1987 F-250 4x4, 460cid... My engine compartment harness smoked. Do the 1987 models have wiring problems and I need any wiring diagrams that are out there.
View 6 RepliesI plan on moving the engine/drivetrain from my 1986 F350 460 to my 1996 F250. I also want to move over the 1986's ignition system with a Duraspark 2 setup.
Although I could just cut in the easiest places to remove the wiring for later reuse I am looking for where to make the cuts, what to take and what to scrap. Alternatively I am also asking if there are aftermarket or OEM replacement sets out there are aren't a ton of money. The current harness in the 1986 has been sprayed with engine oil and cooked for 27 years so I am looking at alternative options if there are any.
My F250 is acting like the battery is almost dead but its not. I've checked all the grounds I can think of, used jumper cables and clamped right to the body and still nothing. I put my battery charger in place of the battery and my charger almost caught fire! Where are all the ground points at and points to check? It was doing fine then this. I only found 3 ground points on the block and I bypassed all of them and nothing. There are 2 large on the front of the block, I was able to get one loose and "clean" it but not the other. The block to firewall is currently off so I can clean it in the morning.
But it didn't do anything. I can clamp anywhere are get the same results. There are a few threads about this truck and trying to get it back into shape. When it worked, when I turned the key on, gauges worked, RABS, Engine, and Battery light came on, GPs kicked on, etc... now, I get a very faint Batt light, Erie dinging, and not even the stereo now. This truck has been an electrical nightmare since day one. Spent 4 days on just under hood electronics alone. Haven't even moved towards the back. Also, Instead of using a 2/0 AWG wire to the starter, Can I use two 1/0 AWG wires to it instead since they used two separate grounds? It also still has a 2G alt.
Click and Clack... When it wouldn't start one day (away from home) he had to keep going back to where it was to try to figure out what was wrong. He came up with a few different diagnoses but came to the conclusion it was the fuel injector inside the gas tank and went online to order one. Once it finally got towed back home, he had a chance to really get a good look and found that all those wires had been chewed and eaten. They're too short to splice back together.
View 11 RepliesLooking for a wiring diagram for a F-150 XLT LARIAT 5.8L 4BBL, all the books I have looked at show the wiring for this year with fuel injection and this truck came with a 351W with a Holley 600 4BBL, I have a few wire's in the engine compartment that melted away all the insulation, they are located close to where the harness passes the firewall before the ignition module. Is this a common problem on old models ?. Need a clear copy of the correct diagram for a f-150 1987 with carburetor, how I can get a copy so I can fix this problem before it gets worse.
View 3 RepliesSo I bought my 1987 F150 XLT 4X4 (4spd) about two weeks ago and haven't had any issues with it so far... until now. As soon as I got it I did a full tune up. Changed plugs, cap, rotor, fuel filter, new battery, sea foamed it, fuel filter, ran a bottle of fuel stabilizer through it, new pvc valve, cleaned the throttle body, oil change, etc., ( all the usual things).
Was running fine up until two days ago when I was driving down the highway doing about 90km/hr in 4th when the truck suddenly lost power, sputtered and died. Tried to start it again and it will turn over but not start. So I get a nice expensive tow home and start to diagnose the problem. It is not a fuel issue. I can hear the pumps coming on, and fuel is coming out of the fuel filter so I cross that off the list.
Next I check for spark. No spark at all. So I run some tests. Battery is putting out 12V, about 10 when cranking. The solenoid is getting power and putting out power. No visible damage to any of the wiring, and all the grounds look good.
Next I just went ahead and swapped out the coil thinking that could be the issue. Didn't work. So I preform some more tests on the old and new coils. Both are grounded and having voltage pass through them. Next I take the TFI module off the distributor and check for resistance. Everything still checks out fine. Now I am thinking that the only thing left could be the PIP in the distributor. So instead of taking the dist apart and screwing around I go ahead a get a brand new dist and throw it in.
Now I am stoked and thinking that I finally fixed my truck and go to start it up and.... no spark. It still turns over but no start. I am trying to provide every bit of detail that I can. When I say I tested all the components I mean I REALLY tested them. I did both tests from the Haynes manual and from various sources off this site.
I am almost at the point of getting it towed to the shop, which I really do not want to do. A day before this happened I degreased the engine and VERY carefully sprayed it off with water. In the process I am thinking I may have damaged something?
I have a 97 F250 HD. Wiring the rear tail lights. When we bought it the had cut off the wires going to both sides of the rear lighting assemblys and I was wondering what wire went to what i have the left turn signal working just can't seem to get the brake/back up light to work on that side and i can't figure out how to get the right side going either.
View 8 RepliesI am trying to add courtesy lights to the existing reflectors in the front doors of my supercab. I can't find a wiring diagram that shows where to connect the light sockets. 1999 F250 SD...
View 2 RepliesI just bought a hard to start 1990 F250. Per the board, just replaced all 8 glow plugs with Motorcraft. Still wouldn't start (it turns over but will only start if you use either). I attempted to install a new BWD brand (Borg Warner I believe) glow plug connector relay today...I removed the old no problem, but am unsure what wires to plug where....the only connection that I'm sure about is the blue wire that works the WTS feature...it plugs in easily but I don't know if there are other connections that need to be made or not? All the wires run from the posts and into the bottom of the unit.
View 2 RepliesI'm trying to find out what the two connectors in the image are.. I've looked through the manual that I have and searched around on the web and find nothing.
They're on a 2015 F250. "upfitter" switches were installed from the factory.
I recently had need of replacing my left exhaust manifold on a 2000 F250 4 x 4. I removed plastic inner fender well. Now I have a two pin harness with both white wires. One is white with red stripe, the other is white with black stripe. The harness is round with a locking square on one side. The harness is located about 10" from bottom of inner left plastic fender panel. It has 2 mounting pegs. Where the heck does this connect?
View 13 RepliesI have a friend of mine that has a 1983 and he had me change the water pump in it because it started leaking and it has been sitting for 7 Months now. I changed that but I can't get this bugger to start. I used to be a mechanic in a past life so I know what I'm doing most of the time so let me explain what has transpired here.
I attached my remote starter, turned on the key and cranked over the engine after shooting a little bit of starting fluid in the carb and she cranks over but won't start. I then pulled the #1 spark plug out and then did the same thing to check for spark and nada. I put my light tester on the coil and there was power. I have run into this kind of problem years ago with other vehicles so I thought I would just go ahead and replace the Coil and also the Control Module. After replacing these parts, still no spark. Since the distributor is there only to distribute the spark (meaning no electrical connections to it) I'm assuming that the Pick Up part that is down by the Crank shaft might be bad.
How to test either the Control Module or the pick up. I'm trying to diagnose this problem without needing to remove the module and taking them to the parts house for testing. (long drive). These wires should have 12 volts when the key is off and these wires should have 12 volts when the key is on.... and so on.
I recently bought a 92 F250 and love it but the blinkers will not work. I have replaced both flashers and the multifunction switch. (the wipers had issues too that were fixed by the switch...) Now what? Im at a loss..
View 7 RepliesMy work truck is an 03 F250 5.3L. My flashers recently stopped working. I turn them on, and they will work anywhere from 5 seconds to a few minutes, then either blink rapidly and shut off, stay solid for a few seconds and shut off, or just shut off. I push the switch off and on again, and the cycle repeats. All my other lights and turn signals work fine with no issues.
This wouldn't be a huge issue, but where I work I need the flashers a lot. The truck has a bar light and siren/pa system wired into it, but not to the lights or anywhere near that. I can't say exactly how it's wired because I didn't install it, but I followed the wires and they don't go under the steering wheel where I would assume the relay and wires for flashers would be.
What sounds like is wrong? I wouldn't think it would be the relay because then I would think that I would be having problems with more than just the flashers. So I'm not sure if there would just be a ground issue or if it's the actual switch that turns on the hazards. Also, there are no lights that are burnt out.
I have a 1979 f-250 4x4 with a 351m. The problem I am having is my starter keeps running after the truck starts and also after I shut off the key. I didn't get the battery unhooked in time today and it completely melted the lug off on the solenoid, but the other wires were barley warm. What could be causing this problem? The battery is new, the cables are new and the Sol. was new. Maybe the switch or the starter?
View 8 RepliesI have a 1991 idi diesel f250. My dash lights have entirely gone out and i cannot seem to figure out why, i checked the fueses under the driver dash and under the hood for that matter and nothing is blown.
At the same time, the dome lights, door lights, cab lights, stereo, windows, ever the light in the ash trey etc, work perfectly fine. Could a wire have come loose behind the dash cluster and shorted out everything in the driver area?
I still get the high beam signal, check engine, engine, wait to start, and water in fuel light in the cluster. but no back lighting (when turning the key to the on position)...
2002 f250 v10 4x4. Truck will loose all power...
View 10 RepliesI have a '97 F250 diesel and the battery light keeps coming on and off. The volt meter shows a good charge. How do I fix this?
View 4 RepliesI have an 86 f250 i just bought back with no spark. this truck is not original. used to be a diesel. has a 400 out of 81 f250. had this truck running just fine 4 years ago. sold it to a guy running and bought it back 4 yrs later not running.
Checked all the connection to make sure they r clean. Had the ignition modular tested and tested good. I have 12+ volts from the white and red wire. I have a little over 6 volts at the bat side of the coil. I have no spark from the coil. I notice every time I connect and disconnected the bat cable I will get a spark from the coil. i ran a test light from the tack test sight on the coil and tried to start and the light stayed real dim and never flickered.
I bought a truck recently and I am attempting to get the alternator to charge. A previous owner hacked up the wiring pretty badly. We found that they had connected the voltage regulator to the horn relay for some reason. Anyway, I am trying to get it rewired and have searched existing threads for info and I thought that I had the wiring sorted out, however it is still not charging the battery.
The alternator has been tested and works. The voltage regulator is new. This is how it is currently wired.
Regulator A Terminal --> Battery side of started solenoid --> Alternator Batt Post
Regulator F Terminal --> Alternator Fld Post
Regulator S Terminal --> Alternator Sta Post
Regulator I Terminal --> Empty
Regulator body --> Radiator Support --> Alternator Ground Post --> Neg batt
When running, the battery is showing about 11.8 and slowly dropping as it runs. The truck has an ammeter in the dash, however it looks like it is no longer connected. Does it need to be connected in order for the alternator to charge the battery?
I have a '99 psd f250 crew cab lariat, I just purchased seats from a 2005 F350 that are lariat heated and power. My seats are power but non heated is there a way to hook everything up.
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