Ford Super Duty (1999-2016) :: 2004 F250 - Tachometer Reading High
Jul 15, 2015
I recently (2 weeks ago) picked up my first Effie, a 2004 RN F250 Supercab XLT 5.4L 4x4 auto (dual Fuel Petrol/ LPG).
One of the things I am exploring is a problem with the tachometer reading high. I read on a thread somewhere on the forum that it was most likely that the earth of the tach plug was not connected. (It was a great thread but I can't seem to relocate it)
I am still chasing a workshop manual to get wiring diagrams, etc. In the mean time, where to locate the said plug/ earth connection?
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Just had a question about my 00 F250 7.3. I recently have noticed that my tachometer needle will not always move the way its supposed to. Sometimes it will sit at zero until I drive it for a min then all of a sudden pops up to where its supposed to be. I also noticed today that while i was driving it just dropped to zero for a second or two then back up to where it was supposed to be again.
When it does this there is no drivability issues with it or idle issues what so ever. Which is strange to me and I cannot seem to put my finger on what could be causing the issue. As I have searched online for a while to no avail as most of the other issues include drivability and idle issues. Also not that it matters but I have recently replace the cps sensor with a new one OEM of course but i don't think that has anything to do with this problem.
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The tach in my 01 F250 PSD has become intermittent. It works properly some of the time, not at all some of the time, and jumps up and down some of the time.
Does it get it's signal from the CPS? It has a blue CPS that's about a year old and the truck runs fine?
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Got a weird one today. Everything was fine all day. Got the old girl smogged this afternoon and made one more quick stop. Got back on the freeway and up to speed and looked down. Speedo said I was 90? Yeah right. I was going with the flow.
So I plugged in my bluetooth ALDL dongle and fired up OBD Link. Well, OBD Link showed normal and accurate speeds. As did a second app on my phone for giving speed. So my VSS must be working correctly.
So my speedo is showing about 25 over actual. When the ignition if off the needle sits between 20 and 25. so did my speedo take a dump? Is there anything else I might try to see if it auto-calibrates?
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I have an 04 F250 6.0L and for the last month or so when I turn on my AC it makes a high screetching noise but only last for a little bit. Had a friend that works on cars on the side take a look at it one day and he said it was the AC cutch trying to engage. Does this sound like what it could be? Also if it is can it be changed out without having to remove the compressor? What all is involved in changing it out?
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I was cruising my truck down the road and noticed that my high beam indicator light was very dimly lit. I wondered why this would all of the sudden come on at all if the high beams were not on so I pulled over and took a walk to the front of my truck to check my headlights. Sure enough the passenger light was very dim. (I must assume the high beam indicator light being dimly lit is also an indicator for headlight malfunction/burn out)
I figured out the plug has a keeper piece that is supposed to hold it in the bulb base but it was broken off and missing.
I went to the auto parts store to find some kind of fix. To my surprise they have a replacement plug for my truck. The down side is it costs $95 and it still had to be shipped! I decided I could figure something else out.
After I pulled the four 5.5 millimeter screws out of the headlight housing. I noticed there is enough room on either side of the light contacts to drill a hole thru the plug and the bulb to allow a pin to be placed thru both of them which would keep the plug and bulb socket from coming apart.
These are the pins or keepers I used.
A 1/16" drill bit did the job. I put the new bulb/socket and the plug together and drilled a hole on each side of the plug right thru the socket at the same time far enough back and at a width to avoid the contacts of the bulb socket and plug. (there is a rubber gasket in the plug that should be avoided but if you still knick it as I did you can fill the plug or the socket with dielectric grease that most car parts stores have and it will keep any moisture out but not effect the electrical current, do not use silicone, one day you will have to take it back apart for a bulb replacement or something.)
This is the bulb socket with the holes already drilled and the plug removed. This is what it looks like with the bulb/socket and the plug together and the keepers in place. And the back of the composite headlight housing with the assembly installed.
Make sure you install the bulb/socket and plug with keepers on the housing before you bolt the housing to the truck because there is not enough room to get your hands behind the housing to install the keepers with the housing bolted to the truck.
Since I replaced the stock bulb with a Sylvania Silver star I had to replace the driver side too so I didn't end up with a headlight being brighter or "whiter" than the other. Even though I was incredibly careful I still broke the plug on the driver side too! So now both of my headlights now have this mod on them.
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I just bought a 06 F250 King Ranch and the information center on the gauge cluster just shows the current odometer reading. When I press the information button that is supposed to toggle between trip mileage and avg mpg just the odometer shows. This truck was vandalized (bought from auction) so I am wondering does it have a XL cluster so I am asking are all the clusters different between XL, XLT, Lariat, King Ranch, etc and I have the wrong one installed or maybe there is an issues with my information center.
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I've been battling this high temp issue for a bit now. Here's the recap on my truck.
2005 F250 6.0
120k miles
Edge insight CTS2
New factory Oil cooler
motorcraft coolant -system flushed
Stock EGR- No leakage
Deltas 3-5 degree apart no A/C on
A/C works great!
-Issue- When I turn the A/C on city on normal driving no loads or towing. The temps have gone up as high as 230 eot 230 etc. Ambient temps 83-90F ....
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I have a 2006 F-250 Super Duty (6 liter diesel). The high beams stay on unless I pull the fuse (fuse 30). It doesn't matter what position the headlight switch is in. It is like the high beam flash on the multi-function switch is stuck. It feels fine, but high beams stay on regardless of position, even with the truck off. The low beams (if in low beam when the truck is shut off) do go out as do the running lights after 15 or so seconds (normal) it's just the high beams. Also the high beam indicator light is on all the time (until I pull the fuse) and the fog lights will not come on until I pull the fuse. Should I replace the multifunction switch or look elsewhere?
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My dad has a 2000 f250 4x4 with the 5.4. he said his blower would only blow on high. I told him it was his blower motor resistor. i thought it was under glove box. he took it apart and said no but there was a little box thing with wires he took off anyway and put back on. I then told him it was under hood below a/c lines. he replaced old one with a new one from auto zone and replaced the pigtail( plug too) fan works on high and a little bit on low very very little when u switch it to medium it stays the same. High works great. So we replaced the fan switch. (Radio was a bitch to remove) and it still does the same thing. I checked all fuses . when I check the plug at the resistor there is power to the center pin it stays on when u switch to low and medium but when u turn high on power goes out( on test meter) is there something I am missing? the blower blows on high even when u remove the plug from the resistor. Is that normal?.
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So today pulling out of the gas station I turned my steering wheel to the left and I heard a high pitch squeal from the drivers side. It wouldn't do it again unless I was just creeping, nothing going down the road. I did a few searches on here but they all are if the truck is moving say 30 mph or better. I know I need to replace my ball joints. 99 F250, V10, 4X4, extended cab.
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My windshield washer has recently just sprayed up about a foot.
Will adding some vinegar to the fluid and see if it will unclog?
Or does this just mean that my pump is giving up?
'99 F250 SD V10
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What color wire controls the high beams?
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I just changed out my IAC. Truck is still idling too high. When I squeeze the host to the IAC it idles down. When I unplug the IAC the truck immediately dies.
Does the IAC talk to the the Throttle position sensor? Should this be my next part to change?
2002 F250 5.4L ....
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My uncles 1999 v10 started to leak from the high-pressure hose on the gearbox. Replaced the hose which lasted for a short time but is now leaking at the same spot. The hose swivels, is this normal, seems like a dumb design for a pressure hose. Also is there a certain trick to doing this hose? He also insists on using PS fluid instead of the ATF it calls for. Could this cause a problem with the seal?
Edit: Also the truck has been lifted on 35s since 16k miles and its now roughly at 170k. He tows with it as it is his work truck. But the truck is well taken care of.
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My tachometer hangs out around the 600 RPM spot when I first start my truck, but lately it will end up dropping to zero when idling, and then bounce up to about the 200 RPM point when accelerating. Its not the Cam Positioning Sensor (I had that happen with my 99 7.3) and this truck runs great. I am thinking it could be at the tach.
Question is: Where does the Tachometer signal generate and does the PCM do anything with it before it sends the signal to the Tachometer? The reason for focusing on the Tach is since the engine runs and idles fine, then that tells me the PCM is receiving the correct signal from the engine and making changes accordingly. I read about a 5.4 gas engine with rain issues, but the only issues going on here is extreme cold (tonight, -15). I keep the truck garaged and when I go out, it is for purpose and then return home to a heated garage.
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I just had some custom headlights built for my truck. I have noticed if I am on low beam with fogs on, switch to high fogs go off, switch back to low, and fogs come on but highs stay engaged until I turn off fogs, the go low beam... I have heard this has happened before with other trucks and that it was called a Bambi something? And that there was a possible fix...
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I have a 2010 f250 6.4 About two months ago the truck just quite on me. I am a farmer in south jersey and have a decent background in diesel motors. First thing that came to mind was fuel. I assumed I was having a fuel issue (clogged filters, failed pump, etc.) truck only had 45,000 miles on it so I took it to my local dealership for what I assumed would be a warranty job. I dealer service all my trucks while under warranty. Long story short I was told it was a fuel contamination issue which scared the walls of the hpfp throwing metal pieces into the injectors, fouling them.
I would need all new injectors, fuel rails etc. as well as new filter housings, fuel tank cleaning, etc. I had receipts for every drop of fuel put in the vehicle and fought all the way to through the dealership to Ford who sent out a rep and who denied the warranty work. Fortunately my insurance company covered the ordeal and all repairs were completed. I got the truck back and 2 weeks later the truck died on me again. I called the dealership back who supposedly warranted the repairs but there first words were there is no way it is their problem, they would look at it but I have to consent that if they find it is contamination again I am responsible for the repairs which we all know just to diagnose they have to remove the cab etc.
I of course lost my mind and told them this is there issue and there is no way in hell I am that unlucky that I received 2 bad tanks of fuel from 2 different high volume highway side fuel stations in the same 2 months. it is obvious they missed something or there is another issue that was not addressed. They claim there is no way they missed something. I am at a standstill.
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I have an 2001 F250 SD with 7.3 Diesel. Headlight switch failed and I replaced it. But now I have no high beams and my dash lights that light the dash up don't work. Gauges, fog light, low beams all work fine. Fuses checked. Multi function switch checked. What to do next?
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So basically I thought it would be a great idea to degrease my motor from the top down.... After washing I start it up and drive down the road to head abunch of misfiring under heavy load or high rpm's.
My problem is that the misfiring won't throw a code. I then proceeded to buy a new ignition coil (thinking this was the problem) but with no code to go off which cylinder was bad I just switched the good ignition coil into each cylinder and starting it.
Up each time. None of them seemed to make it better. Also the injectors all seemed to be good. So what to do ?
2002 Ford F-250 5.4l
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I have a 2010 F250 super duty. I use it for work so I am not sure what happened to it as others have driven it, but here is the issue. When i start it up in 2wd, the 4x4 Low light flashes continually. If I turn the switch to 4x4 high, the 4x4 high light flashes continually. if i turn it to 4x4 low, that light flashes continually. I have read the forums but haven't been able to find the problem/diagnosis for this.
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