Ford 7.3L Power Stroke (1999-2003) :: Keeps Blowing 15A Starter Relay Coil Fuse
Jul 29, 2016
Upon trying to start my 2003 f250, it keeps blowing the 15A "Transmission Range Sensor then to Starter Relay Coil" fuse. Initially the truck would still start if i did not use the aftermarket Viper keyless start. however, now it doesn't start at all and keeps blowing fuses. I contacted the guy that installed the alarm thinking it might be something on his end. He walked me through reconnecting the factory starter wires which would isolate the issue if it was something on his end. it's still blowing fuses. battery terminals are good and clean.
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I had a problem with this issue a few months ago, was 45 minutes away from home, blew the fuse to the starter. Switched another one in, blew it too. Had it towed to a shop, they did some diagnostics, felt like it was a short in the starter, replaced it and all has been well (as far as that particular issue) until this morning. Got in it, turned the key it cranked for less than a second and stopped. I pull the fuse, sure enough, blown. Swap it with another, it blows.
I know I have a bare wire in the column, the OD light wire is chaffed, I fixed it before but it must be worn again because I can get it to light up depending on positioning of the shifter lever and as I recall, every time the fuse blows the steering wheel is cranked to the left.
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Any pic or wiring diagram of the starter relay that is mounted to the fender. I'm trying to start the truck finally but it's just cranking and I think I might have mixed up the wiring. Is there supposed to be a constant hot at the glow plug relay when the ignition is off?
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Batteries charged, connection & cables checked. After turning ignition switch, gauges on dash jump around & starts clicking in fuse panel. Top left relay then clicking sound from beside steering column on right side next to trailer brake box. Been having electrical issues & something draining batteries...had absolutely no cold start this winter. No decent mechanics here other than to be ripped a new one @ local dealership.
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I have a 2001 F-450 SD with 7.3. What the problems would for the blowing of fuse #3. The DLC fuse. I mean I know it goes to the cigarette lighter as well. but when not in use it still blows.
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i have a 99 f350 psd, my problem is i don't have normal; FONT-SIZE: 100%; COLOR: dark green; FONT-FAMILY: inherit">parking</NOBR> and instrument lights, it blows fuse number 8 as soon as i turn the switch on. i checked all the wiring on my tail lights and the trailer hookups. i even disconnected the wiring harness going my tail lights and trailer hookups and it still blows the switch. #8 fuse is trailer tow electronic brake, illumination, park lamps, trailer tow park lamp relay coil. it also blows #4 fuse which is trailer tow backup lamps, trailer tow park lamps.
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Need to diagnose this before I start ripping wires:
Truck started blowing the # 8 fuse under the hood tonight (15 amp #8 - trailer tow electronic brake illumination, park lamps, trailer tow park lamp relay coil fuse) which also controls the dash board lights (can't see gauges at night) and the tail light lights (brakes lights work) are out too. Figure I have a short somewhere.
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I have a 95 f-250 psd with factory remote keyless entry. about 3 weeks ago i had a fuse blow that powers the keyless entry module, speed control, and a number of other systems.
If I replaced the fuse it blew right away so i got my wiring diagrams out and started unplugging parts of the circuit and my last attempt was to unplug the keyless entry module. presto no blown fuse so i got a module from a junk yard fixed the problem and now it has happened again. same exact thing. unhook the module and no blown fuse. i took the first module apart and saw no burned parts and no visible damage but here i am blowing fuses with no door locks, dome light and a few other things.
The fuse that blows is fuse 8. I am a mechanic and have full access to anything I need. I have another module under warantee but I want to be sure that its not something other than the module causing problems.
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I have an 03 6.0 F250. My truck started blowing fuse #45 and it would kill my gauges (fuel, oil, mph, rpm, temp, trans temp, and odometer) and I was just replacing the fuse and putting off the repair.
However, the most recent time my gauges blew, the fuse did not, and I put in a 20 amp fuse, in hopes that it would not blow so quickly, bad idea. So naturally, I ordered a new shift lever, in hopes that it would fix the gauges and I wouldn't have to deal with it anymore, but I think it was too late and something else needs to be replaced. What I could possibly have blown by having a larger fuse in there?
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Just bought a used 15 F-250 with 57,000 miles, yesterday tried to start it and nothing happened. Checked the starter fuse and it was blown, replaced it and it immediately blew when i tried to start the truck. Pulled the starter and had it tested and it was good, replaced the relay and still blowing fuses. I have got it to start a couple of times but as soon as you kill the engine and try to restart it blows the fuse. What was the fix? Truck had no problems trying to start before this problem started.....
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2002 F450 7.3 Turbo
Ok first problem : Starter Motor fuse kept blowing and I spent weeks trying to figure it out. No luck. so wired up a push button just to get the truck started, its a work truck so it was needed asap.
2nd problem : he truck stopped starting completely. Wont start in Park or neutral and after a NEW STARTER (because I thought the solenoid on the starter was bad I replaced it) Everything work correctly for one start with the key. After the second time trying to start it blew the starter fuse again. So I tried the straight wiring to starter. still nothing. I was wondering if there are any shims or anything at the transmission housing to correctly position the starter. I am thinking that maybe the gear is stuck or gets stuck sometimes. when I straight wire the starter it does nothing but the wire gets hot so I know its pulling.
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Ihave a 2008 E 350 6.0 , while driving i hit a small pothole no big deal the van stops running and coasts to the side of the road. get her towed. The dash lights show the PATS is engaged so it is no start no crank.
The 30 amp fuse PCM power relay is blown. when i replace it it blows as soon as i turn the key. im checking for wire chafing but so far have found none.
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I have a 1999 F-250 SuperDuty with a 7.3L. I need to replace the field coil on my AC compressor due to a broken connector (long story). After I remove the belt and compressor clutch, what is the next step to get the pulley off so that I can then replace the field coil? I am a computer geek by trade so I need clear steps. I looked on youtube, but all I found was how to adjust or replace the compressor clutch or the entire compressor.
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While doing a visual inspection I noticed that the AIH hot wire (captured nut wire) had broken off and was laying loose. I removed the wire from the relay and made a new 8 gauge wire, I connected it to the relay and was about to add it to the AIH when I got a healthy spark ( it touched the ground wire ) and yes the truck was not running and the key was out at the time.
This sounds to me like the relay has gone south, am I right??? I have a new OEM relay to install but I have a question. In what order are the wires and ceramic fitting go on the AIH post???
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I recently got a ranger from my buddy and it keeps blowing the EEC fuse in the engine compartment. We have replaced the EEC relay and the EEC power relay. As soon as you turn the key it is blowing the fuse.
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The relay for the fuel pump keeps going bad. Is this a sign my fuel pump is going ? I just replaced my 2nd relay ( lasted about 1 week ) 1st lasted 16 years. Or is there another issue to look at ?
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I have searched everywhere for the location of the blinker relay on my 02 F-250 7.3 and getting mixed results and still not found.
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I purchased one of the No Start relay for my 2000 Ford F-250 Turbo diesel and need assistance finding the relay to replace.
Originally I thought it was for the fuel pump then then discovered it replaces the ignition relay.
According to the company it's located on the passenger side under the hood. Can't find any fuses there.
I looked in the user manual and found nothing about an ignition relay. Just "PCM Relay Coil, Ignition Coil (Gasoline only), Fuel Heater (Diesel only), Wastegate Solenoid (Diesel only), Injector Driver Module Relay Coil"
The relay I purchased is from: "No Start" Relay, "No-Start" Intelligent Relay System, Vehicle Theft Deterrent
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Had a weird issue come up this weekend. I went to drive my truck for the first time in a couple of weeks and when I got in I noticed a constant clicking from under the dash (whether the truck was on, off or if the indicators / hazard lights were on or off). I investigated and found it was my flasher relay. I have replaced this relay recently (within the past year) to an EP27L to accommodate the LED lighting I installed throughout the truck (hyper flash on the old relay doesn't even describe it properly, it was a constant buzz!) and it has been working perfectly until this point.
I thought it may just be something going on with the relay so I pulled it and replaced with the old EP27 unit I still had. It does the same thing, albeit at a slower rate (every 4-5 seconds). The lights do not blink when it is doing this, but still operate normally when I move my stalk up or down or when I press the hazard / flasher button on top of the steering column.
I am wondering if there is a short somewhere in my multifunction switch that is causing this issue? If so, why would it come up when truck has been sat? I didn't have the time, not the inclination to roll around inside my truck (hotter than hades here in Florida right now) to troubleshoot any further. I pulled the relay altogether until I get some time and cooler weather to look into it further. Otherwise the truck seems to operate as normal, even all the lighting seems to have no ill effects from this?
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I purchased a 94 Ford Explorer 4x4 4.0L w/ Automatic transmission with Overdrive. Great work truck, but I am finding that these had a lot of wiring problems. First thing that messed up with me is the backup lights wouldn't work. Then the dash lights and parking lights stopped working (Still no fuses where bad). Then about 2 weeks later, I was on my way home when It just died like someone had turned the switch off, I pulled off the side of the Interstate, and after checking my fuses/Relays under the hood.
I found that the EEC Fuse (30AMP-BIG Fuse) had blowed, I didn't have one and the truck wasn't off the road good, So I wrapped a small wire around the fuse to see if I could start it and get it out of the road better, It started right up, but soon as I pulled it off the road it died again, and I found that it melted the EEC Relay, I went to the parts store and got a new relay and fuse and put them in, It blows the fuse as soon as I put it in, with the switch off or on. I just need to know what things will cause this so I can check them out one by one, until I find the one that is causing this problem, cause It run great up till this happen.
Only other thing I may need to let you know, Is when I bought it, the key switch would start it, The guy had put a push button starter switch that you push to start it with the key on, I unhooked it, and it started fine with the key for a while then it stopped again, so I had to hook the push button back up and had been using it until it stop running with me.
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Alright so I have a 99 7.3l. One day I went to start my truck and when I turn the key to the on position all is normal and then when I turn it all the way to crank it nothing happens. I hear a relay click ann thed that's it. Me and a buddy of mine spent quite some time on going through the entire truck. The starter was replaced, the neutral safety switch was replaced and the ignition switch was replaced yet the problem is still there. We then discovered that fuse #20 under the dash keeps blowing with every turn of the key. The manual states that this fuse is a starter motor relay coil PCM ( gasoline only). So if it's gas only why is it even in there. Let me just say that I can jump the fender mounted relay and the truck starts.
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