1995 PONTIAC TRANS AM PROBLEMS
The earlier fuel-regulator test instructions have been withdrawn. Do not disconnect fuel-related hoses to look for spraying fuel near a running or recently operated engine. Have fuel pressure, ignition and injector operation tested during the hot no-start using the correct service procedure and appropriate equipment. Another owner's regulator repair does not identify the fault on this Trans Am.
Suggested Repair
During the hot no-start, have spark, fuel pressure with a manual gauge, and injector pulse checked using the correct service procedure and equipment. Do not disconnect fuel hoses to look for spraying fuel near a running or recently operated engine.
Conversation Summary
The owner of a 1995 Pontiac Trans Am 5.7L manual described progressive hard starting that became a hot no-start. From a cold start the car runs well and can be driven as long as it is not shut off, but after it reaches operating temperature it will not restart, or it runs poorly and dies, until it cools for several hours. The expert advised checking for spark, measuring fuel pressure with a manual gauge, and checking injector pulse when it will not start. An editorial note withdrew any fuel-hose spray test and said another owner's regulator repair does not identify this car's fault; fuel pressure, ignition, and injector operation should be tested during the hot no-start with the proper procedure and equipment.
