car bogs when cold
Thread Starter
Racer
Joined: Nov 2002
Posts: 471
Likes: 0
From: Queens NY
car bogs when cold
ive noticed if i hit the gas in neutral before my car is all warmed up the throttle response really sucks and the car kinda bogs
any ideas? its got new plugs, accel wires, accel cap, rotor, o2, timing is right on, msd box,
any ideas? its got new plugs, accel wires, accel cap, rotor, o2, timing is right on, msd box,
Race Director
Joined: Aug 2002
Posts: 13,356
Likes: 0
From: tucson AZ
St. Jude Donor '04 & '05
Re: car bogs when cold (CarAteMyMoney)
My thoughts are that any car....be it vette or whatever would "BOG"..when cold...at least until it reached normal operating temp's......
Don't you???????????????????????????
We have all been around to know that fact.......haven't we??????????
tony :crazy:
:eek: :eek: :eek:
Don't you???????????????????????????
We have all been around to know that fact.......haven't we??????????
tony :crazy:
:eek: :eek: :eek:
Instructor
Joined: Sep 2001
Posts: 131
Likes: 1
From: Chandler AZ
Re: car bogs when cold (vmi_vette)
FYI...
Before I got the custom chip for the LT4 Hot cam I had installed, my car would not respond smoothly to throttle inputs when cold/slightly warmed up. It felt like the car was bogging down. Basically the stock programming was commanding the wrong fuel flow. It was fine during cruising and steady state throttle position because the car was in closed loop. With the new chip, the car will take off even if cold.
Keep in mind that you shouldn't rev the engine very high until it reaches operating temperatures.
:seeya
Before I got the custom chip for the LT4 Hot cam I had installed, my car would not respond smoothly to throttle inputs when cold/slightly warmed up. It felt like the car was bogging down. Basically the stock programming was commanding the wrong fuel flow. It was fine during cruising and steady state throttle position because the car was in closed loop. With the new chip, the car will take off even if cold.
Keep in mind that you shouldn't rev the engine very high until it reaches operating temperatures.
:seeya
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Re: car bogs when cold (vmi_vette)
1. Check for a vacuum leak. That will cause it to be real lean when cold.
2. Check your cold start injector (if you have one) drivers cide lower manifold area. Make sure its plugged in and working.
3. Make sure you have the proper basic state of tune i.e. good wires, plugs, air filter ect.
Good luck and keep us informed on how you make out.
Bill C
2. Check your cold start injector (if you have one) drivers cide lower manifold area. Make sure its plugged in and working.
3. Make sure you have the proper basic state of tune i.e. good wires, plugs, air filter ect.
Good luck and keep us informed on how you make out.
Bill C
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