Ford 7.3L Power Stroke (1999-2003) :: Left Turn Signal Was Blinking Fast / Loud Buzzing Sound
Mar 22, 2017
I've been having an electrical issue for the past few months that I've decided to address now that the weather is getting a little warmer.
What happened is the left turn signal was blinking fast, so I assumed bad bulb, and later that day it stopped blinking fast and now I press the lever down to indicate a left turn and there is a quite loud buzzing sound. Sounds like it's coming from where the relays are, but I've replaced them and the bulbs and still nothing has changed.
I've also replaced the multifunction switch to see if that was an issue, but a new one did the same thing so I returned it.
Running lights work all around, but now there are no left blinkers, and also my left brake light doesn't come on. Pulling a trailer I have the same problem, I had the plug tested and only 3 of the pins have anything to them.
I know nothing about auto electrical systems.
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After disassembling what felt like the whole front end of the truck, I finally gain access to the danged thing. Mine has been acting up intermittently for about year and half I guess. When flipping to switch to signal turning, it started making a buzzing sound. At first it was doing it most of the time. Then it cleared up and started working right for several months, then act up, the act right. Well, now it makes the buzzing noise more often than not so i decided to address it. I went to Oreilly, they didn't have one, but told me the part number.
I went across the street to Autozone, that had one on the shelf that was same part number as Oreilly. I put it in and when flipping the switch, the relay does it tick tock sounds like its working, except for there is no indication on the dash cluster that its working, nor are the actual lights working. I swap back to original and buzzing, put in new one and tick tock but no lights. Whats the deal? Is this one of those things that you have to go back to Ford? Or maybe i got a bum relay from parts house and should exchange for another to see if it works?
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While I know this has been covered before, I could not find anything pertinent to 2011-2015 model years.
So, I changed my turn signals to LEDs, and now I have the fast-blink behavior. I realize this is because of the significantly decreased amperage and resistance of the LED modules. I did a similar mod on my 2007, and simply found a replacement low-current blinker relay (on eBay, I think), and replaced it (it was physically located behind the extra small glove box near the middle of the dash.
My questions are, 1) for a 2015, should I use the same method of replacing the blinker relay? 2) Any brand and model that will work for this application and/or where one can be purchased and 3) Where is that relay located on the 2015 model? If not, should resistors be used?
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So...I'm driving home yesterday and hit my left turn signal when all I get is a fast clicking sound. The light on the dash did not light up at all. Right signal is working fine.
Checked it out in the driveway -- my left signal is totally out. No front, rear or dash light when I hit the left turn signal. When I hit the hazard switch, I get only a right blinking light. The right turn signal functions as normal.
I thought this was probably a bad bulb so I replaced both the front AND the rear bulbs. Got no love - same results.
2008 Prius...
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I have a 72 F250. When I put the left turn signal on and apply the brakes, the signal stops blinking. I checked the bulb and it was fine. What is the likely cause?
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The other day i noticed my turn signal was blinking rapidly. I found that my drivers side bulb was burned out. I am trying to convert most of my lights to LEDs on my truck and figured that I'd replaced the tail lights with LEDs. After replacing both rear taillights with LEDS I still have the rapid blinking turn signal. Whats the deal? is it just the LEDS or what?
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I've recently picked up a new noise. At idle the engine buzzes. It sounds like the vacuum pump running but coming from the engine (the vacuum pump is not running while this noise is happening). This noise could also be happening while I'm driving too but the RPMs bring up the engine noise so I can't tell. Nothing looks out of the ordinary and I haven't done anything different that would give me any direction (no off-roading). It was just there one day.
The truck doesn't seem to be running any differently (right now), just the buzzing. I just want to catch it if it's going to become something serious. An ounce of prevention is worth a pound of cure (not to mention the towing bill!).
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2003 SCrew, 5.4, auto, 4x4.... Yesterday my left turn signal started flashing fast; checked and the front was not flashing. Picked up a new bulb, changed it, didn't fix anything.
I've tried:
-tilt wheel up/down in all settings-no change
-checked the wiring at the top of the column; still good and solid.
-swapped the bulbs left to right and vice versa-no change.
-swapped the sockets left to right and vice versa-no change.
Other info:
-the left front is the only one not flashing with hazards on.
-all original equipment, except I removed the stock side mirrors (w/signal) and installed manual trailer towing mirrors, but that was 2 or 3 years ago.
-the dash indicator light for left turn (arrow) does not come on at all.
-last trailer tow was over a month ago and all was good.
I ran out of daylight last night and at work now so I would like know which Fuse, Flasher, Relay, etc., I should check/replace and where to find them on the truck; under the hood (1st or 2nd stack of the fuse blocks); under the dash above the pedals; steering column???
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I have had a 2000 f250 crew cab for little over a year now. Two previous times, after heavy rains, the cabin light would blink on and i would get a buzzing sound under the dash. I would solve the annoying buzzing sound by opening and closing the door. After a few times, it would work, but my clock and radio could go on without the key in the on position. The next time i used it, no problems... so i put that worry in the back of my mind.
This morning it rained really heavy, sideways type of rain. I opened the door and noticed a small puddle on the vinyl floors right where my left foot goes. OH,oh i thought, but the truck turned over and ran like normal. I picked up a heavy load of hickory in the bed and hopped back in and noticed my speedometer jumping from 0- 30 when I was going about 35. The OD light was blinking, but the transmission shifted normally. I got up to about 1700 rpm and the speedo was barely jumping at 53-55. I make another stop to unload the wood and go back home and i get an intermittent buzzing sound on the way home and no speedo. OD light would start blinking before i hit 2nd gear. I also noticed the odometer not working (speedo related, right?)
I got home and took the fuse relay cover off and found that if I would remove the #1 relay "plug" (black square box 5 prongs) that dreaded buzzing sound would go away, checked it out , plugged it back in, buzzing back on. The clock light still stays on and radio will turn on without the key. I think that water obviously leaked in over something electrical and i have been searching this and other forms for a couple of hours. I am within a couple of weeks of saving up enough to buy the gauges, exhaust and possible DP Tuner and now this happens?
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My wife's '07 has that fast-blink thing going on with the left turn signal. The thing is, none of the bulbs are out. It does appear that the front ones are dimmer than the ones on the right (which work fine).
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I know that the relay will make the turn signals flash fast when a bulb is out or there is a broken circuit, but I am not sure about how the brake light switch is causing this condition. I need to go and check all connections and bulbs, but I see nothing obvious at this point. When the brake pedal is NOT depressed, I get the normal interval of the turn signal. As soon as I touch the brake pedal, it begins to cycle very fast. Remove foot from pedal, and it goes back to normal.
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On the final stages of prepping my truck for sale. I noticed today that occasionally while making a right hand turn the signal light will not work when you put the lever in the locked position (no dashboard arrow to the right and no front/rear light). I can pull the stalk upward, but not lock it, and it always works correctly. I am thinking a bit of corrosion on a switch, but I thought I would check and see if others have run into this.
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I've got a loud, intermittent, swooshing, vibrating noise from the front left wheel area at highway speeds. I put a camera down there and saw that when there was noise, the front driveshaft and front left halfshaft were spinning. When they stopped spinning on their own, the noise stopped. Hubs are Warn Premium (gold) and unlocked. Unit bearing already replaced. What could it be?
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My power steering is only working when i turn it to the left. When I turn it to the right i have to get a 1/4 of a turn in until the power steering takes over. So i get under my truck to discover what seems to be a piece of my tranny missing. How screwed am I ???
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Pulled out of the restaurant I ate dinner at tonight and I lost most power and there's a loud air sucking sound. I felt around all the boots and didn't feel any air, but it was really hot and couldn't feel a whole bunch. It's a 2003 7.3 with 295k. There is a little smoke/soot coming from the turbo area, any chance that's related? I'm perplexed...
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My 97 F150 4X4 's turn signal flasher buzzes all the time except when brake is depressed or turn signals or hazard signals are active. The flasher is a 5 prong one. What to check?
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My truck is a 1999 F-250 Super Duty 7.3 diesel. My left turn signal is fine. My right turn signal is going fast. The rear blinker lights up, but the front does not. So... no brainer... change the front bulb. I did. Twice. Sylvania 3157. It did not fix the problem...
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I've had a rattling/clunking sound from my front left wheel recently so I jacked up that corner. As soon as the tire elevated off the ground the bottom fell inward. I could easily push the top of the tire inward and pull the bottom of the tire outward. Does this lead to a bad hub or bad ball joint(s)?
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I have a 97 Buick Regal with turn signal issues. The left side will not flash but stays lit and the right side flashes fast. I have the problem isolated to the Daytime Running Light Module. (replaced turn signal stalk, flasher and bulbs). I ran a jumper wire bypassing the module and everything works as it should. Do I need to replace this module, or can I simply bypass it without it messing anything else up. I don't want my horn going off when I change the station on the radio.
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So my '01 E350 has been fine but tonight when I went to start it I didn't get a WTS light and the SES light was on and there was a weird number on my PHP Hydra that looked like r5 ? This happened a few times back to back so I tried starting it and it just cranked and cranked. Wtf? So I started pushing the button on the chip and all of the sudden I got the WTS light and the hydra flashed, now the chip was on tune 10 instead of 5 where it was when I parked it. I should also note that during these episodes there was a fairly loud clicking/clunking sound coming from the drivers front under the hood when I toggle the key on.. Sounds like maybe a relay? Louder than I recall ever hearing.
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I have a 2000 Ford X diesel with the 7.3 engine. About 2 years ago whenever I would drive it during the summer, and I would shut it off and then a few minutes later tried starting it again, it would start. It doesn't even turn over or making a clicking sound but it acts like the motor is dead. The lights and all the electrical work, but it doesn't turn over at all. It will start back whenever it cools down. It doesn't happen during the winter time or when its cool outside, only when the weather is hot. I've replaced both batteries and the starter but nothing happens. Tonight it did it again and I have to wait 20-30 minutes in the parking lot until it would start again.
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