My son was "helping" me out by filling the windshield wiper fluid.... only problem is he added it to the radiator. As soon as I found out I put the hose in and let it overflow with water hoping to resolve any possible problems. A few weeks later it started running rough, sputtering as such, and the check engine light would come on, put it in the shop and had 1 sensor gone and 1 bad. They replaced them and now a few weeks later it's back to stuttering and check engine light is on again. Should I empty (try to figure out how) the radiator and refill it? Do you think the sputtering and bad sensors are a result of the window wiper fluid?

 

chances are if he only topped off the coolant it should have really no effect on it,, Iam guessing what a quart was added at most if the Rad wasnt really really low ??? ,,,,,, what sensers were faulty ??????

If its been several years since the coolant has been changed its time for now anyway

 

Post the CEL codes and we can help you. The Washer fluid has nothing to do with it I bet. Hell, My dad sprung a leak in his old Chevy and ran washer fluid as coolant (it was winter) until he got it home.