The sticky accelerator is more likely caused by lack of lubrication between the accelerator shaft and the steel tube it runs in under that removable plate which is bolted to the floor pan beneath the driver's feet. It is one of those maintenance items which is neglected because of "out of sight, out of mind". The complete shaft and tube have to be removed and separated fom each other, then cleaned and regreased and it is not a 15 minute job.