Hello,
My 1989 DeVille is experiencing extreme backfiring, hesitation, and loss of power/power surging. When driving the car it lags, then starts to hesitate/surge, and then backfires. I've blown both the Cat. , and the muffler. So far we've done a complete tune up, replaced the coil, and distributor, replaced the fuel pump, and the ECM(computer). The car seemed to mellow for about 50 miles after the computer was changed, but then reverted to it's old ways. Not sure what else is really left except maybe the timing chain, or maybe the crank or cam shaft. Also according to a different mechanic then the one currently changing all of the parts, spark, and pressure are good. So any help woukd be greatly appreciated...thanks.
My 1989 DeVille is experiencing extreme backfiring, hesitation, and loss of power/power surging. When driving the car it lags, then starts to hesitate/surge, and then backfires. I've blown both the Cat. , and the muffler. So far we've done a complete tune up, replaced the coil, and distributor, replaced the fuel pump, and the ECM(computer). The car seemed to mellow for about 50 miles after the computer was changed, but then reverted to it's old ways. Not sure what else is really left except maybe the timing chain, or maybe the crank or cam shaft. Also according to a different mechanic then the one currently changing all of the parts, spark, and pressure are good. So any help woukd be greatly appreciated...thanks.
Nov 10, 2014 at 1:15 PM
