Civic bucks/jerks while driving - Honda Civic Forum

8th & 9th Generation Civic In the years from 2006 to 2015 Honda released its 8th & 9th Generation Civic. 9th Gen Chassis Codes: FB2, FB4, FB6, FG 3, FG4. 8th Gen Chassis Codes: FG1, FG2, FA1, FA3.

Civic bucks/jerks while driving

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Old 09-15-2018
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Civic bucks/jerks while driving

I would greatly appreciate any suggestions on how to solve a very frustrating problem with my 2012 Honda Civic where the engine can buck/jerk while driving (at almost any speed).
I can sometimes get the bucking by slowly backing off the throttle: if I take my foot off the gas it will stop.

The problem is very intermittent and my Honda dealer was not able to duplicate the trouble during a test drive. Their full diagnostic tests did not reveal anything.

Plugs have been replaced and a new ignition coil has been tried in each location with no success.

The problem has been going on since late 2017 and three different mechanics have been unable to solve the problem. They all agree that it's an engine related problem rather then the transmission.
Any and all suggestions greatly appreciated.
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Old 09-15-2018
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Re: Civic bucks/jerks while driving

How many miles on the car?
List mileages of all transmission fluid services throughout the cars life
How long ago was most recent trans fluid service?
Was Hondas DW-1 fluid used, or was it some other fluid?
(I absolutely expect TCC shudder if trans fluid is not serviced, or if incorrect fluid is used)

The problem is very intermittent and my
It's gotta act up somewhat consistently if you expect anyone to figure it out.

Can you make a video that shows what's going on?
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Old 09-15-2018
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Re: Civic bucks/jerks while driving

There are 49000 miles on my Civic. Yes the transmission fluid was changed when I had Honda look into this problem.

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Old 09-18-2018
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Re: Civic bucks/jerks while driving

I'm not an expert, but you could try cleaning out your fuel system, perhaps there's some dirty gas that went in the tank at some point and bits keep passing through the engine? For $5 for a bottle of Techron concentrate at Walmart it's at least worth a shot - maybe? Just try and get the fuel tank as low as you possibly can first.
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