My Throttle Positioning Sensor has been on it's way out for a while now but for some reason if I use the spray on my windshield wipers the second I let off the botton my TPS stops working and the engine light goes on and normally I just let off the gas for a few seconds then it will work fin again. and sometimes if I hit the horn it will do the same thing.. so are those three things on the same fuse? or relay? just wondering how that can cause my TPS to stop working. I had the truck scanned and the engine light is the TPS.