I've checked all the connections, replaced the range switch / neutral safety switch, replaced the VSS on the rear axle, checked all light bulbs and fuses. I've checked MOST of the relays in the truck.
I pulled the tranny drain plug and poured out a bit of fluid into a clean pan, it looks and smells good. AE also tells me that it's not communicating with the ABS system (although there's no persistent ABS warning light on the dash), the Airbag, the Overhead Trip Computer, the Parking Aid (which I don't have...), or the Enhanced Powertrain. The temperature on my overhead display is reading -40F which is clearly wrong.
I've looked for a comprehensive wiring diagram for the truck, but can't find one. I'm trying to figure out if there's a connector or module that these various functions go thru that might be the problem. Am I missing a ground somewhere? The frame was just powdercoated......am I not getting a good ground connection? In complete disclosure, I have torn this truck apart and re-assembled it out of several different trucks as outlined in this thread.
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Truck starts great, and runs and idles fine until it warms up. This could be 15-20 minutes of driving or idling. Then it just dies. Like dead dies, lose power steering, everything (ac and lights still work, but no engine). It had died while idling, it has dies while cruising at 45mph. Then it will crank but no start. After about a 45min to an hour it will start like there was not issue, and pretty much drive the rest of the day (even after sitting) with no problem.
I installed the Adrenaline a few months ago, but the truck ran great for quite a while before this problem occurred. I did have it shipped with a rebuilt IPR. Tonight, I rebuilt the IPR with Guzzle's kit, and stripped it all the way down. Truck died again.
I have not had my AE hooked up when it died (stupid me today). But afterward I have been getting a few codes: P1283 (IPR Control Circuit) and P1212 (ICP lower than desired Engine crank or run).
When trying to start ICP duty cycle is about 64% and pressure is 185 to 190. If I unplug the ICP sensor pressure jumps to 2000ish, truck turns over faster and ICP Duty cycle goes to about 35%.
My dumb self cut my factory harness to install a radio and after hooking up said radio (which I know how to do) it popped a fuse. So to avoid any trouble I need to put another harness in but again with my stupidity I cut the wires too short. finding the correct harness
View 2 RepliesSo after hitting a pothole, it would seem like half the engine lost power, after some searching around, i found that i would most likely be the harness inside the valve cover that has lost connection.
Its the right side, so i would need to take of the turbo pipe, and probably something else to get to it.
Since i'm doing this job, what to check out along the way? I want my 7.3 to be as reliable as possible.
I will probably ask some questions along the way, it can be a challenge sometimes to own a car that not many mechanics are familiar with, but as i have read online, this should be a very straight forward fix.
Can the harness be upgraded so it doesn't happen again? Its an 02
I have a 2001 F350, 7.3. My service engine light came on and immediately the truck started to run rough and lose some power. I've checked the under the cover connections and they were both connected, I replaced the cam position sensor and I still have the same problem. The worse part of the hold thing is that there are no codes stored so I'm flying bind. Where to go next.
View 8 RepliesMy 2001 f250 7.3 was running then just shut off like I had turned the key off, While trying to start back up, the truck turns over fine but no fire. I also have no gauges, I tested both fuse boxes and the one under the hood I have power on all big fuses, including the PCM but some of the small ones I don't, No power to the PCM diode, either side, the fuse box inside the cab, I have half power, No power to the PCM fuse is their a fusible link somewhere?
I really can't see much down there. The truck did get into a accident in Oct, which created a problem with the ignition and not sure if that could be a problem? That problem is, when I turn the vehicle off, it would stay running for a few seconds. I ignored the problem cause it didn't hinder the vehicle any.
While engine was running. brake switch "recall harness" shorted to exhaust manifold blowing fuse 22. truck died instantly. found the short and replaced fuse. checked all fuses good but no start since. WTS indicator stays on. tried a new GPR and a new CPS.
Does IPR and brake switch (on master cylinder) share fuse 22? fuse 22 holds now (when wire was fused to exhaust manifold it blew as soon as key turned on). unplugged FBH no change. recall harness "beeps" good and wires do not appear burnt. also shuffled relays around in central junction box.
Could formerly access OBD2 port with superchips programmer but no access now. fearing the worst, but hoping maybe bad ipr sensor (or another sensor) could cause this. Is it likely or not that this short fried the PCM?
I am going to add some led's to illuminate the steps getting into my truck at night. I plan on putting them directly under the door over the steps. Is there a wire under the door threshold I can tap into at each door? If so what color? If not, where to get the power from. I want them to turn on and off with the interior lights when doors are opened.
View 1 RepliesI have a 2001 F350 and over the past few nights the horn has started honking once randomly. It always only honks once but will do it several times a night (may be more that I don't hear). I'm thinking that this has something to do with the alarm maybe? I can't afford to take it to the shop at the moment (nor any moments in the foreseeable future, come to think of it) and am hoping that its something that I can fix myself?
I'm having other miscellaneous electrical type issues, but don't know it there are related at all. For example, the power locks don't work (they try to, but don't seem to have enough power), the overhead console that digitally displays the outside temp/mpg/etc. stopped working suddenly and the lighter/power plug outlet stopped working, but I was able to fix this by replacing the fuse.
A bit about my truck : 2001 F250 CC SB 4x4 175k miles
Wicked wheel, 6637 filter, DP tuner, Summit 5" exhaust, pressure regulator somewhere in the boost circuit to fool the computer a bit....
Every few times I drive the truck it will stumble and maybe even stall. The issue feels something like a CPS problem, although I've swapped out a few CPS to see if I by chance had a bad one in the engine as well as a bad one in the glove box. No changes. I was driving home from work one afternoon and it was running particularly bad. I stopped off at a local garage (who doesn't work on diesels and was reluctant to plug in....but did because he's a nice guy).
He plugged in with his snap-on tool and came up with P0603 and P1211. The P0603 seems to be nearly inevitable with a tuner. Check P1211 sounds like it could be an issue with a number of things, but I tried to attack the free and cheap issues first. I dropped my tank and had a look inside. I was hoping to find a squirrel wrapped around the sending unit, but there was a disappointingly small amount of crud. I cleaned it up and put it back in, then changed my fuel filter. No improvements.
So I decided to get with the program and buy AutoEnginuity. Got it. Even did some reading in class and did the initial homework assignment on page 2 or 3. Seems like the best thing to do it hook up, set up some parameters to monitor, and drive around recording until the problem happens. But.........what parameters do I want to monitor? I don't want to overtax the OBDII bus with too many requests such that my data looks like crap.
A few other things............ In the last year I swapped out the valve-cover gaskets & harnesses with an all-in-one molded setup. About a month back I replaced the exhaust back pressure sensor and tube.
As part of my ongoing P1393 troubleshooting, I’ve found that I can’t get the main engine wire harness separated. The big connector by the driver’s side valve cover.
I’ve cranked and cranked in the correct direction, but the plug never separates. I tried a cordless impact wrench and it still doesn’t move. (Edit -- the bolt moves very freely, but it doesn't push out one side (e.g. like removing the PCM) I can't figure out how to separate the two sides.)
Any tips on how to get it separated? Can I cut off the bolt head to get it separated?
I have what might be a big problem, the main harness on top of the drivers side valve cover I can't get undone, the bolt holding it together is stripped or the nut who knows? wondering if there is any way to take it apart otherwise.
View 11 RepliesMy 2000 f350 has wires that dont match anything I've seen. I need to mate this to an 08 harness so I need to be accurate. I have
(2) yellow. I know this is 12v constant
(2) green/purple I know this is 12v constant
(1) red/black
(2) solid red
(1) solid black
(1) gray/light blue
Battery light comes on when the truck is running at less than about 1200rpm, but I see zero movement on the needle. Weird thing is i charged the batteries and tested the alternator with my multimeter and it was reading 14.1-14.2 which is nominal. Run it for about 10 min then it reads 12.3-12.8
I'm thinking a bad cell in the battery or alternator is going out. Oh and all the connections are tight, wires look good. 2001 f250 4wd 7.3 intake exhaust basic tuner gauges. Could the constant heat be a factor?
I'm sure there is something on this somewhere but can't seem to find. Getting ready to change injector o rings and see where people say to drive it 200 miles to get it running right again. Well, I am in the process of a conversion and have no tags or insurance on the truck. Trying to fix issues before I spend that money on it because don't know how much I am going to have to put in it to fix the issue's.
Is there a way to bleed out the air so I don't have to drive it 200 miles? Also, how long will it smoke after the injector change to see if it is actually fixed? I know I should probably see a big difference is ICP,IPR and such. Already know it has leaks in the turbo up pipes which will have to be dealt with too.
I have a 2000 Ford F550 7.3. I bought a Superchips programmer to read the codes on my truck and up pops this P1316, so I did some research and found out that the most common problem is the injector wiring harness. I bought new valve cover gaskets and the injector wiring as well because the truck is old and I figured new wires wouldn't hurt.
So after installing the new wiring harness and gaskets I'm still getting this Code! The truck idles rough and serge's sometimes, also there is a lack of power and some shaking between 40 and 50 miles per hour, however form 50 to 60 MPH seem's to be just fine. I don't trust the "Mechanic Shops" around here and will only take the truck in as a last resort.