running very rich waht can i do?
10-04-2003, 02:57 PM
#1
running very rich waht can i do? hey guys, i got 28,000 miles on my car, and have noticed the thing is running really rich, anyone have any ideas how to fix this, i was thinking maybe replace the 2 o2 sensors in the front but waht do you guys think? i also have the mods listed in my sig, if that has anything to do with it
10-07-2003, 08:39 PM
#6
TECH Senior Member
Re: running very rich waht can i do? "and when i put my finger on it and smell it it smells like gas.. i have had numerous people tell me i am running rich"
When you put your finger on it you're not at wide open throttle and thus you're operating in closed loop (if not, you'll have a check engine light.) When operating in closed loop your mixture is held at 14.7:1.
You have no idea if you're running lean or rich at WOT. You need to at least check the S1 O2 sensors at WOT with a diagnostic scanner to get an idea of your WOT mixture. Get autotap (it's software that is used with a laptop computer) or find someone who has it. Or, if you might talk someone with a Tech II (what your local GM dealer has) to take a ride with you.
When you put your finger on it you're not at wide open throttle and thus you're operating in closed loop (if not, you'll have a check engine light.) When operating in closed loop your mixture is held at 14.7:1.
You have no idea if you're running lean or rich at WOT. You need to at least check the S1 O2 sensors at WOT with a diagnostic scanner to get an idea of your WOT mixture. Get autotap (it's software that is used with a laptop computer) or find someone who has it. Or, if you might talk someone with a Tech II (what your local GM dealer has) to take a ride with you.
