# 94 Suburban Fluttering

**URL:** <https://community.cartalk.com/t/94-suburban-fluttering/67147>\
**Category:** Maintenance/Repairs\
**Created:** [August 15, 2011, 9:52pm UTC](https://community.cartalk.com/t/94-suburban-fluttering/67147 "2011-08-15T21:52:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![eschnell](https://avatars.discourse-cdn.com/v4/letter/e/ecae2f/32.png) [@eschnell](https://community.cartalk.com/u/eschnell)\
**Post date:** [August 15, 2011, 9:52pm UTC](https://community.cartalk.com/t/94-suburban-fluttering/67147/1 "2011-08-15T21:52:46Z")

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Hi,

I have a 1994 GMC Suburban K1500 4x4 with a 5.7L V8 with Throttle Body Injection.

Ever since I got the truck, when I accelerate to say 1500rpm and hold the pedal, it will flutter, and when you let off the pedal it will almost stall but recover.

I checked it with a scan tool, it did not bring up any codes, but the O2 sensor was switching back from RICH to LEAN and back quickly.

I have changed the spark plugs, wires, distributor cap and rotor, fuel filter, fuel pump/sender, air filter, and cat back exhaust.

Thanks,  
Eddie