Originally Posted by dannyboy950
You may just want to pay the $100.00 fee most shops charge to run diagnostics.
The cheapest scanner software (lap top based) capable of commanding cylinder contribution tests is the Auto engineuity at about $600.00 for the software, enhanced Ford package and the interface adapter. Everything else is in the $1000.00 plus range.
I got mine done for $40, the mechanic was friendly, he made sure to let me know his machine cost 30K with continuous upgrades. Found a #4 injector bad. Maybe I got lucky, the first time i ever took any vehicle to a mechanic. The stealership wanted $100+