Got a 1993 300e that coughs and backfires thru the engine compartment. New fuel filter, MAF one year old, running premium fuel. Idles fine and revs up good in neutral, but under load it likes to "Pop" under the hood badly during acceleration, but on a cool crisp day it seems to run great. Hot humid days and the car won't hardly go down the road and shudders.

Very annoying. Suggestions appreciated.

Sincerely,
Rick Potter
Potters Barber Shop
Osage City, Kansas
barbershop@mchsi.com