Q&A

 Rookie

I did a full tune up on my sister-in-laws car, new plugs (ac delco) plug wires, o2 sensor, made sure the plugs were gaped proper, car ran OK prior to the tune up but was overdue by 40k/mi. After the tuneup, car ran rough like it was out of time but was more noticeable when test driving it... had a loss of power while stopped at a light and even stalled. Top end can had no miss, low end, felt like a vacuum issue/misfire. Took car to Auto Zone and had a diagnostic test done, PC codes came back o2 and Cam Sensor... this car has no cam sensor, and I had already replaced the o2 sensor. Got the car back to the house, still running rough, decided to put new coil packs on, now the car will not fire at all. There is gas getting to the plugs, but no fire, sounds similar to reversed timing however not sure how that is possible. Made sure that the wires are going to where they are supposed to. Installed a new Crank Sensor last night, and still no fire. The book says that the firing order is 1/3/4/2 however, the coil packs say 2/4/1/3 which is confusing. One online reference says that the first cylinder looking left to right is 1/2/3/4 and another reference says it is 4/1/2/3.

I am at wits end. The mechanic shops up here "rape" people, I have never seen such immoral charges before, In Va Beach, Va... a tune up for that car is $120, here in MI they want $540. Can anyone give me any idea as to what would cause this issue? I have even gone as far as to put the old plugs and plug wires back on in case there wan a issue with the new ones but the car still will not fire.

Thank you.

Derek R.
N. MI