I've also the same problem on my car ! When the engine is (very) hot, after some hard driving, the starter has difficulty to crank the engine: it's as if the battery was low, there are hesitations. But the battery is well charged and this occurs only when engine is hot. Do you think that i've a weak starter motor ? What's happen in the starter when the engine is hot ? I've seen in the Parts List that ther's was a "starter heat shield" (written: "when used") # 1558 394. Only for Chrysler and Imperial with 392. Does someone know what is this part and what is its shape ? -- Philippe COURANT (Pau, France) Imperial 57 Crown convertible Buick 58 Roadmaster sedan - American Car Club de France (ACCF) : http://www.accf.com - Chrysler Imperial France : http://www.ifrance.com/c-i-f - Cadillac " Standard of Excellence " : http://www.ifrance.com/accf-cad - SportsCars : http://www.ifrance.com/accf-sprtcar