Ford F-150 (2004-2008) :: Truck Trailer Connection Has No Power To + Pin / Relay Missing
Jan 14, 2009
My truck trailer connection has no power to the + pin, called the Trailer Tow Battery Charge. I traced back to the fuses and relays and discovered the relay missing. Unbelievably Ford is having a hard time with this relay. They don't seem to be sure which one it is. My owner's manual says it is a Full ISO relay. But Ford doesn't like that description.
What can I use there? Is there any after market relay available that would fit. Napa said they don't have anything listed, and O'Reilly and Autozone look at me with a stupid expression. I also need one for the starter relay. Mine was replaced with a anti theft device that has a remote control. I want that removed so I need the realy.
All the relays appear to be the same. I plugged in the blower motor relay in the trailer tow charge position and got power to the + pin. But I need the blower motor. The Ford guy said that it might be the right one, but he couldn't be certain and if I plug it in and it doesn't work it's my loss.
This is for the 2006 F-150, 4.6l truck.
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2007 F-150 4x4 reg cab
Trying to get my trailer plug to work. Don't have a owners manual. Looked in fuse box, fuses 104 , 114 , 107 and 118 are missing?
Need to know what they are? Also look for fuse numbers that have anything to do with trailer plug.
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I took it to the dealer and they blamed the trailer. I told them that I have pulled two different trailers and it did it with both. Then he said that the trailer was not heavy enough to weigh down the springs. So now I not suppose to tow an empty trailer? Also my father in law has pulled the trailer with his Z71 with no shake and the other belongs to a neighbor with a 98 F150 with no shake. The vibration only starts above 45mph. Any clue as to what could be causing this?
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After returning from about a 5 hr roadtrip, I backed my snowmobile trailer up my steep driveway in 4wd and the truck did not want to move after that. The truck is an '05 SCREW 4X4 5.4L with about 110,000 miles on it. Trailer is probably around 1,000 lbs with the snowmobile on it.
The driveway is steep and short. That combined with the 90 degree turn to get in and some uneven terrain and part the path onto slippery frozen grass makes for a bit of a rodeo trip backwards up the driveway with a trailer.
Anyway, after getting the trailer up into it's place, I unhooked it, switched back to 2wd, disengaged the parking brake, and put it into drive. The truck didn't roll which was weird as it's now in drive pointed down hill. With about 1/4 - 1/3 throttle, it crept forward. Again, this is down hill. I got out walked around the truck (make sure I didn't forget to unhook anything etc) and tried again. Same thing.
Once I made it to the fairly level street, the truck would still only move, barely, with about 1/4 - 1/3 throttle. Now it was like some of the wheels were free but at least one had to break traction with the pavement to allow the truck to move forward. So with constant pressure on the accelerator it would chirp one or more of the wheels a bit at a time as it crept forward. Acted like it was in some sort of imaginary tug of war. After about 40' of driving it worked itself out. I've driven about 10 miles since and seems just fine.
I'm concerned because I plan to do this frequently with this trailer and in the summer frequently with a boat weighing about 3,500 lbs although shouldn't need 4wd in the summer.
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I have a 2008 XL 4.2 auto trans with 60,000 miles on it. We purchased a new travel trailer with a total weight just under 5000 lbs that we pulled for about 2000 miles this summer. On the last trip we noticed the truck was missing pretty bad going up hills or under load. After we got home I started to notice the miss at times even not towing. Did a tune up with Motocraft plus and wires and seems to still have a miss at an idle and very low RPM. What would be best to check next?? Would Coil be logical?
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My trailers lights aren't working at all- so frustrated right now!! I've checked all the fuses and those are good, I've got no power back to the 7 pin connector...
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Inconsistent connection through 7 wire plug and no taillights on four wire plug.
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I just did my plugs in my 04 F150 5.4 The truck had a really bad miss, and I figured it was time for plugs. I broke all eight plugs which I expected as the plugs were in there since new and had 120 000 miles on them. Replaced with champion double platinum and I am not certain that was the best idea.
The truck is much better with the new plugs but still has a miss and a rough vibration. The truck seems to shake side to side at idle but smooths out during normal driving conditions. I have noticed that it seems to lack power intermittently if that makes any sense. Also, the check engine light was on for a while but I tracked that down to a broken wire in the evap system.
So I am thinking first step is to verify that the coils and boots were installed correctly. I have to see if we have the scope module for the Genisys at work. I am going to check for vacuum leaks as well. I just changed the fuel filter and no change. Is there anything else I should look at? Would cam phasers cause a rough idle and intermittent loss of power?
I don't drive this truck every day so I can take it apart to diagnose it further...
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Can't find my manual and getting ready to haul camper in an hour...no trailer parking lamp power on truckside plug. No blown fuse but heard there may be a relay.
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My friend has a 98 ranger that has a lose connection on fuel relay under the hood, Hit a bad bump truck dies, Pop hood wiggle wire and your good till next bump. This got real old real quick. How this connection is made, Is it soldered?
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On our way home from North Carolina, we stopped for lunch. When walking back to the truck, I noticed a huge oil puddle underneath the truck. It took about a quart to bring it to the middle line on the stick. Kept driving it home with oil blowing underneath the truck and covering the travel trailer (very unhappy wife!!). Where to look? It looks like it's coming from the valley and pouring down the back. I just replaced the oil cooler when I did the egr delete. I used about 1.25 gallons on the way home.
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My left turn signals have went out again on the rear of my truck and trailer. I replaced a body control module about three months ago and now its done it again. It has not blown any fuses. Why this is happening.
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2013 CCLB, 33,500 miles, stock emissions
While towing a 9000 pound trailer at interstate speeds (75 to 80 in Wyoming), when pulling a hill, the truck downshifts to 4th gear, boost is about 18psi, eng and transmission temps in the 230F range, EGTs around 500C or 935F. RPM increases normally to 3000 then the turbo gets very loud and boost drops to about 10psi. The truck shifts to 5th gear, noise decreases but is still present, shifts to 6th and noise goes to normal after a couple seconds and boost builds normally.
This just started today. I have about 8000 miles towing this trailer and never had this before. I have about 350 miles until I'm home so I'm headed back out. Will play around with manual mode and see what it does. I also took a video of the gauges while this happens. Audio is difficult to discern. I will try to get better audio and post when I get home.
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I have a 2004 f150 fx4. My running lights on my trailer will not come on. Brake lights work, turn signals work, back up lights work. Had my boat mechanic check the trailer and that showed that the lights work fine. So I started checking fuses on the truck. Fuses all looked good. Then I went into the Auxiliary Relay Box in the engine compartment on the left fender. In the spot marked Trailer Tow Park Lamps (R201), theres no relay. R202 is for the Fog lamps, same relay. I pulled the Fog Lamp relay out and went to put in R201 for Trailer lamps, but there's no contacts in the R201 slots. The relay goes in with ease and just falls out. No contacts. Whats going on?
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I recently purchased a 2006, 4x4, low mileage and when towing a trailer the truck develops vibration right at 52 mph. Dealer has not found the problem.
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Exactly where the parking lamp trailer tow relay is located on a 2002 F-250 Super Duty 4X4 CC 7.3L?
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I have a 2007 f-150 fx4 supercab with the 5.4, it has about 37,500 miles on it. Yesterday I hooked up my trailer with no more than 800lbs of lawn mowers and as soon as I was on my way I heard a terrible rattling noise coming from the truck or the trailer. I unhooked the trailer and drove up and down the driveway and heard no noise, hooked the trailer back up and right away the rattle came back. At this point I hooked up the trailer to my dad's truck hoping it was the trailer and I drove it around the neighborhood hoping to hear the noise. No noise. So I hooked back up to my truck to drive home and the noise came right back and was even worse.
The noise was a rattling noise which I would say sounded like bb's rattling around in something, which had/has my thinking catalytic converter but no check engine light or anything has popped up. Also the noise doesn't happen unless the truck is hooked up to my little trailer with weight that I consider insignificant. So my question is could it be the catalytic converter and the the light load causes it and it will eventually occur all the time, or could it be something else that I'm not considering. I'm going to try to get it into a local mechanic but with it being the end of the month he's probably swamped with inspections. I don't want to drive it until I know what it is because I don't want to do damage to the truck.
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Over the past year, I have had an issue with the front end shaking on my F150.
I have a 5 x 10 trailer. Weight capacity is roughly 2200 pounds. I hook up my trailer empty and head down the road. When I hit about 55 mph and above, the front end starts bouncing/shaking/vibrating.
Now I put a load on the trailer. Get going down the road. Hit those same speeds - no shaking/bouncing/vibrating. I have had a mechanic ride with me to check it out. First place to start, he told me, jack it up and see if anything is loose. I have not done that yet.
He has the same opinion as I do. This makes no sense. No load, shakes. Load, no shakes. You would think it would be opposite.
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Does the 2008 rx model have a usb connection/port? My mother recently purchased a 2011 and they have a great usb port in the middle console. I didnt see one on my 2008 (with navigation).
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My friend had his 2008 F150 Limited washed and they apparently decided to pressure wash the engine.
Now the check engine light is on, and it runs like crap. At least yesterday, today it won't even start.
What is broken? The codes said something about the throttle body?
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I have a 2006 F250 6.0L. Just had a used motor with 108k miles put in. Had the motor studded, fire ringed, new injectors, new glow plugs, new radiator fluid filter system installed, had egr delete done, ficm board replaced, fuel pump replaced, a few other small items replaced as well. The problem I'm having is the truck runs like it has a miss until it warms up.
After that, it runs fine. It takes about 10/15 miles of driving before it runs like it should. Letting it run in the driveway for 10/15 minutes to warm up doesn't make a difference. When the truck starts, it lopes at an idle for about 5 mins before turbo kicks in & starts whistling. When I start driving it shakes & feels like it has no power until it warms up. Then you'd never know anything was wrong. Put way too much $ into the truck so far and can't keep going.
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