Whine Noise Varying with RPM or Fluid Pressure. Pontiac Sunfire 2001

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2001 🢒 Sunfire 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 3T40 🢒 Whine Noise Varying with RPM or Fluid Pressure

Checks

Cause

Additionally, a popping noise similar to popcorn popping

Oil Pump System

•	Verify that the noise is internal to the oil pump during a preliminary oil pressure check. An increase in line pressure will vary an oil pump noise

•	Pump cavitation is indicated by bubbles on the fluid level indicator

•	Check the transmission fluid strainer for a filter seam leak

•	Check the transmission fluid strainer seal for proper positioning or for a cut seal