1998 Chevy Suburban, 5.7 (350) Cold Start issues!

[Russell W]

Runs great (once started). If it's warm, no problem. If it's cold...no luck. Replaced fuel filter, pcv, air filter, battery, battery cables. Alternator checks out, fuel pressure is 54 lb. at the rail valve, no fuel IN the injection electronics causing short, intake air temp sensor appears to be fine....AAAAHhhhhh! Help. P.S. Fuel pump replaced about a year-and-a-half ago.

[GRUSS]

REMOVE AND CLEAN THE THROTTLE BODY, AND INTAKE MANIFOLD INLET. CARBON DEPOSITS WILL BLOCK SUFFICIENT AIR INLET TO THE MOTOR. THE ECM WILL ATTEMPT TO COMPENSATE, AND CREATE A RICH MIXTURE BEYOND THE ECM,S ABILITY TO COMPENSATE I.E. RUNS LIKE CRAP, BUT ONLY WHEN COLD.