New to site, great info here. I own a stock 88 sammy with 75,000 miles, had it since '97. Engine idles great but stalls when driven. On a short trip one night the engine stalled and died. When I raised the hood the exhaust manifold at the oxygen sensor was glowing red. When the stalling problems first started occurring I sprayed the carburetor with cleaner, changed fuel filter, blew out fuel line from pump to filter. No change. Several years ago had a muffler shop replace muffler/tail pipe because it was rusted out. The catalytic converter maybe stopped up or rusted out. Any ideals where to start first. Thanks.