× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Thumping/snapping sound underhood
Posted to Technical Discussion Forum on 6/18/2012 16 Replies

I was testing the MAF sensor on this car. In the course of doing so I was holding the RPM at about 2500 rpm to read the air flow through the MAF. I noticed the car would occasionally make a random thumping sound that would sometimes sound like a loud snap. I c... Login to read more.

16 Replies Received (View Replies)

 

car Vehicle Data

1991 Buick Park Avenue 3.8L

Engine3.8 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

1991 Buick Park Avenue 3.8L

Engine3.8 L
Trans4-speed Automatic (Electronic)