I have a 1986 IROC 305 TPI, the computer is showing codes 15, and 34...both sensors are hooked up. First the MAF. The car does have trouble first starting up in the morning but runs beautifully after that. Takes about three tries and when you step on the gas it just stalls it has to run by its self for about 30 seconds. The coolant temp code has me completley lost. The car does not over heat runs at about 180 after the thermostat opens and the fan kicks on at about 130...there are no aftermarket mods that I know of...what could these problems be...relays?? computer????