What causes major hesitation under load when COLD
11-27-2003, 04:58 PM
#1
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What causes major hesitation under load when COLD
When my car is cold for the first 2 minutes it does not want to get off the line. Other than that the car drives beautifully. What could cause the engine to really feel like dying like it has no power only when it's cold and pretty much only when I'm taking off from a light.
11-27-2003, 05:29 PM
#4
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Most wear & tear on your engine is before it warms up to operating temp. so when your getting on it right after you start her up, not everything has had a chance to operate properly..my car does the same thing..when i start her up and drive down the street, i have no power and it feels like my throttle cable is loose...but in actuality it is just my LT1 saying "hey what the **** are you doing...warm my **** up.." kind of just like a lady...you gotta work em in and take it slow..get the juices flowing before you can just start pounding away. 
11-27-2003, 06:15 PM
#6
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Besides parts not being fully protected due to cold oil, combustion is inefficient until the engine comes up to operating temperature. In addition, the car runs in open loop during this period, your programming may not be optimized for your cam during open loop.
11-27-2003, 06:41 PM
#9
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Re: What causes major hesitation under load when COLD
Originally posted by 96 WS6
When my car is cold for the first 2 minutes it does not want to get off the line. Other than that the car drives beautifully. What could cause the engine to really feel like dying like it has no power only when it's cold and pretty much only when I'm taking off from a light.
When my car is cold for the first 2 minutes it does not want to get off the line. Other than that the car drives beautifully. What could cause the engine to really feel like dying like it has no power only when it's cold and pretty much only when I'm taking off from a light.
11-28-2003, 04:43 AM
#12
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Originally posted by 94zLT1
then whats all that **** under his name???
then whats all that **** under his name???
And I always warm my car up so that is not the problem. When did I say that I got on it right when I started driving???
Out of your 5 responses, 5 have been useless. The car never used to act like it does, and it's not a normal thing for your car to talk to you and tell you it's warming up... Unless it's carburated or something it doesn't need much warmup. 20 seconds maybe a little more of idle and then take off. I always keep the revs under 2k and the road speed under 35 or 40 until the oil pressure starts dropping indicating the oil is warming up. But either way, that has nothing to do with my problem.OBE1 - The car acted like this even before that cam. It's weird, one day it was fine. One day I go to leave my garage and what the hell??? My car doesn't want to move. For some reason I'm thinking clutch I don't know why, just one of those feelings. The car drives perfectly however once it's warm (good thing I'd hate to have a warm hesitation because my car is warm a lot more than it's cold).
Blackdog - A lean condition could do what I've been describing? I doubt the car is lean because on freescan I find that my exhaust leak is making the car *think* it's lean and therefore adds more gas, richening up the mixture. Could the exhaust leak have anything to do with it?
11-28-2003, 04:54 AM
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Yeah, best not to jump on the gas if you add a supercharger to these cars. Vortech specifically mentions that you shouldn't run the car above 2500 RPM until the engine is up to operating temperature.
When I start mine up, the idle usually goes to about 1800 RPM for 20 seconds and then gradually (over like 10-15 seconds) settles down to a 1000 RPM idle. I know the car still needs more tuning cause it also idles funny with the AC on (idle drops instead of going up like it's supposed to).
When I start mine up, the idle usually goes to about 1800 RPM for 20 seconds and then gradually (over like 10-15 seconds) settles down to a 1000 RPM idle. I know the car still needs more tuning cause it also idles funny with the AC on (idle drops instead of going up like it's supposed to).
11-28-2003, 04:55 AM
#14
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all do it when thier cold....you just gotta get the parts warm..
i think everyone thinks your pulling it out cold and stomping on it, which im assuming your not
but thats normal to have it to do that on you, it does go away after it warms up right?
i think everyone thinks your pulling it out cold and stomping on it, which im assuming your not
but thats normal to have it to do that on you, it does go away after it warms up right?
11-28-2003, 05:19 AM
#15
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Originally posted by JKDZ28
all do it when thier cold....you just gotta get the parts warm..
i think everyone thinks your pulling it out cold and stomping on it, which im assuming your not
but thats normal to have it to do that on you, it does go away after it warms up right?
all do it when thier cold....you just gotta get the parts warm..
i think everyone thinks your pulling it out cold and stomping on it, which im assuming your not
but thats normal to have it to do that on you, it does go away after it warms up right?
And to 97 ws6charged, my car does that same thing. I the idle jumps to about 1400 or 1500 and comes down slowly.