- Jul 11, 2012
- 17
Ok so my '02 Envoy, which I've had since showroom, has 198,000 miles on it and a couple of weeks ago it started to hesitate/stumble when I would get to 50 mpc. It would be that way until I got to about 60 or so. I wondered if I got bad gas in it but that was two fill ups ago so yesterday I figured I'd floor the pedal to rev the engine on the highway to see if that would do anything. It helped a good amount in that it doesn't hesitate/stumble when slowly going through 50 to 60. What I do notice now though is that the sound the engine makes is like it's muffled, but I honestly don't know if it's always sounded like that or I'm noticing it because the stumble brought my attention to that speed reading.
And if anyone knows, did my racing the engine help clean out gunk in the injectors or help the throttle body butterfly loosen?
Sorry it's so long and thanks for any info or help.
And if anyone knows, did my racing the engine help clean out gunk in the injectors or help the throttle body butterfly loosen?
Sorry it's so long and thanks for any info or help.