Ford 7.3L Power Stroke (1999-2003) :: Flasher Relay Constantly Clicking
Aug 29, 2016
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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2001 F-350, 7.3L,
Has done this off & on for a few years and am tired of it! Noise is kind of a buzzing that seems to come from the flasher/turn signal relay. It stops buzzing when you turn on a turn signal, activate the flashers, or lift up on the shifter arm(?). Had to drive home yesterday with the flashers on! So I see from researching that it may actually be the multi-funtion switch on the steering column. So I removed that, cleaned up all the contacts, and put it back on and the buzzing did not go away.
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I have a 2002 Mercury sable and have a problem with power windows. When you hit the driver's door window up button, you hear a relay constantly clicking under the dash, fealing the relays up there it seems to be one of the top 2 in the bank of 4 at the top of the fuse box feeling for vibration as it clicks. Any of the other buttons results in a single click then nothing and if the door's open as it was when I worked on it,the door chime stops and no window buttons make clicks or anything until I hit the driver's door up button again. Now if I pull one of the relays I mentioned, hitting the window up and down buttons from the driver's door does make the relay click once when pressed, once when released.
Am I correct in thinking this is a power window relay under the hood, voltage seems alright where I checked it but not having a wiring diagram or anything I have no clue what's what I only checked as well as I could from the fuse box. Another interesting issue which we've had off and on for a while now is when you put the car in gear, it will ding for about 3 minutes, seems more like an hour. No lights or anything, is this all related and I'm all wet on the window relay, or do I have something else going on here?
I need the windows to open, I got sick of replacing AC compressors so pulled it out so we have no AC, it gets hot in there fast. I couldn't care less about the dinging if that's unrelated, the windows worked last I knew which was only a few weeks ago, that dinging was something it did in the fall when someone ever so nicely broke in to the car making the driver's door no longer lock with the electric locks, another problem I can't find but that wasn't a huge concern, that door's obviously been apart many times in the past so I'm not the first to have problems with it.
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This relay is clicking about once a second, and the car won't start (it doesn't even turn over). Disconnecting and reconnecting the battery doesn't seem to have an effect, but I did notice that it seems to stop for a few seconds when I open the door. What's going on?
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My vacuum pump I noticed is running constantly and also my vents are stuck on defrost.
I narrowed it down by taking off the lines going from the tank to the 4x4 solenoid and the tank to the HVAC line. If I plug both lines I get pressure to both but it still won't shut the pump off. Why won't the pump shut off? Leaky tank?
If I plug the red line back into the solenoid I cannot get pressure to come out of the HVAC line. (Switch in cab set in 2wd)
I can make the pump shut off by plugging the main inlet to the pump.
I took the tank out and can't find any cracks or leaks. Could something inside the tank be broke?
Also why can't I get pressure when the red line is plugged into the selinoid?
I can't figure it out. Almost seems like the 4x4 solenoid and the tank are both the problem.
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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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So I have had this occasional hiccup that has gotten more frequent. I figured since our weather has been extra cold (lows about 15 F, around 22 F in the morning), that the temperature had been contributing to the issue. My truck would hiccup and burp out some white smoke. At first it didn't throw a check engine or any codes. As of recently I would get a check engine light, but torque pro could not get any codes, they would be cleared when I cycled the key. Anyways, I finally got some codes yesterday because it happened again. The codes where P0603 and P0344.
So I ordered 2 new CPS from Riffraff yesterday (hoping that they will be here today so I can install one). Fast forward to this morning and i get the hiccup again except worse. Now my truck would barely reach 20mph and it constantly bucked. I limped my way to work (only 4 miles) and of course I got a check engine light but there were no codes that I could retrieve with Torque Pro again. I had read on another thread that the guy had an issue with a wire in the harness near the 42pin connector for the IDM. He replaced his CPS taped up the wire and it went away.
I'm at work and now I'm paranoid that I wont be able to make it home. Is there anything temporary I can do for the CPS, like maybe disconnect it and spray it with some contact cleaner, until I can replace it? I'm going to trace the wire harness to make sure there aren't any bare wires. I forgot to mention that the local stealership replaced the CPS for free due to recall less than 3000 miles ago...
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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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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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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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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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After installing new glow plugs, glow plug relay, and valve cover gaskets my 2000 7.3 is throwing the 1395 code. Glow plug monitor Bank 1. Any input as to cause? Checked all connections to relay. All tight. Read something about fusible link. Where that is located? One side of relay reads 0 volts.
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Does Delayed Accessory Relay 306 control radio on an 02 F-350?
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I have a 7.3 Excursion, 234K Miles, 4R100 Transmission. Today I was in a rush to take one of our dogs to the vet, when I hit overdrive going up a hill, it almost sounded like a clicking noise and I was steadily losing power. I came to a stop sign and put it in park and it started to develop a constant lope that was rough. Whenever I would step on the gas it would put out white smoke which it has never done before. I was able to take it a couple miles before it did the same thing except this time it shut itself off.
Recently I have been having transmission issues as it feels im losing first gear. A while back I noticed it would idle slightly in park every now and then. A couple days before this happened, I came to a stop and my truck started loping slightly and first gear IN DRIVE felt very very weak. I have recently replaced the cam position sensor as well as the ICP sensor. I'm at a loss, I plan to do a ZF6 transmission swap very soon and this is only making me panic even more.
I never dog the truck, take it mudding, etc. Oil is changed every 3-4,000 miles. I did however get it scanned a while back and I believe two codes came up for two pistons, also did an injector buzz test and they all sounded strong.
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2003 7.3, AC compressor clicks like crazy. Can he hear outside the vehicle while idling?
The round disc on the front of it is what is making the noise.
The AC used to work awesome but now only blows cool air for about 10 minutes then turns lukewarm.
Is the clutch on my compressor bad? I have heard they can be adjusted, but not sure how.
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So I have recently did a body swap on my 7.3 I rolled. Put a body from another one this one. Before I took the old body off the engine ran fine. Nothing wrong at all.
Now that I have the new body on, I am stuck with a fuel shutoff switch. I read that it is suppose to be pressed down, but when it is pressed down, I turn the key and 4 relays under the hood click rapidly, 2 under the dash, and the drive side blinker blinks? Anyway, when I push it up, and turn the key, all the lights come on normally, wait to start light comes on. It'll crank good, the battery's are good, had them tested and fully charged. Checked ando triple check all battery connections and grounds. Anyway, it'll crank and want to start it fire up for a second and die. The low pressure oil gauge on the dash doesn't go up, but I think I broke the sensor connector for that. The fuel pump doesn't make any noise, the fuel bowl has fuel in it, but does fill up with fuel. So I'm thinking the fuel pump is somehow shorted out, so when I depress the fuel shutoff switch it makes everything go crazy. But even then the fuel pump doesn't make any noise?
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I was hearing a clicking noise on my passenger front wheel when rotating by hand.
Paul suggested I remove the ESOF hub and see if it is the wheel hub or the ESOF hub. It's the ESOF hub.
So I'd like to rebuild it for sure, it also has a nicked o-ring, so that accounts for part of the vacuum leak
I'd like to service the driver's side, too, while I'm at it. It doesn't exhibit any issues, so just regular maintenance stuff there.
Parts lists?
As always, I'll take pics in return
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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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When starting, rapid clicking like failing batteries. Had dealer install new Motorcraft batteries, and it's still happening. Clicks when i turn the key and then labors while turning over for 20 seconds. Sometimes it takes 2 or three times before it starts. I put in a rebuilt alternater 5 years ago. It seems like a fuel problem, but I'm guessing.
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