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Ford F-Series Rough Idle/Vibration Issues

106 messages,  Last post on Sep 14, 2008 at 12:45 PM

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What is this discussion about? Ford F-150, Engine, Truck

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#86 of 106 Re: 2005 Ford F150 Lariet 4x4 [giturdone1] by rrover Sep 21, 2007 (7:07 pm)
Replying to: giturdone1 (Sep 21, 2007 2:28 pm) Thanks man I will tell my dealer your fix for sure. I rarely use my emergeny brake though. I have been thinking about it and there is one place on the interstate that if I hit over certain speed it does it every time good thing is its a straigt strech and seems to be just a second or two and stops. Today was around a long curve and it didnt stop till I slowed down it was like going over speed bumps every 2 feet at 75 and trying to hold the turn. Ive had ford trucks for many years and stood by them my buddys have gone to chevy and even toyota. I love the truck but its making me think. Thanks again. Replies to this message: giturdone1 (Sep 21, 2007 9:27 pm)
#87 of 106 Re: 2005 Ford F150 Lariet 4x4 [rrover] by giturdone1 Sep 21, 2007 (9:27 pm)
Replying to: rrover (Sep 21, 2007 7:07 pm) hey no problem let me know im curious. i know when i would have the problem, felt like a blown tire, drive shaft or something of that nature. it was so bad the windshield wipers were bouncing pretty hard against the windsheild. im just glad i was still under warranty. good luck   martin
#88 of 106 Re: ford f350 violent shaking [j2go] by giturdone1 Sep 21, 2007 (9:32 pm)
Replying to: j2go (Mar 05, 2007 9:26 pm) i have a 05 fx4 same problem after several visits to a dealer with no luck . took it to another dealer. they found my emergency brake was self engaging. they replaced everything on the rear brake system. felt like a blown tire or driveshaft. radical good luck
#89 of 106 violent shaking on 05 fx4 by giturdone1 Sep 21, 2007 (9:34 pm)
have your dealer look at the emergency brake system. mine was self engaging at speeds of 45-50 mph. so far so good,
#90 of 106 non-continuous vibration in Ford F250 by jrj2 Nov 26, 2007 (3:57 pm)
I've been reading through the discussions on vibration because my Ford F250 has a similar problem. I think it may be different than those discussed because this vibration is not continuous and it is not a violent vibration. It comes and goes at random times, usually starting or stopping after I hit a bump in the road. I've taken the truck to a Ford dealership for a diagnostic, but they said everything was normal (since that diagnostic, the seals had to be replaced because they were leaking and the alternator went out). I also took it to a Firestone center and they also said that everything was normal. The vibration is increasing, but it is still not continuous. Does anyone know what this could be??? I think we would do better to just drive this truck off a cliff after all that has been replaced since it was purchased, but since I'm an optomist, I guess I'll try to fix one last thing! Oh, the truck has around 125,000 miles if that helps. Replies to this message: chip5150 (Nov 28, 2007 1:24 pm)
#91 of 106 Vibration at idle and driving by chip5150 Nov 27, 2007 (3:16 pm)
2000 F-150 4.6 V-8 120,000 miles. New brakes/rotors,ball joints,tires,u-joints,shocks,IAC valve,o2 sensors, spark plugs, all filters,rear seals, serpentine belt,fluids great,motor mounts good and tight, fuel system cleaned professionally, NO trouble codes on my scanner,runs great EXCEPT for the vibration at idle and driving. My side mirrors shake noticeably because of it. Took it back to Belle Tire to check balance and they SAID they were fine. Could it be the timing is off ? I did a vaccum check and it was GREAT. I take care of my truck and am used to being able to figure things out. I'm stuck on this one. Any ideas before I buy a timing light ? Thanks. Replies to this message: mickeymouse2 (Feb 03, 2008 11:02 am) 56prostreet (Feb 24, 2008 5:17 pm)
#92 of 106 Re: non-continuous vibration in Ford F250 [jrj2] by chip5150 Nov 28, 2007 (1:24 pm)
Replying to: jrj2 (Nov 26, 2007 3:57 pm) I am having a vibration issue also. ( see post # 91 ) I THINK my motor mounts are tight, but I could only reach 2 of the bolts. Maybe the rubber is cracked. It happens. Anyway, it may be your motor mounts causing the vibration, but how do you test those things to know for sure ? Good luck and let me (us) know if you find the cause.
#93 of 106 5.4 wont idle by heebie Dec 16, 2007 (9:41 am)
my 1999 with a 5.4 runs good but will not idle, everything is factory on this truck and problem just started.please help,thanks
#95 of 106 Re: increased noise and vibrations [ktownfootball6] by dgrasser Feb 03, 2008 (7:33 am)
Replying to: ktownfootball6 (Jul 16, 2007 10:42 am) The main exhaust pipe (there are two) probably pulled away from the exhaust manifold pipe. There are typically two bolts holding them together and they rust over time. I pulled mine back together once as it was really loud. Everything was so rusted that instead of redoing the bolts, I used a clamp to tighten it up.   W.r.t. the vibration, once the exhaust manifold separates, the O2 sensor will read high O2 in the exhaust stream (is the check engine light on) and the computer will adjust your truck to run richer. This will affect the way your truck runs.   I have been having problems with misfiring on my 1997 F150 and I believe that because of what I described above, the richer fuel mixer causes the engine to run hotter leading to other problems with plugs, spark plug wires, and/or coils (the coil over plugs have a wire inside the boot, that is the spark plug wire).   Take it to Auto Zone and they will diagnose with their reader for free.

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