'93 LT1, hesitation at idle, doesnt want to crank
Hi guys, 93TA LT1 stock except for msd opti upgrade. New gas, plugs, wires. Idles fine at about 800rpm, but when I give it gas it hesitates up to around 1500rpm. More throttle seems to bring more hesitation. If I ease on the gas I get a stutter before it revs, if I punch it, it tries to (or does) stall out completely, and often backfires before finally revving up. It also doesn't want to crank up cold. Battery is fine, so I guess this is probably related to the issues at low rpms.
My 1st thought was mass air, but when I went to unplug the sensor, I realized I don't have one (kind of a newb here). Now I'm thinking maybe backflow pressure or EGR. Just looking for advice on where to go next from people who have more experience than I do. Thanks in advance for any help you guys can provide.
Last edited by Bandit93; 07-26-2011 at 06:02 PM.
Reason: better info