What size serpentine belt on a 1994 Pontiac firebird 3.4 CAN bypass the ac compressor?

There isn't a single standard serpentine belt size that will bypass the AC compressor on a 1994 Pontiac Firebird 3.4L. The size you need depends on which alternator, power steering pump, and other accessories are driven by the belt. The routing changes when you remove the AC compressor, significantly altering the belt length requirement.

You cannot simply guess at a belt size. Using an improperly sized belt can lead to belt slippage, premature wear, and potential damage to your engine's components.

To find the correct belt size:

1. Consult a repair manual: A Haynes or Chilton manual specific to your 1994 Pontiac Firebird 3.4L will provide the correct belt size for bypassing the AC compressor. This is the most reliable method.

2. Visit a parts store: Take your Firebird to an auto parts store (AutoZone, Advance Auto Parts, NAPA, etc.). They have belt size charts and can help you identify the proper replacement size after you remove the AC compressor. They may even have a tool to measure the required length. *Be sure to tell them you're bypassing the AC compressor.*

3. Measure the belt yourself (less reliable): This is the least recommended method as it requires precision. After removing the AC compressor, you'll need to route the belt as it will be when the AC compressor is bypassed and then carefully measure the length needed. Even a slight error can cause issues.

In short: Don't try to guess. Use a repair manual or consult a parts professional. Getting the correct belt size is crucial to avoid potential damage to your car.