weird bucking issue? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 01-12-2014
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weird bucking issue?

Not sure what is causing this problem but as im driving down the road if im in one gear for any amount of time the truck makes a sudden buck, not a huge noise or anything you can just feel it in the gas pedal, Its a 5 speed tranny, i figured the clutch was gettting bad but the it seems to be fine, and no other problems, only has 123k on it. I noticed it before but didnt pay any attention to it but now it seems to be getting worse. Anybody else ever have this problem?
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Old 01-12-2014
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Does it seem like a misfire? Check engine light come on?
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Old 01-12-2014
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check engine light was already on due to sensor in air intake and something with emmisions, Ill plug it in again tomorrow and see if any new codes popped up, My instructor (im in school for auto survice tech) told me the codes that were up were absolutely nothing so I didnt worry about them.
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Old 01-14-2014
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Talked to my instructor, He said its definitely a misfire. Now just to plug it into the scan tool and find out where its coming from..
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Old 01-16-2014
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does it only happen when it snows? At least i think it snows in newfoundland....
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Old 01-19-2014
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Got it fixed, spark plug was cracked around the middle causing it to misfire, changed them all and didn't have a problem since! Minus the bandaids and foul language haha.
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Old 01-22-2014
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Weird, I changed the plugs, and it was fine. But it was also mild out after I changed them, starting to get some snow again now and I noticed that it misfired again. Only twice since I changed my plugs (4 days ago) not nearly as much as before though.
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Old 01-24-2014
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I had a similar issue with my 1999 Ranger, 3.0 automatic. My truck would "buck" when the engine was under load, especially pulling a grade. I changed the coil pack and plug wires and the problem was solved. It was obviously a misfire issue, and many things can cause a misfire, (fuel, spark, timing, head gasket, etc.) but mine was solved with the coil pack and wires. Hope this helps.
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Old 01-26-2014
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It seems to only happen when there is snow down, I'm missing a guard on my driver side so I'm guessing snow is getting in around the plugs
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Old 01-26-2014
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What plugs did you put in it? I put autolites in mine and they kept cracking. Switched them to motorcraft, and the problem went bye bye.
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Old 01-29-2014
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Ngk G power plugs, far from top of the line but not the worst either. Not a big selection around here. It seems like it's the snow, I'm going to make a new guard for my wheel well and see how it goes from there.
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Old 01-29-2014
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i had this same issue on my 04 edge 4x4 3.0. I would be driving on the freeway and it would buck. it came and went. Every once and a while it would. Never thought much of it. I had newer motocraft plugs in mine. It seemed like a skip or a jerk. Pretty wierd ****. but i assume it had something to do with a misfire sound like the best explanation.
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Old 02-02-2014
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Have had same misfire only when snow is flying in the air. Weird, never happens in a driving rainstorm. Bought new ignition wires,motor craft, and installed on drivers side. Surrendered on the pass side and decided that if prob remains I will have a mech deal with it and change plugs which also scares me, having bff's(big fat fingers).

231,000 miles with original plugs and wires. 2004 4x4 with 4.0 liter. Love this truck, hate ford for discontinuing. This is my third
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Old 02-03-2014
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Someone had an issue with snow which turned out to be an intake problem. I would check around the intake for open clamps or something or of the ordinary.
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