If have a 2002 liberty and had the upper and lower radiator hose replaced today. The vehicle now has check engine light flashing, has a bit of a hard idle, and misses/learches off the line. The vehicle ran fine prior to the maintenance. The technician is at a loss as to what is going on, but lead tech will look at it tomorrow. Any thoughts as to what the issue can be that I can pass on to the tech.? Thanks.