[j cAT]

Originally Posted by twayne217

I have a 1999 chevy lumina with 190,000 miles, 3.1, v6, auto trans. the problem is that it will run great for a while and then start to stall and buck and hestiate. I have had the 02 sensor, egr, ingition mod., plugs, wires, all changed and same problem. I thinking ecm. Does not matter hot or cold it will run then sound like it is missing but will push past for a while, this is at any speed. Any ideas???? I need help this car is driving me crazy and broke!!!

Thanks.

check all wires going to ground esp. ecm wires and connections repair any damaged wires loose rusted ground lugs fasteners.......this is because codes and failure not consistant