If all your driving is city driving for short periods your muffler could be full of water. Get it out on the road for an hour or two and see if that helps.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.