Ford F-Series Rough Idle/Vibration Problems

136 messages, Last post on Nov 06, 2009 at 7:23 AM

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

#134 of 136 Engine backfiring/rough idle/vibrating by rgriego Sep 18, 2009 (6:15 pm)
Hi, is there anyone out there who can direct me to a good web site that can help me figure out why my 1978 f-150 400 4wd vibrates, backfires and holdsback. Just put new plugs, wires, distributor shaft, cap and rotor, and carb. Any suggestions. Has fairly new motor, with only 30,000 miles. When I reach about 30 miles an hour it begins to backfire, vibrate and hold back. Could it be timing is bad though it was just set about a year ago. Vaccum, carb? HELP!
#135 of 136 Re: 2006 F-150 Vibration worse when towing [tdmadmac] by sammor Oct 03, 2009 (5:03 am)
Replying to: tdmadmac (Aug 06, 2008 9:04 pm) do you have any more info on what is causing the vibration, I have a 2007 E150 in my shop with the same problem, vibration at 1800 rpm, I removed the torque converter and reinstalled the transmission and started the engine, vibration still there so it's definitely engine related. I replaced the harmonic balancer, no change. Any info would be appreciated, I think it's internal. Replies to this message: vertman (Nov 06, 2009 7:23 am)
#136 of 136 Re: 2006 F-150 Vibration worse when towing [sammor] by vertman Nov 06, 2009 (7:23 am)
Replying to: sammor (Oct 03, 2009 5:03 am) I have the exact same vibration in my 03 navigator. Anybody solved this issue yet?