I didn't disconnect battery but removed coils and replaced 80K mile plugs with new Denso OEM plugs. I sprayed a little throttlr body cleaner around the throttle body and its motorized and doesn't move.
After completing, I drove car and it runs terrible after only replacing plugs. It seems like it is sluggush, didn't downshift when applied gas, seemed to have a miss but no Check engine light came on. The only plugs changed were on the passenger side.
Is there a protocol you have to follow? I'm wondering if I shouldn't put the old plugs back to see if it ran as good as it did before I started replacing plugs.
Did the battery have to be disconnected first B4 starting?
Any help is appreciated folks.
Thanks