Shutter when accelerating
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Junior User
Joined: Jan 2009
Posts: 88
Likes: 0
From: Phoenix Arizona
Shutter when accelerating
I have a 2008 super crew 4x4 5.4L, 95,000miles
when I accelerate from a stop occasionally the truck shutters. It first happened while I was pulling a trailer and I thought it was a sticking brake on the trailer but it does it without also. There is no check engine light on. I can't figure out how to make it happen when I want so if I take it to the shop it probably won't happen while it's there. It happens 2 to 3 starts in a row then it can go away for 20 starts nothing consistent. Any ideas what to look for? TIA
when I accelerate from a stop occasionally the truck shutters. It first happened while I was pulling a trailer and I thought it was a sticking brake on the trailer but it does it without also. There is no check engine light on. I can't figure out how to make it happen when I want so if I take it to the shop it probably won't happen while it's there. It happens 2 to 3 starts in a row then it can go away for 20 starts nothing consistent. Any ideas what to look for? TIA
Fleet Mechanic
Joined: Jul 2010
Posts: 1,354
Likes: 31
From: Winnipeg
Some suggestions; check your transmission mount and engine mounts as well. check for missing leaf spring nylon spacers. Engine misfires {sparkplug age}. PTFE lube the driveshaft to transfer case slip yoke.
Fleet Mechanic
Joined: Apr 2016
Posts: 1,653
Likes: 193
Typical misfire ,we see it all the time on here . Ford has the count set high to avoid setting a code .happens over 45-55 when trans has shifted to high gear and its lugging . Or climb a hill usually in high gear . You can see the raw computer counts on mode six per cly .
Indicates you need new plugs ,new boots and spring and clean cop contacts good .
Guys have even changed transmissions for this problem . It usually is described as a shudder but if you want it to shutter like a camera lens thats ok too . Ha !
.Don't let it keep doing it or try to make it set a code that's real hard on cats Don't fail to put new boots on ,clean scape high volts tab on cop then use contact cleaner . clean those wells out and do a hospital clean job . Oil, antifreeze ,heat ,gas all damage boots . Use some carb cleaner to clean out snout area of plug in cylinder it will dissolve that carbon that breaks plugs . If oil or something leaking into wells you are going to have trouble.
Ford now wants plugs changed before 60k .If this is first time for plug change get a lisle plug extractor on hand first .
Indicates you need new plugs ,new boots and spring and clean cop contacts good .
Guys have even changed transmissions for this problem . It usually is described as a shudder but if you want it to shutter like a camera lens thats ok too . Ha !
.Don't let it keep doing it or try to make it set a code that's real hard on cats Don't fail to put new boots on ,clean scape high volts tab on cop then use contact cleaner . clean those wells out and do a hospital clean job . Oil, antifreeze ,heat ,gas all damage boots . Use some carb cleaner to clean out snout area of plug in cylinder it will dissolve that carbon that breaks plugs . If oil or something leaking into wells you are going to have trouble.
Ford now wants plugs changed before 60k .If this is first time for plug change get a lisle plug extractor on hand first .
Thread Starter
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Junior User
Joined: Jan 2009
Posts: 88
Likes: 0
From: Phoenix Arizona
Thanks for the ideas
in the last 2 years I had the plugs and motor mounts done along with the exhaust manifoldsI'll check the transmission mounts it's just so sporadic and only from a stop
in the last 2 years I had the plugs and motor mounts done along with the exhaust manifoldsI'll check the transmission mounts it's just so sporadic and only from a stop
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