I'm trying to help a friend out on his 2001 Buick Century. He had a mobile mechanic come do plugs, wires, changed filter and fluid on the trans. Car has a little over 80k on the clock.
After doing the work the car started missing at load only, not off idle. The service tech told Tony he needed a new computer because it was not feeding info back
Well A-tap gives me a ton of info back and I think the tech was just trying to make a few more bucks..
I have hooked up my laptop and found the car missing across most cyl's (Using A-tap).
I have re-routed the wires to make sure they were not arking with no luck. They all also seem to be set well on the plugs and on the coils.
I double checked the firing order against some posts here and everything looks ok (firewall being odd's 1,3,5 going back and radiator side 2,4,6 going back). Everything lines up based on the numbering on the coil packs.
No SES light not DTC's either.
I'm ruling out injectors because the car ran perfect before the work was done on it. I'll start checking things like AIT sensor, MAF Sensor and some other things but I really don't think those are casing the miss.
Any thoughts?