Well they cannot actually tell what part to replace by simply scanning it. Scanning the system just gives a code number, which identifies a problem somewhere in a particular system. So what code number did they give you?
Also, raise the hood and recheck your work. If a coil wire or something came loose, it could easily keep your car from starting.
The next easy thing to check is for sparks. You can do this with a tester that is available at AutoZone or any other auto parts store. Here is a link for one on Amazon: https://www.amazon.com/Lisle-20610-Inline-Spark-Tester/dp/B0002STSC6/ref=sr_1_3?ie=UTF8&qid=1501325755&sr=8-3&keywords=spark+tester
Basically, you pull the plug wire off of the distributor and plug in this tester between the the distributor and the plug wire. Then get someone to turn the key while you observe it. If it flashes, then you have spark. Check all of the cylinders and the wire going from the coil to the distributor. Sparks should be bright and consistent.
Let us know what you find.
Sunday, January 7th, 2018 AT 6:45 PM