No Start Reduced Engine Power 2005.
From day one this Junkbalt ( as we affectionately nicknamed it ) has given us problems. Not some youngster beating the car (59 years old !!) From all the common problems -radio - brake sensor (took it back to dealer twice for the 2 problems. Still kept doing it. Told them what the problem was -but they put a band aid on major operation.Also told them if it was not fixed RIGHT- The next time they would see me is when I drive it through the showroom window and back to the service Dept )- chrome falling off interior handles - interior near impossible to clean - trunk lock won't open with key and more, to the reduced engine power, front lower control arm bushings, fuel filter,O2 sensor and of course MORE. The reduced engine power has been going on for 3 months.So it was disconnect the battery after you pulled to the side of the road ( Safety issue because it didn't always happen at a safe place to pull over.). Wait a few minutes then reconnect battery.It would start and power would be back for maybe a day or two and possibly as long as a whole week.I disconnected the battery for 24 hours and it was OK for over a month. Until the other day.It went to reduced engine power.Disconnected the battery a dozen times.No luck ! Started home ( only 4 miles away) at the break neck speed of 8 MPH. Had to stop at the Post Office.Made the mistake of shutting it off. A no start when I tried.Had to get it towed home. Car will not start and because the battery was disconnected there are no codes to be had.It is getting gas, but may have a weak spark.In the past year I replaced the coil pack, MAF sensor , lower control arm bushings, fuel pump,rotors, plugs, head gasket and probably a few things I forgot about.Anyhow, when you turn it over, it won't start.Now and then you hear a poof like it might want to do something.Then nothing but the starter turning it over.It is getting fuel. It seems to possibly have a weak spark (looks yellow) .There are 129,000 troubled miles on it. Fuel pump is wired direct because of the junk GM wiring harness.But fuel pump is working.At wits end with this car.I have considered possible sensor or a computer problem. Where should I start?