Originally Posted by
geezer101
You can try a combo of things to get the throttle working properly - spray lube the cable so there's less drag, add a stronger return spring or a secondary spring, bend the upper arm of the accelerator pedal slightly to add more load on it and adjust the cable through the firewall. The heater core is not a nice job but if you pull the whole unit out it may only need a few solder repairs to seal the holes up (if it's the control valve, you'll be able to replace it). It will give you the opportunity to recon the whole unit and give it a huge clean (you can make new flapper door seals from adhesive weather seals from the hardware store for next to nothing). In all it's good news that your truck is getting miles and daylight :thumbup: