Ford F-150 - 1997-2003 :: OBD2 Port Stopped Working - Fuse Not Blown
Mar 6, 2016
My 03 5.4 the obd2 port isnt working i have tried 4 bluetooth adapters and a snap on scanner and nothing will connect to the ecm. im having problems and trying to read codes my check engine light isnt on but that don't mean anything. my truck is running really rich and blows a little bit black smoke when i rev it up after its been idling a few min and getting horrible gas mileage again. yesterday i went to start it and i had to crank on it 4 time before it finally started and then when i reved it up it almost died on the way back down but it caught itself. then today i go out and it starts right up and runs fine but its still running rich but i still cant get an obd2 adapter to connect to the ecm. I checked the fuse and its not blown my cigarette plug and the power port both work. i really dont know where to start in trying to figure out this problem. Right now iI don't really want to take it to a shop right now.
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I just picked up a 99 F150 for a song because it has an issue with the PATS system and the po doesn't have a clue on what to do with it. I bought a new ignition cylinder and Auto Enginuity to program the PATS. The problem I'm having is that I'm not getting anything from the OBD2 port and the #3 fuse is good. What else would cause the port not to have signal?
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Cigarette lighter works and shared fuse seems fine. OBD port even powers up my cheapo elm bluetooth reader. Unfortunately multiple different readers refuse to connect. I've tried disconnecting negative terminal for a half hour and trying again but no luck.
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Am i correct in starting to look into why I can't hook a scanner or Torque Pro bluetooth up to my truck and starting with blown Cig lighter fuse? (Cig lighter doesnt work, power port does)
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1997 F150 xlt 4x4 ... When I shift the gear shift lever to below D (2-1) it blows a fuse and I lose instruments. Replacing the fuse is not difficult, just tiresome..
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Blown fuse causing a lack of power to the OBD port?
I just got my Kiwi2 BT OBD2 adapter and was hoping to start diagnosing my truck, but the adapter won't power on while connected to the truck.
I pulled and visually inspected fuse #12, I also verified power to the cigarette lighter plug and the accessory 12v power outlet.
The adapter powered up with no problem when I connected to a co-worker's Tacoma.
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I don't know what to try next. I have a short somewhere, just don't know how to track it down. I checked the fuse for the drivers seat and it was blown. I stuck a new one in and the thing blew as soon as I stuck it in. I disconnected the seat motors, plugged in a fuse and it blew again as soon as I stuck it in. How to track this down?
I don't see any worn or shorted wires under the seat. I checked under the passenger side kick panel per another post I found, but that looks fine. I don't know where to look or what to test.
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Where is the OBD2 port?
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I have a 92 caprice 5.7. Vehicle had suddenly stopped ... Providing fuel to the tbi. I immediately checked relays etc all were good. Then I figured it had to be the pump because I didn't hear the whirl of the pump with the key forward engine not cranking. I replaced the fuel pump. Still same problem no fuel. I found the 20 amp fuse blown that sits next to the 2 relays. I replace the fuse then the fuel pump got energized as I cranked the engine it almost started but then the fuse blew again. I have a short in the circuit I believe. I don't have a wiring diagram,what else is on the fuel pump circuit so I can have a direction to start in to find a probable bad wire.
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I have a 1997 Expedition that every time I replace the #16 fuse it blows when the high beams are on. It seems that it happens only when in drive and accelerating from a stopped position. I wonder if it could be either the clock spring or the multi-switch cause the short. I checked the wires on the headlights and they are fine. Again the high beams work when the truck is sitting still and the fuse is new.
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corrected vaccum leak. Still high idle and obd2 code 1506???
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I've had a 0401 code on my truck for the last two years. I've replaced the EGR valve and the dpfe sensor a couple of times, with fomoco parts. Ive also cleaned out the egr tube that comes off the exhaust manifold. In this time I also discovered a couple of vacuum leaks and replaced those. I changed the pcv valve, tried running 93 octane gas, and had a mechanic friend run a special smoke through the vacuum lines to find more leaks. Also put a brand new gas cap. I have an obd computer and cleared the code repeatedly but the light always returns.
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So I added in a set of LED lights for my license plate and parking lights. In addition to HID's for the headlights tonight. At some point my tails/parking & license plate lights shut off. I assume its a fuse, I'm wondering if this is common or the result of low quality product.
I've used the same installer/lights on every car I've had for the last 5 yrs and never an issue. No issues in my Scion Xd, Mustangs and so on.
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I drove my truck 2 times the day it stopped running. The 3rd time I tried to leave it started moved about 2 ft, spit and sputtered and died. It had blown the fuel pump fuse. I changed it and checked the fuel shut -off in the cab, passenger side. It was not tripped. Tried to start it and as soon as I turned the key it blew the fuse again. I changed the fuse again and this time I changed the fuel relay and the switch in the cab. Turned the key and it blew the fuse right away. Went to AutoZone because they are close to the house described what it was doing to them and they said sounds like a short in the fuel pump.
I purchased a new pump put it in turned key blew the fuse, pump just clicked...I found this site and my son noticed a thread where it said wires under the cab are good for wearing through and grounding out. I looked and it did wear through one wire coating. We taped it up, put extra cover over it and now it does not blow any fuses. Fuel pump still just clicked. Took fuel pump back for an exchange.....same thing. Turns over but fuel pump will not pump fuel. What am I missing?......
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My 2007 F150's turn signals and hazard lights quit working. I checked the fuse and it was blown. Once I pulled the old fuse out the truck wouldn't start at all. What happened?
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Weird deal here, the backup light fuse blows on a 1999 Neon and the AC quits blowing cold. I replace the fuse and the AC starts blowing cold. I found out this is the #8 fuse, 10 amp and it controls the rear window heat, fan relay, ac cycling switch and backup lights.
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I have a 2009 Prius with the Aux port in the center console. It has stopped working unless you jiggle the cable. Need to get a replacement?
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I have a 2003 F150. My horn and cruise both stopped working. All fuses are OK. Cruise controls are on steering wheel (as is horn). Why both would stop working???
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Last week my door locks just stopped working so I checked all the fuses and relays which all were good but still no power took door panels off and checked with tester and no power to switches or actuators, Checked wiring in between door and cab and no broken or bare wires. This truck does have remotes and they don't work either, what's going on ?
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Where to decipher engine codes? I pulled a P0001 Fuel Volume Regulator Control Circuit Open code .
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today all of the sudden my ford f150 5.4 liters speedometer started to not work and the airbag light came on while it was having trouble shifting! the windshield wipers don't work as well! checked all fuses! after messing around with smacking things under the hood it started to shift right but has a glitch in the electrical and it sounds like it's trying to start( this is while it's running) it's all glitchy...
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