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Stumble/Chug driving off after cold start
2007 6 cyl Accord EX-L sedan, 56,000 properly maintained miles. No check
engine light, no obvious loose/damaged wires or hoses. On morning cold start in Park-- catches immediately with RPM about 1100-1200. Idle is a bit rough-- though accelerates smoothly up to 3000-4000 in Park. After a few minutes, RPM drops to around 800 or so, idle still a bit rough. The problem though is driving off at any point in these first few minutes, car chugs/stumbles right before up-shift point. The colder the outside temperature, the worse it is. After driving for several more minutes though, car then operates normally until restating the next morning. Also, after a cold start, if I let it idle until the thermostat opens and the fan cycles on, it drives off normally. Any idea what the problem is? |
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#2
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Stumble/Chug driving off after cold start
On 4/23/2015 2:01 PM, H.L. Hunley wrote:
> 2007 6 cyl Accord EX-L sedan, 56,000 properly maintained miles. No check > engine light, no obvious loose/damaged wires or hoses. > > On morning cold start in Park-- catches immediately with RPM about > 1100-1200. Idle is a bit rough-- though accelerates smoothly up to > 3000-4000 in Park. After a few minutes, RPM drops to around 800 or so, > idle still a bit rough. > > The problem though is driving off at any point in these first few > minutes, car chugs/stumbles right before up-shift point. The colder the > outside temperature, the worse it is. After driving for several more > minutes though, car then operates normally until restating the next > morning. > > Also, after a cold start, if I let it idle until the thermostat opens > and the fan cycles on, it drives off normally. > > Any idea what the problem is? > Air in the cooling system. Bleed it. |
#3
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Stumble/Chug driving off after cold start
On 4/23/15 2:07 PM, News wrote:
> On 4/23/2015 2:01 PM, H.L. Hunley wrote: >> 2007 6 cyl Accord EX-L sedan, 56,000 properly maintained miles. No check >> engine light, no obvious loose/damaged wires or hoses. >> >> On morning cold start in Park-- catches immediately with RPM about >> 1100-1200. Idle is a bit rough-- though accelerates smoothly up to >> 3000-4000 in Park. After a few minutes, RPM drops to around 800 or so, >> idle still a bit rough. >> >> The problem though is driving off at any point in these first few >> minutes, car chugs/stumbles right before up-shift point. The colder the >> outside temperature, the worse it is. After driving for several more >> minutes though, car then operates normally until restating the next >> morning. >> >> Also, after a cold start, if I let it idle until the thermostat opens >> and the fan cycles on, it drives off normally. >> >> Any idea what the problem is? >> > > Air in the cooling system. > > Bleed it. Well, did that. There wasn't really any air in there. Still doing it :-( -- If your wife catches you looking at another woman, turn to her and say “I’m sure glad you don’t dress like that.” |
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