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Re: question on C (neither L nor B)

To: Matt Trebelhorn <matt.lists@trebelhorn.com>
Subject: Re: question on C (neither L nor B)
From: Paul Parkanzky <parkanz1@msu.edu>
Date: Fri, 11 Mar 2005 12:11:09 -0500
A vacuum leak maybe?  An opening in the induction system somewhere past 
the AFM allowing un-metered air in?

Paul Parkanzky

On Mar 11, 2005, at 11:39 AM, Matt Trebelhorn wrote:
> It's a reasonably good car, but I'm looking for some advice because it 
> hesitates or stutters at times -- mostly noticeable at low speed and 
> low throttle openings, when it drops in to top gear.  It will stutter 
> a little if I don't press on the gas enough to kick down a cog.
>
> Anyway, I don't even know if this is a motor problem or a transmission 
> problem.  It isn't temp dependent (car temp or ambient) as far as I 
> can tell, except that when the car is really cold (below freezing,  
> the first half-mile or so from a cold start) it won't shift in to top 
> gear.  But the stutter can still happen in those circumstances, just 
> not in top gear.
>
> I can think of a few dozen things it might be, but I would just be 
> taking a shot in the dark.  Any number of sensors in the FI loop, some 
> of the voodoo inside the transmission, maybe even something as simple 
> as a cable adjustment.  But I have no idea where to begin.  The haynes 
> manual isn't particularly helpful, as far as I can tell.  I've sprayed 
> some carb/injector cleaner stuff on the throttle body, and I gave it a 
> basic tuneup over a year ago (k/n af, fuel filter, 
> cap/rotor/plugs/wires.)  It has 240,000 miles on it.
>
> Any ideas/suggestions? Thanks,
> M.






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