82 Crossfire warm up time
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Joined: Nov 2011
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82 Crossfire warm up time
I have an 82CE that runs great. My question is, when I start it cold, how long should it fast idle before slowing down to 650 rpm? It 3-5 minutes normal warm up time? Would the fact that I changed the exhaust to true duals (with and appropriate O2 sensor bung) cause the extended warm up time? Just curious.
Melting Slicks
Joined: Mar 2006
Posts: 2,248
Likes: 67
From: Warrington PA
Finalist 2020 C4 of the Year - Unmodified
I have an 82CE that runs great. My question is, when I start it cold, how long should it fast idle before slowing down to 650 rpm? It 3-5 minutes normal warm up time? Would the fact that I changed the exhaust to true duals (with and appropriate O2 sensor bung) cause the extended warm up time? Just curious.
Yes 3-5 minutes is normal for a warm-up, that what I do everyday with my "dd" 82. I also have true duals, no cat and the warm-up doesn't take that long......Tom
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
If you have 'true dual' exhausts with NO heat riser valve on one side, it will take a bit longer for the engine to warm up. But, unless you live in Fairbanks, Alaska or farther north, that should be no big deal.
It is possible that the thermostat in your engine has malfunctioned in the "open" mode, so that it takes longer for the engine to build heat.
It is possible that the thermostat in your engine has malfunctioned in the "open" mode, so that it takes longer for the engine to build heat.
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
The first time I cycle through the gears, the shift from 3 - 4 has a momentary stall. Only once. After that, all is fine. I do agree that about 3 miles driving for me and the car is driving fine. Very cold weather or hot weather. Just seems that long to wake up.
Burning Brakes
Joined: Feb 2013
Posts: 1,062
Likes: 28
From: Burkburnett TX
I get about 3 or 4 minutes before I hear and feel it change over. Normally I am passing the same funeral home on my way out when it stumbles a little then perks up and runs great. Only does it on a completely cold startup. Like first one of the day. Nature of the beast. It idles smoother and runs leaner on changeover as well.
Le Mans Master
Joined: Jul 2000
Posts: 6,664
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From: columbia city in
I get about 3 or 4 minutes before I hear and feel it change over. Normally I am passing the same funeral home on my way out when it stumbles a little then perks up and runs great. Only does it on a completely cold startup. Like first one of the day. Nature of the beast. It idles smoother and runs leaner on changeover as well.
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Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
I get about 3 or 4 minutes before I hear and feel it change over. Normally I am passing the same funeral home on my way out when it stumbles a little then perks up and runs great. Only does it on a completely cold startup. Like first one of the day. Nature of the beast. It idles smoother and runs leaner on changeover as well.
Safety Car
Joined: Mar 2007
Posts: 3,652
Likes: 49
From: Bridgewater nj
Outside temp has a lot to do with the length of time it takes to drop the idle. It's been so cold in NJ that cruising down the highway with a warmed up engine will sometimes kick the idle up getting off the exit because the engine cooled to the point of running below operating temp.
On a spring day it will start dropping 2-5 minutes but won't get to 650 rpm until 10 minutes or a drive.
On a spring day it will start dropping 2-5 minutes but won't get to 650 rpm until 10 minutes or a drive.
