Ford Excursion :: Vibration Only When Truck Is Under Power At About 65 Plus MPH
Jan 21, 2015
So I started to notice a vibration only when the truck is under power at about 65 plus MPH...
Now I already know I have a driver's side front wheel hub that needs replaced and the springs are typical Excursion springs (they all 4 need replaced), but this is the first time I have experienced the vibration.
Before you ask...the steering wheel does not vibrate. The vibrations can be felt at my feet and they create a low toned droning vibration that starts at about 65 mph.
When I'm cruising down the highway at 75 mph and take my foot of the accelerator, the noise and vibration basically goes away.
My diagnosis (and a few probably "stupid" questions): u-joints are going bad...
Could it possible be something else? How long they may last before I "have" to change them? What is the worst thing that could happen if they completely fail?
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My 2002 excursion 7.3 is acting weird when in drive. I have to get to around 2k rpm to get moving and hard shifts. But if I put it in 1st it has no problem but in 2nd i have hard vibration that shakes whole truck.
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I replaced the all 6 tires and all 3 rear u joints on my 03 dually and steering all feels tight but I still get a vibration above 60.
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the wifey went out to the Ex this morning to make a coffee run and came right back in. "truck won't start" hands me the keys. So I go out there and turn key, ALL lights and power comes on but when you try and crank it there's a tiny 'click' and then NOTHING AT ALL. Alternator's brand new and so is the battery (less than 2 months old).
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2003 with 2005 motor, auto trans. After truck is warmed up and been driven a while I get a vibration/nice when stopped. Sometimes the Vibration changes with the brake peddle application. Is there a ps hose that can go bad internally on these? Anything else to look for. It's easy to hear/feel in the cab but can't hear it under the hood. Changed the ps fluid with no change.
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I'm looking at a 2001 Excursion with 242k miles. Truck is all stock, and everything checks out well. The only thing is there is a slight vibration at idle, that increases quite a bit when the engine is revved to about 12-1500rpm. Ran a CCT, and #8 was flagged. I know that can be somewhat normal depending on the CPS, right? Otherwise the truck is smooth, and in great shape. Should I be concerned about what feels like a slight miss on #8?
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EGR marbles -- the chunks of carbon that come loose from the EGR cooler / intake manifold and stick the EGR valve open?
I've been getting these on 3 recent occasions, maybe 100 miles or so apart. The truck loses pretty much all power below 2000 rpm, smokes and stinks bad until I pull the EGR valve and dump these out. I'm trying to decide if I need to dig in and do a new EGR cooler and oil cooler. I've read the FordDoctorsDTS article suggesting these are caused by and coming from a leaking EGR cooler (possibly only when very hot) over time.
I'm not currently losing any coolant that I can tell, but was losing some a few months ago (during warmer weather), but also had a leaky heater valve that I replaced at the time. Not sure if the leaky valve would account for the total coolant loss (I lost over a gallon in a few weeks).
Here's the additional details:
- 2004 Excursion with just over 109K miles
- Replaced faulty EGR valve (was sticking open) about 300 miles ago
- Replaced stock turbo with new powermax turbo 300 miles ago. Old was rusty and pitted with sticking unison ring.
- I just did a total coolant flush, oil cooler back-flush, Restore and Restore+ and added new coolant filter
- Replaced thermostat during coolant flush. ECT stays pretty close to 190 degress when warmed up.
- ECT/EOT delta is mostly between 15 to 18 degrees, sometimes slightly lower or higher. Not much change after the coolant flush, but may be slightly improved.
- I've been doing pretty regular wide open throttle tests during recent test drives with the new parts above (I'm thinking this may have broken some of this stuff loose).
Here's today's marbles. They're all dry and will crumble if crushed. They are dull gray on the inside - not metallic as they kind of look here............
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I have a little problem with my 1999 f250 7.3 power stroke diesel. Every once in awhile, while driving the truck would die completely but i switch it into neutral and started right up. What could be the problem?
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I'm having an issue with my 2005 f150 xlt. Its been happening for almost near a month and still cant locate the issue .
It has a vibration at 75km throughout the whole truck. Ive tried multiple things done to it by a mechanic, such as having the tires balanced and the ujoints replaced. The problem still persisted and after attempting to test out to see if press/releasing the parking break (my mechani suggested trying that out), my driveshaft fell off.
Apparently the center bearing snapped and cant simply be replaced on the 05's. So i had to get a new driveshaft installed (used, both the 3 mechanics I've gone to say its in good condition).
Even after replacing the driveshaft the issue persists - however it seems a bit softer than it was (I am guessing the old driveshaft was worn from the vibration causing it to be worse). After that I took it to another shop to see if they could locate the issue. They did a driveline inspection and engine inspection too see if a misfire could be the cause.
Again, nothing was found. The only thing they were able to find was that the issue only happens under load and slightly occurs at 40 and 100km as well (although alot softer then the one at 75) and they say they cant find anything physically and it was a mystery to them.
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2000 V10 X vibrates from 40-55MPH when OD is on. When OD is off, significantly less vibration - very minor between 40-50MPH. Bad OSS?
I had codes for misfires on #4 and #8. I replace the spark plugs and coil packs on all 10 cylinders and codes changed to P0354/P0358 - primary/secondary circuit. Wondering if that is contributing to it.
I did the full reset process on the PCM. Codes cleared throughout the entire process. But once I stopped and restarted truck, codes came back.
My thinking is to get a replacement PCM first. I haven't done a lot looking over the wires to #4,8 coil packs. cursory look they seem to be fine.
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Bought a brand new f150 45 days ago.The truck shakes at 5mph and at 40/50 mph. Have had it to the dealer 4 times. Twice they changed a tire and balanced the rest. The truck also doesn't shift properly which they say is normal. It is a supercab with an 8 ft bed,told it is characteristic of this vehicle and they refuse to do anything further to it.
Filed a complaint with Ford Motor and he contacted the dealership,the service manager told them that it does shake and that it runs better than some and not as good as others. REALLY!!! So the resolution is that they gave us a premium extended warranty,with no fix. The problems are classic drivetrain problems and they won't even look at it. I don't know what to do next. I can't even trade it in without taking an 8000.00 hit.
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I have a 4.6 01 F150 with 3.08 rear end I got back in Sept. In Nov. I replaced the timing chain/guides and brakes/rotors all the way around. I have also flushed the cooling sys. and replaced all the coil packs/plugs in Nov. About 2 months ago I started feeling a vibration(feels like the truck is bouncing most of the time not bad but I know something isnt right) at ~37MPH. Not always bad but 98% of the time you can feel it.
I feel it at other speeds sometimes also. 2% of the time I dont feel anything. It had older tires and I got a new set ~ 3 weeks ago and its the same. A couple days ago I put a GoPro under it and filmed the driveshaft and it does seem to be bent some. What might be my issue or things I can check myself? One other note is the previous owner did use the truck to haul a horse trailer some and I know now that rear end was not the best for that! Truck has 210K on it and engine was replaced at ~ 150K
2001 F150 Driveshaft wobble - YouTube
I went down the street and back and only got up to ~35MPH
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I have a 2012 super crew ecoboost and about 50 mph and up on the highway i can hear and feel a vibration in the column. i have over sized tires but these came off my 11 f150 and it never had this issue with them. they are 33's on 18" wheels no that that large.
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My new to me 04 X has a fairly bad vibration that starts around 55 mph. At about 60-65 it sort of goes away, but not completely. The wheels are 20" F-250 wheels ( 2006 ) with spacers/adapters. These were on it when I bought it. I had the wheels re-balanced and checked the ball joints. This made no difference.
This is not what I would call the death wobble, just a bad vibration in the front end. The steering wheel does shake/vibrate a little, but so does most of the truck while it is doing it.
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At about 60mph I start to get a vibration through the vehicle. Its not in the steering wheel but the seats have a little vibration and you can see the child seats start to shake some. Stops above 80 and doesn't get real bad, just a little shimmy.
I rotated and balanced the tires with only 6k on them and its no luck. Where to start looking next: driveshafts, u joints, sway bar, etc.
2003 6.0 4wd....
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On our trip to Daytona this weekend I noticed a vibration/shudder between 45-55mph. Above and below that range it doesn't happen. Dont feel it in steering wheel or pedal. Does it in both 3rd and OD. Got under truck and driveshaft doesn't move at all. Just got those new tires put on a couple weeks ago. Don't remember this vibration before that.
Just checked tire pressure - front right 48 psi. All the rest have about 45 psi, would that do it? I have a shudder in brakes from stops above 45 mph I'm assuming warped rotors, could that do it?
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I have a newish to me 02 ex with 7.3 psd. It had a gradual vibe at 70-75 mph that i brushed off when i test drove it. I figured it was tires, old vehicle, etc. Fast forward to a couple months later, it still happens in the same range of speed but now is bad enough to shake your coffee in the cup holder. Vibes happen regardless of throttle position, OD on or OD off, etc etc. It is entirely speed dependent, occurs on 2 lane roads when I go that fast, or on the interstate. Ive even kicked it into neutral on the interstate and the vibe is till there until it gets to 69, then it goes away.
I feel the vibe in the seat of my pants, barely in the steering wheel (I feel like what little is in the steering wheel is transmitted thru the frame, etc.) So here's what Ive had done thus far, and the vibe is still there, unchanged:
1. had wheels and tires balanced and rotated
2. had driveshaft balanced
3. had rear driveshaft u joints replaced
4. took rear driveshaft out and ran it up to 70mph on jack stands (no vibe)
5. pulled both rear axles one at a time to see if wheel bearings were OK and if vibe was there with axles out, and vibe was still there.
so i finally took it to a driveline shop and had them go through the rear end, thinking it had to be something there. They called me and said your carrier bearings are toast, so I said go ahead and rebuild the rear end with new timken bearings and new gears, etc. So they do that and I still have the same vibe at 70-75 mph. I'm at my wits end here, the shop totally expected the rear end rebuild to cure it.
The only thing I haven't done is remove the rear driveshaft and drive it in 4h to see if i can replicate the vibe there. I hate to spend anymore money on this just trial and errorring everything. That leaves the transfer case and transmission to be the only things causing the vibe as far as I know.
Also, the vibe occurs around 2k rpm, but only when at that speed. In lower speeds, at 2k rpm it is smooth as silk.
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I have been chasing a vibration that occurs around 60-70 MPH. Had all the tires re-balanced and checked the rest of the suspension and narrowed it down to the rear driveshaft.
Took the X to the driveshaft shop and he checked all the joints and suggested that I grease the slip joint as it still was original as delivered. Here's what I did.
Removed the rear bolts and dropped the rear of the shaft. Cut off the factory boot clamps. Marked the shaft so it could go back in the EXACT way it came out and removed the rear of the shaft with the boot intact. While the rear of the shaft was out I checked the joints and found them to be perfect.
There was no real grease to speak of left, just the factory ford blue. Filled it and the splines with moly grease and re-installed the shaft and boot. Clamped the boot with nylon ties (per his suggestion). No vibration any longer. Thought I would post this up as a quick tip.
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So I'm used to the vibration coasting down from 110-115mph or so, I would mitigate it by applying light throttle. Recently it started coasting in the 75-80 range, then 70-80, and now it does it just plain cruising in that range as well. Nothing below 65, and nothing above 80 (coasting, cruising, or under load).
It's definitely a mechanical vibration, tires are fine, wheels are fine, wheel bearings are new... Thinking driveline u-joints? Don't have the money to throw parts at it unless they're the fix. I've consulted Christina's analysis chart and this is the only thing that makes sense so far.
No other symptoms anywhere else except those ranges. U-joints are, as far as I know, OEM originals. 276k miles seems like a hell of a life for them, especially with the abuse they've seen in the past 75,000.
I need to crawl under and give things a shake and wiggle, current condition is unknown. Left for a road trip to meet the wife's ex so he can have his time with his son, and the X was so bad at the aforementioned speeds that we turned around and swapped vehicles. It was worse this morning than it's ever been and I wasn't risking catastrophic failure with a zero emergency fund.
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I have had a minor vibration above 50 or so mph(by speedometer). Installed a new driveshaft and corrected the pinion angle to near perfect. I have OEM 4.30 gears and 33.4" tall tires. I had to retune motor/PCM and one of the options while installing the new tune was tire revs per mile.
I input 620 and pressed on. Now my slight vibration is gone. Even at a corrected 70 mph it's smooth. I'm a little baffled, as I do not understand how a tire diameter correction in the PCM could affect the drivetrain?
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Took the family up into Michigan this weekend to go play out on Silver Lake sand dunes and do some camping up there. We towed our 27ft travel trailer which weighs about 6500-7000lbs so its not to terribly heavy. Well on the way up we were hitting some hills and with the heavy traffic the truck was kicking in and out of OD so i shut it off. Was doing good with everything until we came up to a stop light and there was a big puff of smoke that came out from under the truck.
We pulled over into a gas station and looked at. It looked like trans fluid was coming from the front of the bell housing or the little plug at the bottom of the trans towards the front. Couldn't really tell where it was coming from. We let it cool down for about an hour and added a a little fluid to it kept on driving. After that we had no problems with it for the rest of the weekend and that even included the 200 mile trip back home. I left the OD on for the trip back home.
Do you all think the trans is ok and could probably just use a good flush and new coolant or should i take it in somewhere to look at maybe getting it rebuilt? Im gonna add a good trans cooler and gauge to it so i can monitor it a little better. This is all on a 2000 EX v10.
Also, since I have 3.73 gears in this truck and its our dedicated tow rig, would it be wise to swap in some 4.10 or 4.30 gears to support it out a little bit? I know the v10 likes to rev going down the road but want the rest of the truck to last as well. We are looking at getting a bigger camper down the road and want the truck to be able to handle it safely and tow it without struggling as much.
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