Running in Cold Weather Question
08-07-2009, 08:38 AM
#1
2nd Gear Member
Thread Starter
Join Date: Jul 2007
Location: INDY
Posts: 297
Running in Cold Weather Question
We took the stang out last night. it was abound 60 degrees. Anyways, the mustang was running alittle weird. I notice at idle it seemed to be ok, but when I gunned down the road, it seemed to be boggy around 40 - 50 mph. then take right off. However, When I got the stop sign down the road, it sounded like it was about to die, or a real slow idle like it does want to die.
Hope this has enough info. Thanks for the brain storms!
Hope this has enough info. Thanks for the brain storms!
08-07-2009, 12:33 PM
#3
5th Gear Member
Join Date: Apr 2007
Location: Texas Hill Country
Posts: 2,100
+1 on the tune. I run three different tunes...One for winter, one for summer, and one for fall/spring. Humidity, temperature, and altitude really affect the air to fuel ratio and thus the carburetor tune. EFI takes all that into consideration through the use of sensors. Carbs are great, but you have to live with a few quirks sometimes or be willing to tune it a bunch. I would wait and have it tuned in the medium temperature that you plan to run it. I know it gets crazy cold in Indy, so you probably do not drive it between Oct and March. If so, then now is a good time to retune.
08-07-2009, 08:04 PM
#5
6th Gear Member
Join Date: May 2009
Location: PA
Posts: 5,232
Hmmm… Sounds way too sensitive to me. My 289HP has no provision for a heat stove, and runs perfectly in tropical Florida or 3 feet of northern snow, without seasonal adjustment.
08-07-2009, 11:29 PM
#6
6th Gear Member
Join Date: Apr 2007
Location: California
Posts: 10,468
A good carb that's properly set up shouldn't NEED to be retuned regardless of weather extremes. I run mine between 110+ summers and sub freezing winters and rarely ever retune it(I'm lazy).
We need more info though, is this a new problem, when was the carb last tuned, how was it tuned etc.
We need more info though, is this a new problem, when was the carb last tuned, how was it tuned etc.
08-08-2009, 01:59 AM
#7
4th Gear Member
Join Date: Aug 2006
Location:
Posts: 1,116
+1 on the tune. I run three different tunes...One for winter, one for summer, and one for fall/spring. Humidity, temperature, and altitude really affect the air to fuel ratio and thus the carburetor tune. EFI takes all that into consideration through the use of sensors. Carbs are great, but you have to live with a few quirks sometimes or be willing to tune it a bunch. I would wait and have it tuned in the medium temperature that you plan to run it. I know it gets crazy cold in Indy, so you probably do not drive it between Oct and March. If so, then now is a good time to retune.
it doesnt run like that at all during the day? had it been sitting around for a while and you were driving it for the first time?
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