2001 Ranger XLT AC issue
My 2001 XLT AC blower's speed fluctuates. I have owned this truck from new and never had an issue with the AC in 24 years. It blows very cold, then after the truck heats up, the blower slows, I switch it to normal AC and it starts working again for a short time. Back and forth from AC to max AC , the fan's 3 speeds stays the same also. No issues for 24 years and now this. Any ideas please?

