Ford Super Duty (1999-2016) :: Screeching Sound Only Happens When In Gear (auto) Moving Forward Or In Reverse
May 30, 2013
My 2001 F250 5.4 has started to make a screeching sound. It only happens when it is in gear (auto) moving forwards or in reverse, and increases in pitch relative to engine speed rather than road speed, and is much more noticeable under mild to moderate acceleration. Maybe I actually mean transmission input speed?
When simply maintaining road speed, it is almost silent. Anyway, if I drop it into neutral while driving, the sound stops, and starts again when I put it back into gear.
From the drivers seat and with the windows closed, it sounds as though it is coming from the engine bay at steering column height, although this is really tough to gauge while actually looking where I am going. With windows open, it comes from both sides of the vehicle.
1st thought is tranny......
2nd thought is a water pump bearing, although there are no apparent cooling problems or leaks.
3rd thought is the alternator bearing, although there are no charging problems.
I say alternator because I recently changed the serpentine belt and noticed that the alternator made a very faint screech-like sound when spun without the belt on it. The main screech was there before I changed the belt. Maybe it gets really loud under load?
So I'm kinda scratching my bean and wondering what expensive piece of mechanics I'm going to shell out for next. If it's #2 or #3, I can do those myself, but if it's #1.... it likely means more money than I have to spare.
I did wonder about removing the serpentine belt and driving a very short distance (end of the driveway and back) to see if I can remove the pulleys, tensioner or other belt driven parts from the equation. Maybe this is not such a smart idea. I'm somewhat at a loss right now.
View 2 Replies
Advertisement
So today I was backing up my 11000# fifth wheel at the campground when at 1500-2000 rpm I hear this awful shrieking sound coming from under the hood. I heard it the whole time while backing up and under a load. I never heard it once going forward. So when I get home I put it in reverse and hold the brakes and again I hear this shrieking sound coming from under the hood I get it up to 1500 rpms or so not moving just holding it and the more throttle i apply the louder the shrieking gets.
Now remember the truck is not moving its just spooled up, holding the brakes. I think that maybe something is wrong with the turbo, but I dont want to jump to conclusions. This truck is a 2001 F350 SRW CC LB 7.3 161,000 2 owner miles, 4 inch turbo back FLO PRO Straight pipe, and gauges everything else stock. What is moving that is making this horrible sound.
View 1 Replies
2011 F250 6.7L Powerstroke, automatic tranny, Electric Locking Diff
When I engage the On the Fly 4WD switch the indicator panel says "shift to 4x4H in Progress" and everything seems fine but if I am not moving forward when I shift the 4WD doesn't engage. The engine revs up but nothing happens. When I release the accelerator the transfer case bangs like it is going to rip out of the truck. In reverse it is even worse. I am lucky that I didn't gun it or I could have done allot of potential damage. All my other Ford 4WD vehicles engage immediately from a full stopped position. This is quite of troublesome because if you have to shift when your stuck in the mud, your still stuck. If I shift while moving forward it works just fine.
My question is: Does this particular model (2011 F250 6.7L Powerstroke with an automatic tranny) have to be moving forward in order for the 4WD to engage?
View 3 Replies
Have 2001 F-250 7.3 PSD, automatic, ESOF (had to replace the original hubs with Warns)have kept up the maintenance,oil, grease, ATF fluid & filter, truck has been virtually trouble free. About 2 weeks ago I decided to go across an area of the lawn, as I was going (in 2 wheel drive)I felt the tires spin a little so I stopped got out and locked the hubs, got back in truck turned t-case to 4 high. had to rock the truck out of a damp area but nothing really.
So I got back to where I came in at (in reverse about 100') stopped put it back in 2 wheel drive, tried to go forward, very difficult, sluggish, got back in driveway had to back the truck in, will not go forward at all now. Checked all fuses, rapped the the t-case motor, no codes. So I thought I'd move the ruck, have a winch that will pull it out by the barn, I could not even move the truck forward by pulling it with a winch. As I said have never had any problems with truck. Transmission fluid is good, clean no burnt smell.
View 14 Replies
It seems its the 4R100 tranny non pto of course and 2wd version. I drove down the rd. after bleeding the brakes, new caliper front right, came home let it idle for about 10 min, shut her down. Went to move it about an hour later, it went into reverse no problem, then when put it in Drive it revved like it was in neutral. There was no banging, no clunking, nothing to make it seem like something catastrophic happened.
I then did a line pressure test and Reverse was fine 200 psi for sure, in drive mode however it was low like around 50 but had to rev real high to get it to 150 like 3/4 pedal and it would want to seem to go forward at a crawl but nothing more. Next I did the obvious and cheked the fluid, it was about 1/4 quart low so added a bit. The fluid did not stink and was beautiful red like new.
I then tried again... no dice same scenario. Then took off the pan, no metal chunks and virtually no dust on the magnet??? Ok so I figure maybe something with the shift valves? Took them all off and the accumulators as well, all check ***** were in place and all valves moved freely.
Now onto the the solenoid pack, checked all per manual for ohms and all were perfect reads at about 27 Ohms, except the EPC solenoid that is the big one on the pack, it should read about 3-5 ohms but this guy is about 12.5 ohms.
I spoke to a tranny shop in town and they said it would not be the EPC and that I could "unplug" the solenoid pack and It would still move forward without it but not to drive like this as line pressure would skyrocket?
Why this thing would have 200 lbs pressure for reverse and so little for forward I mean? that should mean that the pump is working great, if there was a broken something metal I figured I would hear something rubbing or banging or see some shavings? Can this be a "worn out" valve? or gasket issue?
View 1 Replies
I have a problem. 2002 F-350 4R100 tranny. Put a reman transmission in about 30000kms ago. pulled excellent with no problems. shut it off for night. In the morning it had absolutly no forward and a little bit of slipping reverse for a few minutes now it is totally dead. No movement either way. The OD on off flashed a few times but not anymore. Put a Genisys scanner on and no codes at all. What could be the issue?
View 14 Replies
My F450 2010 class C motor home has the V10 engine. In the RPM range of about 2200 - 2300, there is a screeching sound I believe is from the engine area. It does not matter what transmission gear I'm in thus the vehicle speed is not a factor - only happens in that engine RPM range. Seems to happen when slowly accelerating or decelerating through the 2200 - 2300 RPM range or continues to screech if I maintain that RPM. If I drop back or increase RPM out of the range it quits. If I accelerate thru the range a little quicker it doesn't happen. Also does not happen when parked and the engine is sped up.
View 7 Replies
Ive got a 04 f350 that after u shift into 4hi or 4lo when u accelerate it it makes loud clunk noise in fwd or reverse hi or lo. With hubs unlocked it still clunks. Have checked, wheel bearings, axle U-joints, and driveshaft joints all good. So I am thinking I've got issues in t-case. Popped drain plug out and wow that dex merc 4 looks nasty. So thinking I need exploded view of transfer case.
View 4 Replies
I have a 1999 ford f250 5.4 2 wheel drive i believe its a 4r100 transmission. auto. I have reverse but no forward gears. Ive heard this is a common problem , and on my reverse it has to hit 3000 rpm before it even tries to move and D 1 2 i have nothing only thing i hear is the engine sound changes gets deeper. Do i need a whole new transmission or is this fixable.
View 4 Replies
Drove the wife to work this morning. The turn off into town there was a lady stuck so I pulled over in the drifts. After putting in back in gear I had to get on it to get out of the drifts. Snow was blowing over the windshield, and I imagine throughout the engine bay.
After that it felt like it stayed in 2/3rd gear. I'd hit the pedal and it would redline and sort of accelerate jumping in and out of gears. So i slowed down to a stop. Accelerated slow and it was ok but when I got more on the pedal it would feel like it was slipping. Once I got in the driveway, she idled for about 15 mins while I shoveled out my spot. Once putting in gear again I had to rev it up for it to move.
Also reverse, had to rev it up to move it.
View 2 Replies
I've got a 2003 Accent and my automatic transmission went out, no reverse and the only forward gear is 1st. Was thinking of pulling it and swapping it for a used, but I have been reading on here the many, many automatic transmission problems of the accent and my next thought was to just rebuild it myself. But now I'm thinking more along the of a swap from auto to manual, as I don't want to have to rebuild a transmission that is only going to have to be rebuilt again anyway. As far as stuff like the clutch pedal, linkages, gear shifter, I can get those pretty easily. Does the Accent have a hydraulic clutch?
View 2 Replies
So as of 2 weeks ago there is a popping sound coming from somewhere behind the cab when I'm turning in reverse. Its intermittent and only happens once or twice when I'm pulling out of a parking spot. It doesn't happen every time. Probably about 4 times a week but it only happens when its cold and been sitting. It doesn't happen when I'm driving in 2wd or 4wd. I was wondering what it could be and if its gonna be something I can afford to hold off on for awhile.
View 9 Replies
Ok, I've seen a post or two about this issue of rear end chatter on the super duty But not that many so I am going to ask a question here and now......what causes/allows this to happen and what purpose does it serve? also, does it cause any damage to the gear head? or any other part of the rear end?
My truck tends to do this from time to time when I am plowing snow (only when backing up, or at least so far) and I really can't relate it to condition other than maybe the fact that pushing snow may cause the gear oil to get hotter than normal driving and thins out and causes this?
View 2 Replies
I installed a reverse camera to my new Pioneer in-dash nav head unit this morning. I wired (at the rear of the truck) the power signal lead to the reverse wire at the trailer connector. I also need to wire a reverse signal input into the back of the head unit. I really do not want to run a power lead from the rear of the truck to the cab. Is there a wire under the dash I can tap into, or could I use the wire going to the backup alarm that’s somewhere under the dash (if I can find it). 2010 F350 deisel, crew cab, 4WD, long bed.
View 9 Replies
I have a 2000 F-550 w/7.3 and a 6 speed ZF transmission. My problem is that when you go to shift into any gear inc. reverse the transmission stays in 5th gear. I pulled the shifter and tried to do it from top of transmission it still stays in 5th. Any thoughts that I could possibly check?
View 1 Replies
I have been having trouble with my 2008 Ford F250 4x4, 6.4 liter diesel transmission. SCT tuner, 10" lift, egg delete and dp delete has been done. I have been losing power mainly in reverse but have noticed that the transmission hasn't always been going into the last gear on the interstate. Code PO741 would come up. The other day the shifter was stuck. So I played with it and found that the cable on the transmission had fallen off. After replacing it. The transmission wouldn't go into reverse but has been doing semi good in forward. Well I have been limping it around until today when I was going down the road and it completely stopped pulling. Now no matter what gear I place it in, it will on go in reverse. What could be causing these issues or where to even begin to start looking?
View 3 Replies
I continuously read that people with 6.2 F250s averaging 13 mpg or so in a combination city/highway driving. This 2014 4x4 barely has enough power to move itself (honestly, I'd rather have my Ram 1500 back) and barely gets 10mpg. Basically have to give it about half-pedal to even get up to freeway speed and floor it if i want to pass anything. Is it just that much of a POS or does this not sound right? Other than a massive "clunk" sound when shifting from reverse to drive or vice versa, no indication of any problems.
View 14 Replies
2001 f250 7.3L......
Haven't had it long, but when I am in gear and come to a stop i hear/feel this sound coming from what seems to be under my feet. I don't know how else to describe it other than it sounds like a woodpecker is tapping on the floor.
If I put it in neutral it stops. As soon as i let off the brake it stops. It doesn't do it while driving.
View 6 Replies
Noticed this morning that the truck appears to have a screeching/grinding noise while going straight down the road. If I go a bit of speed and stop the engine and exhaust from revving and making noise and just let it roll I can hear it and hear it better by sticking my head out my window. My engine and 5" straight pipe hide it well while im going though. I think its coming from my front driver side but im not 100% exactly sure. What it could be? I know there are a lot of variables to cover but any ways to check things out? Also! I can hear it slightly while reversing slowly.
View 8 Replies
I recently pulled the stock tp38 off. The reason for rebuilding is the turbo started making an awful screeching on start up and shutdown when the compressor is at a low rpm and starts to wobble.
The shaft has 1/2 in and out play with 1/8 in every direction. the compressor has some wear marks but no chips, the turbine has some good chunks missing. from what i can see there are no marks on the housings.
What should i put in it as far as new compressor and turbine/shaft. nothing that requires machining. I am not looking to run more boost or anything, just looking to reduce spool up time if possible. Any specific rebuild kit? what turbine and compressor should I go with?
View 3 Replies
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?
View 5 Replies
