Recently had to have my computer replaced due to no spark on two cylinders . After receiving my truck back from the shop it has spark but runs funny . Every time I hit a bump my theft light goes off and stalls my engine , requiring me to turn the ignition off and restart the truck. My dash cluster also does not read properly anymore but was perfect previous to the shop owner working on it . In addition to all this my overdrive doesn’t work and my truck takes forever to go up to speed.
I do not want to take it back to this shop , please if anyone has any advice let me know where to start .


My ranger is an 04 6cyl 3.0 RWD

 

My question is, why don't you want to take it back? If you took your truck to a reputable shop to be worked on then I would take it back and let them fix it. One reason people use "shops" for repairs is for reasons just like yours. Its on them if their repair fails.