Transmission
#1
Transmission
Hello everyone, I was wondering if you could help me. When I'm driving and suddenly need to hit my brakes and then go to go again, there is a hard jerk. Keep in mind, when applying brakes I never fully stop. The hard jerking only happens when I go from a hard slowing motion to proceeding again. A friend says its a safety feature so the transmission isn't in a bind a breaks. If I allow the truck to roll for a second then it won't do it either. Anyone have any idea?
#2
TOTM November 2019
iTrader: (2)
You need a tune up of new plugs, either new COP's or rebuild the current ones with new boots and springs, fuel filter and clean your MAF and throttle body (remove throttle body for best results). My truck did the same exact thing. After a tune up, it all went away.
#3
Thanks but the jerk I get is one hard thud like its caught between neutral and gear. I had the issue you're talking about and did all those things and it cleared up but this is a transmission issue. Again, when I feel the thud or hard jerk it's almost as if it's caught between gears. Does not happen any other time
#4
Summers did you find it was easier to rebuild the coil packs or just replace them? They're like $70-$80 a piece arn't they? My friend just had his plugs replaced in his 2006 FX4 SCAB, but he's only replacing coil packs as he goes...it seems to be working for him replacing one at a time because of the cost, but I prefer to do things all in one shot...if I can afford it at the time
#5
Senior Member
I wouldn't say that replacing the boots and springs was "rebuilding" the COP. The "coil" part is not serviceable. However, replacing just boots/springs is an option, more times than not, I have found the coil itself to be the fault of a misfire.
Last edited by screamineagle; 02-20-2015 at 08:48 AM.
#6
So with 85,000 miles...do you think it would be better to find the source of the misfire instead of changing all the plugs? If it's just a COP that's gone bad, I would rather replace that than all the plugs until it warms up outside. The average temperature for this month at home here has only been 6 DEGREES!
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#8
TOTM November 2019
iTrader: (2)
Thanks but the jerk I get is one hard thud like its caught between neutral and gear. I had the issue you're talking about and did all those things and it cleared up but this is a transmission issue. Again, when I feel the thud or hard jerk it's almost as if it's caught between gears. Does not happen any other time
#9
TOTM November 2019
iTrader: (2)
Summers did you find it was easier to rebuild the coil packs or just replace them? They're like $70-$80 a piece arn't they? My friend just had his plugs replaced in his 2006 FX4 SCAB, but he's only replacing coil packs as he goes...it seems to be working for him replacing one at a time because of the cost, but I prefer to do things all in one shot...if I can afford it at the time
#10
Senior Member