On my '93 F150 the check engine light comes on for a brief moment then goes off. When I hook up the computer to it, it says EGR valve opening not detected (code 33) and Secondary Air Injection Bypass (AIRS) solenoid circuit failure (code 82). I have checked the EGR valve for burned hoses or leaks and cant come up with anything, and as far as code 82 goes i dont know what to check for. Any ideas or help would be greatly appreciated