Ford 7.3L Power Stroke (1999-2003) :: Clunking Noise After Speed Dropped To 20 MPH
2001 ford excursion 7.3l diesel.
So I tried to go to work today but the truck said no. it started out fine then out of no where it felt as if someone slammed on the back brakes engine still revved up like normal just didn't want to go. speed dropped to 20mph then i heard a clunk. after that it was fine until it hit 20 mph again. it did the same thing again.
So I got mad at it thinking the trans went out gave it the beans and it shifts into all gears but did not feel like it had power. i did pull over and check the fluid looked a little orange. when got back in the truck i did notice the od off light blinking?? drove the truck home was shifting fine but hear this awesome sounded like a hand grenade rattling around underneath. when i got home notice fluid coming from the bell housing(out of the bottom).
Ford 7.3L Power Stroke (1999-2003) :: Bump / Thump Type Noise When Start From A Dead Stop
For probably years, I have had a bump, thump type noise when I start from a dead stop... say at a red light. I had it in my head, maybe there was that much slop in the drive train... as old truck is over 400,000 miles.
Yesterday, I rebuilt the driver's side axle, bearing,seals, new hub...the works.. I heard that noise again later... and my thoughts were, I did all that work and I'm going to find a lower/upper ball joint is bad, although I did look at them and thought they were fine during the rebuild.
Had my wife get in truck.... and swing wheel back & forth... so maybe I could see what was loose.. or making noise.
I was shocked... just something I never thought of looking at. The u-bolts holding the leaf springs were loose... the whole axle was shifting back and forth on the axle. I've never touched those bolts....
Ford 7.3L Power Stroke (1999-2003) :: Speedometer Stalling Then Moving / Stops At 38 MPH
My speedometer was intermittent for a while, stalling, then moving, but never above the actual speed. Now I turn it on, but as soon as I move, it travels up to 38mph then stays there until I turn off the engine, then it hangs for 4/5 seconds, then drops to zero.
I replaced the VSS in the rear diff, and the one on the tranny. I checked all fuses. There are no other dummy lights or indications. Bad ground? I'm hoping I don't need a new gauge cluster.
Ford 7.3L Power Stroke (1999-2003) :: Clunking At 35 MPH Or Up
I have something clunking in there (at 35 MPH on up) that's been driving me crazy for about 2 or 3 years. I may have finally caught a break by way of an intermittent symptom I didn't catch before. I just pulled into work and hung a hard right to do back-in parking. As I backed up slowly, I felt a clunk about every 6-12 inches of travel. I ran out of room before I could keep testing, so I pulled forward for another go at it. Symptom gone! I tried a few more times without getting a repeat, so I just parked after entertaining the masses with what they must have thought was a tough parking job for me.
OK... so 6-12" is nothing close to a wheel rotation, and I'm not inclined to thing it's a full driveline rotation in reverse... but I still can't rule out a funky U-joint. All U-joints were replaced about 3-4 years ago, and the driveline was completely rebuilt, straightened, and balanced. Rear end rebuilt two years ago. Front bearings replaced 2 years ago. Front hubs replaced about 18 months ago. Wheels and tires replaced last fall. Transmission replaced 5 years ago, flex plate replaced 2 years ago. The only spinning thing untouched is the transfer case - which is a chain and gear affair. I know from vast experience how stretched chain and grooved gears behave - but I don't know when that thing is spinning or not.
Could this be a tired transfer case getting grabby?
On the front bearings: I lost the vacuum seal on the front right last winter, and that hub gets warmer than the other side. I have planned to get that looked at (I have no time to jerk with it), but I wonder if I dropped a shiny Timken and that's what I feel in the wheel... and if that could be the clunk. I didn't feel the clunk in the wheel as I backed today, that one was more of a fore-aft clunk.
Ford 7.3L Power Stroke (1999-2003) :: 2000 - Knocking Noise - Cracked Piston / Rod Bearing?
Chasing this knock and I'm starting to get a little bit worried. So I'm looking for what I should do next.
Here is the truck info... 2000 F250 4x4 206k. . Swamps Diesel 200/30's. Terminator HPOP. GTP38R. EBPV delete pedestal. Banks wastegate. AFE stage 2 intake. RiffRaff FRX. 4" exhaust. Hydra chip. John Wood Auto. 6.0 Trans cooler.
I have a knock sound coming from the area of #8. It is noticeably louder in that area with a stethoscope. Its not any louder anywhere else (oil pan, block, otherside of engine, or front). Truck does not smoke and runs and idles great otherwise. Was thinking possibly the cackle/fuel knock issue these trucks have but with bigger injectors and the FRX could this even still be a possibility?! Anyways here is what I've done.
Checked fuel pressure and at idle it is 61/62 with any tune. At WOT on Econ tune it goes down to ~40ish psi. With the extreme tune WOT dived down to 28/29psi. So my thinking was maybe that injector got screwed up so...
Swapped #8 injector with #2 so the front injector with the back to see if either it had some bad o rings or isolate the injector as the problem if the noise moved cylinders with the injector. While I did this I put brand new O-Rings on those two injectors and popped them in. Got it fired up and the knock is still in #8.
Unplugging the injector with the engine running the noise seems to disappear. HOWEVER, when I use the stethoscope the knocking noise still sounds like it's there but very faint. Without the stethoscope I can't hear it. Also driving the truck down the freeway and letting it coast the noise goes away when the injectors get cut off.
Recently pulled off valve cover and checked the pushrods and rockers on #8 and all looked fine. At this point I'm thinking wrist pin, rod bearing or cracked piston??? Could it somehow still be a fuel knock?
Ford 7.3L Power Stroke (1999-2003) :: Truck Takes 30 Seconds Or So To Start Moving Especially In Reverse When Started
When I start my truck it takes 30 seconds or so for the truck to start moving... especially when in reverse. If I give it some gas it doesn't take quite as long. I am not a transmission guy. I assume it has something to do with building pressure but I don't know what would be the cause. The fluid is full and looks good.
View 8 RepliesFord 7.3L Power Stroke (1999-2003) :: 2000 F350 - Noise Like Exhaust Rattle Or Vibration At Idle
I have a 2000 Ford F350 7.3 with the auto and 262,000 miles on it. As far as I know everything is stock on this truck. It has been a great truck but lately its been making a strange noise. It almost sounds like an exhaust rattle or vibration but it is intermittent. Its not really loud it can be heard best in the cab at idle. I've looked all over on the truck and haven't found anything. I can't pinpoint where it is coming from. I tried starting the truck with the serpentine belt off no change.
I took the inspection plate off the bell housing and couldn't see any cracks the torque converter bolts appear tight, and the starter is not engaged while running. I've read a few forums on the torque converter going bad. It looks to me like its more the 99 trucks that had trouble with that. Did the torque converter issue carry over to the 2000's? Would a torque converter/transmission problem be intermittent?
Ford 7.3L Power Stroke (1999-2003) :: 2000 F250 - Banging Noise From The Motor / Frequency Increases With RPM
00 F250 338k auto
No error codes or warning lights (Forscan verified)
No smoke out of the exhaust
No oil or coolant leaks
Have banging noise from the motor. When cold truck sounds normal, quiet. When it warms up, the banging becomes audible. You can hear it at idle. You can hear it under acceleration. Frequency increases with RPM
When at speed, and letting off the throttle, noise goes away.....comes back when back on the throttle. Any time during driving when I let off, engine quiets down to normal. To me it sounds like exhaust leak, bur not sure how to check for those?
Ford 7.3L Power Stroke (1999-2003) :: Rattling / Clunking Sound From Front Left Wheel
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)?
View 10 RepliesFord 7.3L Power Stroke (1999-2003) :: Front End Clunking Sound Going Over Parking Lot Speed Bumps
I went to check out a '03 7.3 SD the other day. It didn't seem to have a lot of surge when I accelerated to freeway speeds. Kind of lazy feeling. Didn't smoke out the back though. It did have a front end clunking sound going over the parking lot speed bumps. I opened the oil fill cap while it was idling and it blew a plume of vapor/oil about 9' high like a steam engine puffing. Held my hand over it and got a oil wet palm after just a few seconds. I'm hesitant to drop any $$ on it.
View 6 RepliesFord 7.3L Power Stroke (1999-2003) :: 2000 F250 - Codes P1247 And P1248 / Noise Sounding Like It Lost Air Compression For A Few Minutes
My pickup has 316,000 miles on it. It's a 2000 ford f250 7.3 powerstroke. I have always bragged how my truck can pull anything because it has alot of power. Yesterday when pulling a 28' travel trailer up an incline I noticed I didn't have much power and it steadily got worse. Now I'm at a crawl when I hear a noise sounding like it lost air compression for a few minutes then the noise stopped. I stopped and looked to make sure everything under the hood was still attached and everything seemed fine.
I got back in and continued very slowly a few more miles home. Gauge were all good, never got hot. I put a scanner on it and it threw two codes. P1247 and P1248. I haven't noticed any unusual smoke. This is my second ford I've owned and know that when weather gets cold you may have to plug it in. But this truck it doesn't matter if it's 100 outside it will not start without plugging in for at least 1 hour. I've replaced all glow plugs hasn't worked. So I am assuming this break down now has something to do with it. I really am starting to not like fords!
Ford 7.3L Power Stroke (1999-2003) :: Fairly Loud Clicking / Clunking Sound Coming From Front Under The Hood
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.
View 5 RepliesFord 7.3L Power Stroke (1999-2003) :: No Power When Come To A Stop And Accelerate
Cruising down the street in my 7.3, i come to a stop, and I go to accelerate, and there's no power. It says "service engine soon" so if I try to turn it over again it'll just crank. But if I turn the key off and back on, it'll start right up. It's done this 3 times.
View 5 RepliesFord 7.3L Power Stroke (1999-2003) :: Power Breaking And Rough Idle When Stop At A Light
We have a 2002 7.3 f350 2wd this darn thing is now tripping me out. At first when ou start the truck its all good but when it warms up the idle is funky when you go to stop at a lite its like im power breaking and rough idle once stopped the idle is about between 800 and 900rpms at a stop really high idle but plenty of power on take off...
View 2 RepliesFord 7.3L Power Stroke (1999-2003) :: Won't Stop Running?
No start. Changed starter solenoid. Changed starter. Now it runs although when I turn the key to the off position and remove it the engine continues. The only way to get it to shut down is remove the small wire from the positive on the battery and then turning the key to the off position or vise versa. The machine seems to be pulling power even when completely shut down. The batteries drain power with "nothing on" i d m shot? Someone stop me before I go to the dealer.
View 5 RepliesFord 7.3L Power Stroke (1999-2003) :: Truck Dies When It Comes To Stop
I know there are a few threads floating around regarding truck dieing, but mine is slightly different than the others, maybe its the same culprit, maybe not, but i thought i would start a new thread just in case.
First, I commute about 50 miles to work everyday, truck gets plenty of interstate highway run time, smooth as silk. About a month and half ago when i almost got to work I slowed to stop at a red light. As I came to a stop the truck "stumbled". Acted like it wanted to die but caught itself and kept going. I said whooaaaa girl, what this? Ive had this truck for almost 10 yrs now and never anything like this. About a week or so later, same commute, same red light, cept this time it dies. Starts right back up no problem. Just acted like someone turned the key off.
Then a week or so after that, while driving home this time, as I pulled up at the house to check the mail at the mailbox, when i came to a stop it died. Cranked right back up. Before I could put in drive, it died again. Cranked right back up and i drove on into the driveway. Then a few days later, while checking the mail again, it died again. Cranked up immediately and parked.
Today, while driving home, after i had gotten back to town, but before i got home i made a stop at bank drive thru, when i came to a stop, it died. While cranking it wanted to start and kind of stumbled on itself and died. Then it cranked right up and i came on home no problem.
So far it only occurs after approx 45min to 1 hr of operating time so the engine and everything else are at temp and far from cold. After reading thru some of the other threads of similar but different conditions (cold start dieing, dieing while under power, etc) Im getting flooded with ideas of what could cause it, but not settled on any.
1.Could be failing ICP? (original, has never been changed, 317k+).
2.Could be plugged fuel filters? (been a while since changing, approx 30k+)
3.Could related to one of my own earlier threads regarding possible failing alternator (when rpms drop can volts drop enough to kill engine?)
4.Could be loose ignition switch? (about 2 yrs ago i had to swap the blinker switch, to get to it had to remove the ignition. Upon re-installation the switch never did get tight as before and was loose. Been loose ever since. To the point that with key out of ignition and door ajar i will get the door chime as if the key was in ignition. I can bump the ignition, and chime goes away. Been this way for two years and no apparent problems. Until now maybe?)
I was thinking ICP after a few of the other threads, but after tonight Im leaning towards the ignition switch. I guess i can try to wiggle the switch after cranking tomorrow and see what that does for a trouble shooting effort. Is there a way to trouble shoot the ICP to see if its failing or not? Isn't that a fairly costly sensor? Would hate to buy one and not be the cause, but after 317k i may need to buy before too long anyway.
Ford 7.3L Power Stroke (1999-2003) :: Stalled When Takeoff While At A Stop Sign
The other day while at a stop sign in my e99 F450, I went to take off and stalled. I am not sure if the stall was my fault or not; however, it would not start. I turned the key on and the wait to start light did not come on.
The first thing I checked was the mini 30 amp fuse under the dash that controls the GRP and the fuel bowl heater. The fuse was good, and my heater has been unplugged for a while anyway. Recently my SES light came on with codes that said the glow plugs had low voltage for both banks. I have cleaned the wires a couple times and the light goes out but then comes back on after a minute or so.
I figured that maybe if it was a bad wire it finally went bad so I got jumper cables and started to try and jump wires. I moved them around and found that when I hooked one side to the positive battery terminal and the other to the small key hot wire on the glow plug relay, the light would come on and it would start. I left the cables hooked up and drove the couple miles back home.
After messing with it I figured I could run a new wire. I got a fuse tap, and went from the 30 amp mini fuse that controls this system anyway, and ran it up to the post on the GPR for my new keyed hot wire. The WTS light would cycle and it would crank, but no start. After some more messing around I decided to put both the original wire back onto the post with the new wire that I had just put on; after doing this it started right up. I took it for a test drive and a couple times the engine would act like it stalled, only for a split second. When looking down at the dash immediately after the tach would be at normal RPM and the WTS light would be on, as if I shut the key off and tried to start it again.
I suspect it is the original key hot wire that goes to the GPR. It appears that this wire also has a purpose, other then serving as only a keyed hot wire for the GPR. It has about 6 inches off of the GPR, then it goes into the harness. Where that wire goes? I will just run a new wire instead of having to dig through that harness... that doesn't look like something I would wish upon my worst enemy.
Ford 7.3L Power Stroke (1999-2003) :: Hesitation When Accelerate Especially Starting From A Stop
I have hesitation as I accelerate especially starting from a stop. It will continue until cruising speed. Funny thing is when I put the cruse control on the hesitation stops and it runs fine. If I want to accelerate while on cruse the hesitation starts again until I let off the accelerator. Is it the TPS ? I changed it two months ago.
View 8 RepliesFord 7.3L Power Stroke (1999-2003) :: Hard To Get Clutch Into Gear At A Stop
Well, I think my clutch is falling apart. I am hearing an intermittent nasty noise coming from somewhere in the bell housing/oil pan area. It comes and goes, but seems to be more frequent lately. It sounds like a dryer that somebody threw a pair of sneakers and some rocks in; with a metallic clunking noise of something being "churned" around. As I said, sounds almost exactly like the dryer thing.
The clutch does not seem to be slipping, but I do occasionally have difficulty getting it into gear at a stop. I'm guessing that the clutch disc has thrown a hub spring, and its rattling around in the bell housing. Assuming I need a clutch; which I think I do, I need selecting one. I have no history on the clutch or flywheel, so I will assume that I need a new flywheel to match whatever clutch I get.
I can't get a stock replacement, due to the injectors/chip/etc.... I would estimate I am making about 350hp/700ft-lbs. I don't tow currently, but I may pull a car trailer in the future. I DO haul heavy loads in the bed (4,000lbs) on a regular basis. I also drive/shift aggressively, as well as shifting quickly. While I spend a decent amount of time on the highway, I also do a lot of stop and go stuck in traffic driving; so smooth engagement is important. So, no ceramic/ceramic in/out type clutches.
I do NOT want a South Bend. I don't want a super soft pedal. Also, the whole pedal-sticking-to-the-floor thing they mention is unacceptable. Personally, I think they should be ashamed of themselves for putting out a product with such an obvious unsafe design/engineering flaw, and then try to explain it away as "normal". Nope. They need to go back to the drawing board and fix that. As I said, it constitutes a serious safety hazard.