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#1
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cold start hesitation solved?
well, i have a problem when the weather gets cold - i park my car at a subway Park n' Ride. i have to drive up a big hill shortly after leaving the lot. if its fairly cold out (>45deg) and i don't warm it up for bit after sitting all day, it would stutter and hesitate by the time i reached the top of the hill, sometime even kicking a 'misfire, cyl#1' code. after warming up, all is fine.
so i figured i'd clean my throttlebody, and more importantly, the idle air control valve, considering it only functions when i have troubles (cold starts). upon removing the plastic box that connects to the throttlebody, i discover that the rubber portion sticking out of the box that slips over one of the throttlebody openings is folded a bit inside itself at the bottom! probably enough for a small amount of extra un-metered air to enter the throttlebody. i'm thinking as the engine warms up, the rubber might expand, sealing up the small opening caused by the fold...... either way, i hope the cleaning / fixing the creased rubber around the TB opening solves this trouble! i guess i'll have to wait a few weeks to find out for sure when i use the Park n' Ride again.
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Alan 1987 928 S4 (Black) SOLD! 1997 SVX LSi (Ebony) SOLD! 2005 Legacy GT (Silver) [Cobb Stg 2+] SOLD! 1987 928 S4 (Black) SOLD! 2005 Forester XT Premium (Crystal Gray Metallic) SOLD! 2008 Lancer Evolution X MR (Apex Silver) [Cobb Stg 1+] 2015 Outlander Sport 2.4GT AWD (Mercury Gray) 2013 G37xS (Obsidian Black) |
#2
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Good luck, hopefully that was the problem.
It makes sense to me.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#3
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I used to have a bit of a hesitation when cold. It disappeared after I installed my ECUtune Stage One. I never had misfires though. I guess this doesn't help as you have obdII. Might make you want ecutune even more though....
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Collin 1995 L AWD Locker 1987 Porsche 944 turbo 80k miles. MBC + Chips. Relatively Stock |
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