Ford 7.3L Power Stroke (1999-2003) :: Shuddering Low Gear Acceleration When Towing Heavy?
2002 F350 7.3, MANUAL transmission ZF6.
Bought this truck used for hauling an excavator, and after fixing damn-near everything engine/turbo/and-cooling-system-related ---- it's finally seeing some use.
Just recently started hauling 12,000lb payloads. When I accelerate hard in Low gear, and then shift into 1st and accelerate hard again, I feel the whole truck shuddering. It's like a shimmy-shaking vibration all through the vehicle.
It doesn't happen in higher gears, only when the following conditions are met...
1) Starting from a dead stop
2) 12,000lb payload (heavy)
3) Accelerating hard (Low, First gear)
I would also like to add that I experienced this shuddering vibration very intensely when I put the transfer case in 4wd LOW (front manual hubs left unlocked) and towed 14,000lb up a steep hill in 1st, 2nd, and then 3rd transmission gears.
^^^ By leaving front hubs unlocked and transfer case in 4wd LOW, I was effectively lowering my final drive ratio even more for extra pulling power in 2wd hill-climbing. I don't do this often, only when absolutely necessary. ^^^
I must also add that I do have slightly taller rims/tires than OEM ford WITH the original ford gearing (3.73) so I'm more like 3.51 final drive ratio.
02 F350 7.3l ZF6
Ford 7.3L Power Stroke (1999-2003) :: Zf-6 Trans - Slips Under Heavy Acceleration In 6th Gear?
Ok, my clutch has been giving me trouble for a little bit and I'm almost positive that I have a bent release fork. It also slips under heavy acceleration in 6th gear. I am planning on doing a clutch, compete with flywheel and release fork and a new rear main seal. My problem is, here within the last couple of days the trans would pop out of 4th gear if I was just coasting. It has been getting noisy over the last few weeks also. I'm no manual tyranny expert, but this is making me think I'm gonna need to have it rebuilt.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Smoke / White Haze Under Heavy Acceleration On Occasions
My truck 00' 7.3 255k is smoking white. It's not thick its more of a white haze. Sometimes it does it sometimes it doesn't. It has a 6637 intake, exhaust, and wicked wheel. No tuner or such. Im thinking either the turbo is going out or maybe a leaky injector? Just checked the turbo wheel and it has a little side to side play. On start up itll puff white then go away but then under heavy acceleration on occasion there is a haze of white then goes to haze of black. It also feels like the truck is lacking some power. There is no oil in the coolant or coolant in the oil. Not consuming oil or coolant. And there is no excessive pressure coming out of the oil fill.
View 8 RepliesFord 7.3L Power Stroke (1999-2003) :: Heavy Smoke At Start - High Idle?
Here's the deal. 99 Powerstroke out new injectors and orings. Did orings twice to make sure i didn't damage it. New turbo, new utvc gasket, new ipr, new fuel pump, I new complete engine wire harness. I pulled the injectors and ran in another truck no problem. New injector cups compression was all in the 300-375 range. Any cold start smokes like hell. Goes away when driving after the first time of hitting boost. Spits and shudders for a few seconds until boosting. Every time I stop it starts smoking again at idle. No power loss not using oil. Can't get a grasp on this smoking issue. When cold start I kill millions of mosquitos in a one-mile radius.
View 3 RepliesFord 7.3L Power Stroke (1999-2003) :: High Pitched Siren Like Sound While Accelerating
I just wrapped up a full day's worth of tear down/reassembly chasing an oil leak at the turbo pedestal. while I had the turbo out I replaced the pedestal with a non-ebpv pedestal and replaced the outlet with a high flow outlet. I also removed the stock exhaust and replaced it with a 4" Turbo Back from MRPB. Once I got everything put back together I hit the highway to check out the new exhaust.
To my horror I started to hear a high pitched airhorn-like sound while accelerating. It sounds a lot like an old police siren... I'm wondering if this sounds like a turbo or simply a boost leak. I obviously had everything taken apart so a boost leak seems likely (still original boots with 191,000 miles). I've ordered new boots from RiffRaff but wanted to make sure it didn't sound like an exploding turbo and that I could safely drive it until I can fix the old boots.
Take a look (listen) at the video : [URL] ....
Ford 7.3L Power Stroke (1999-2003) :: High Pitched Squealing / Scraping Sound - Loss Of Power Towing Uphill
Towing a 5th wheel at about 10,000 lbs total. Towards the end of out 9 hour trip home and going upgrade the truck begins to loos power and the engine starts making some bad sounds. Although its hard to hear it starts about 45 seconds in and continues later when going uphill. the truck also made a very high pitched squealing/scraping sound (not a belt) like it may have been coming from the turbo. Oil temp was about 220, trans temp at 170 at the time of the event.
Truck has 216k, stock, upgraded trans cooler, original fuel pump.
Here is the video : YouTube.....
Ford 6.0L Power Stroke Diesel :: 2005 - High Pitch Squeal / Turbo Has Been Sticking After Hard Acceleration
For a month or two now my truck has been making a squeal and the turbo has been sticking after hard acceleration. The sticking was a woebegone unison ring and I was hoping the squeal would be resolved when I cleaned the turbo but it didn't, in fact, it got worse.
It used to be occasionally and go away after warming up, but now it's more constant than not. It goes away when the VGT does its idle cycle and once you get up to speed.
Here's the sound - YouTube.....
Ford Super Duty (1999-2016) :: 2001 F350 V10 - High Pitched Whine Appear / Disappear
I'm having an issue with my 2001 F350 V10. A seriously annoying high pitched whining noise appeared a while ago, then disappeared, and has now come back.
It happens as soon as I start my truck, whether it's cold or warmed up already. it increases in pitch and loudness as I increase RPM, it also does exactly the same in neutral. As soon as I put it in gear (R, D, 2, 1) it completely disappears and will come back as soon as I shift back to P or N. Strangely, if I drive around town for a few minutes, when I get back home and shift to park the sound doesn't really come back, sometimes it will be faint but usually it's totally gone. But if I shut the truck off and turn it right back on again then it's there again.
It's coming from somewhere in the engine compartment or close but due to the nature of the sound it's very difficult to locate. I got underneath using a screwdriver as a stethoscope and listened to the transmission, transfer case, starter, oil pan and even the gastank and it doesn't sound like it's coming directly from any of them. While underneath I noticed power steering fluid leaking from the pump behind the pulley and dripping off the hose. Somehow though I don't think it's related as the sound disappears in gear and doesn't change at all when turning the wheels. I cleaned the fluid off and drove around a bit and it doesn't seem to be leaking too badly and my reservoir is totally full.
The truck otherwise is driving as good as it always has and whatever this sound is doesn't seem to be having any effect on performance (yet...) ...
Tiguan :: Turbo System - Power / Boost Pulse When Under Moderate To Heavy Acceleration
I am experiencing a power/boost pulse when under moderate to heavy acceleration. I'm wondering if this is a sign of my diverter valve failing or another issue withing the turbo system.
I don't have a boost gauge and the main pulsing seems to be between 2800 and 5k in the rpm band.
Honda - Accord :: 2003 - High Pitched Whine When Accelerate Or Decelerate?
I just had my 2003 Honda Accord Ex in the shop. I was without my car for a week. I broke down on the highway and had to have it towed, not once but twice. I took it to a reputable Honda/Acura repair shop. It turns out the ECU was corroded and the A/C drain was plugged up. I was not aware of the design of the Honda in this area, however, with the A/C unit being above the ECU in makes it easy to destroy the ECU if there is any problem with the A/C. Seems to me that Honda might have wanted to recall this to put plastic between the 2 to prevent the corrosion of the ECU or something, however, no such luck. The mechanic pointed out that the carpet on the passenger side was damp and to check it. Who would a thunk?
I got the car back yesterday. After running the diagnostic equipment they had to replace the ECU and ignition responders, put plastic between it and the A/C unit, replace the spark plugs (apparently the wrong ones were installed), and #4 coil, have the keys reprogrammed, replace the A/C filter and clean the A/C drain. Now here is the rub..I got it back and drove down the block. There was a high pitched whine or whistle sound that occurred when I accelerated. And the same sound when I took my foot off the petal as it was slowing down.
I immediately drove back to the shop and the mechanic and I took a drive. He had heard it also before I got it back. He mentioned it might be the transmission and that if it needs replacing. The car has 170,000 miles on it and it the past 2 months I have had new tires. He suggested I drive it over the long weekend (Labor Day) then make an appt to bring it in next week to have the transmission checked. So here is my concern, if it is the transmission will I do more damage by driving it? Will it get worse quickly and break down thereby leaving me stranded again? What is the best thing to do?
Lexus LS 2007+ :: 2008 LS600hL - Power Steering High Pitched Whine?
I'm beginning to notice a high pitched whine when I first start up my 2008 LS600hL and turn the wheel slightly (like backing out of my garage). It almost sounds like the beginning of a power steering pump problem, but I think our power steering systems on the LS are electric.
Experiencing a slight whine/growling sound when the car is still cold and the wheel is turned? Maybe the sound has been there all along and I'm just now noticing it.
I did a search on this topic and came up empty. My car is still covered under a CPO warranty, so I'm not too concerned, but was wanting to get opinions from the forum on possible causes (or if this sound is a normal part of the electric power steering we have).
Ford 6.0L Power Stroke Diesel :: 2003 - Turbo Whistling Very Loud At Idle / High RPMs?
So I just purchased my first diesel a couple weeks ago (2003 f250 Lariat). I love it! However, I'm having concerns about my turbo whistle on it. At idle and while in higher RPMs is sounds ridiculously loud (even at 0 PSI in the boost). I've been doing my research on it and I know the 03's have the loudest sounding turbos because they have less vanes than the later models. I know without a video it's going to be hard to diagnose, but I am wondering if a loose boot would cause a turbo whining sound through the exhaust? I have yet to hear ANY other diesel in person that has a turbo whine as loud as mine.
View 14 RepliesFord Super Duty (1999-2016) :: 2003 F350 - Low Power / Screech From Turbo On Acceleration And Declaration
2003 6.0 F350... Under full throttle from take off goes about 20 mph just revs at 2500 let off the throttle in feather it shifts and acts like it wants to go just not allot of power sometimes. In neutral won't rev past 2700 rpms I do hear a screech from the turbo on acceleration and declaration. Also if in tow haul the truck won't shift at all. I can get it up to speed but even the smallest incline drops to 50 mph then takes bout 2 miles to get it back up to 65 mph or if I go downhill.... turbo makes the noise the whole time sometimes goes into passing gear in have to let off in it kinda my the truck hop in this is at 60 +mph. Only thing I have really tired was fuel filters and checked at plugs and boots.
View 1 RepliesFord 6.0L Power Stroke Diesel :: 2007 F350 - Turbo Whine And Out Of Empty Exhaust
I have 07 F350 6.0 never heard this out of any of my 6.0s. it's almost a whine but can hear it w turbo and out of empty exhaust. Almost like a supercharger noise stumped almost leaning towards actuator for turbo? Noise got real loud swapped turbos used same actuator noise is there but much quieter.
View 1 RepliesFord 7.3L Power Stroke (1999-2003) :: Noticeable Vibration Between 20 And 25 Mph Under Heavy Pulling
I've got a 2002 F350 DRW 7.3 truck I'm having a little concern over. It started this summer, when under very heavy pulling I was getting a very noticeable vibration between 20 and 25 mph. I did not think much of it, as it only happened under extreme conditions.
Now I'm getting the vibration all the time, and it's started another band which is 40 to 45 mph. It's much worse if you are very light on the throttle, if you're full throttle it's much harder to notice.
Truck has 154,000 miles.
Ford 7.3L Power Stroke (1999-2003) :: Rebuilt Turbo Still No Power And No Boost?
Well I am at a loss now. Rebuilt the turbo with a new wheel and kit from Riffraff. I still have no power, no boost and no codes. The new wheel whistles. I can hear it. It sounds way better than the old one. But still no power. I really don't know what to do now.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Higher Pitched Scraping While Driving?
I've got this loud higher pitched scraping/rattling/clanking noise while moving. Neutral or drive makes no difference. I have a problem with my coast clutch not working and will be having the tranny shop (warranty) take a look at what's going on. Could this sound be from that? I hope it's noticeable on the video. I need to do my swaybar link bushings, but it's not a suspension clunk it's definitely a rotating noise.
View 9 RepliesFord 7.3L Power Stroke (1999-2003) :: Intermittent Idle Knock Heavy Use Dependent
My late 99 has 161K, I am the 2nd owner and bought from the Original owner. It is stock with no tunes. Auto/4wd.
It has had an intermittent idle knock and recently has gotten much louder recently when used heavily with towing for summer camping in the 7K range up steep hills. The knocking goes away above 12-1500 rpm. There is no noise when the engine is cold. It seems heavily temp/load/heavy use dependent. If driven lightly, the knock is quieter but still present. The trans was recently rebuilt and new billet converter installed, made no difference so it's not that it would appear.
I rec'd blackstone last week and the results are excellent. Running the cyl contribution test while hot in drive at idle reveals cyl 8 is running 4.9 to 5.4 Perdels. #3 is 2.2 to 2.8. 1,6,7 are 0. 2 is .6 and 5 is .4.... I haven't checked bolt torque yet. My question: Is #8 "fixable" potentially with bolt torque? Is it considered too far gone and should just be replaced?
Ford 7.3L Power Stroke (1999-2003) :: Buzzing Sound Under The Dash After Heavy Rain
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?