I have a 92 deville. It starts and runs great for 20 minutes. As soon as it warms up, it gets sluggish, hesitates, and sometimes backfires through tailpipe or carb/throttle body. It will still drive if u give it a little gas the more gas u give it the more sluggish and hesitant it gets. What can it be. I have changed wires, fuel filter, rotor, dist cap, ign coil pack, and spark plugs and the problem remains.
have the same problem?
Saturday, August 20th, 2011 AT 8:41 PM