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Lurching when letting gas off.

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Old 01-12-2007, 12:47 PM
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Default Lurching when letting gas off. :UPDATED:

I was driving today and did a little bit of spirited driving. Now everytime i let go of the gas or when i apply gas the car lurches until a certain point. I recently did a manual tranny swap and a couple days ago I broke a bolt on my VC. Dont know if that has anything to do with it.

I also have a varying idle that goes between 1k to 2k rpm. Its on a 2000 honda civic. I'M also throwing a code but havent checked it yet.

Spark notes:

- Get semi severe lurching when add/let go of gas
- Have check engine light
- Broke a valve cover bolt (dont know if it matters)


Modified by DrewMD at 12:40 PM 1/13/2007
Old 01-12-2007, 12:50 PM
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Default Re: Lurching when letting gas off. (DrewMD)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DrewMD &raquo;</TD></TR><TR><TD CLASS="quote">
I also have a varying idle that goes between 1k to 2k rpm. Its on a 2000 honda civic. I'M also throwing a code but havent checked it yet.

</TD></TR></TABLE>

vacuum leak

whats a VC?
Old 01-12-2007, 01:07 PM
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Default Re: Lurching when letting gas off. (gezzuzz)

I think VC is valve cover. However it does sound like a vacuum leak if you're experiencing all that, but if you have a check engine light, run the codes and see what it says.
Old 01-12-2007, 01:35 PM
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Default Re: Lurching when letting gas off. (DrewMD)

how are your mounts? torque mounts?
Old 01-12-2007, 01:44 PM
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Default Re: Lurching when letting gas off. (DrewMD)

I really don't want to sound like an *** or insult you or anything, but what gear does this happen in and around what speeds? What I'm asking is, are you still learning to drive a stick? You said you just did a manual tranny swap a few days ago is why I ask, sorry if I'm completely off base.
Old 01-12-2007, 04:29 PM
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Default

ill check the codes tomorrow.

as for driving a stick im fairly decent. i did the swap about a month ago and this just started to happen.

ill check the mounts also.

this was caused due to a miss shift into second by my brother.

it does it in all gears at all speeds.
Old 01-13-2007, 09:39 AM
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Default Re: (DrewMD)

UPDATE: these are the code numbers i am getting:

#14: Idle air control valve
#71: Random Misfire Cylinder #1
#72: Random Misfire Cylinder #2
#73: Random Misfire Cylinder #3
#74: Random Misfire Cylinder #4

all this can be caused from a misshift? Did I bend a few valves?
Old 01-13-2007, 11:57 AM
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Default Re: Lurching when letting gas off. :UPDATED: (DrewMD)

BUMP need help ASAP!
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