Hey Guys
I am having an issue with my 03 Trailblazer. When the truck is idling and i give it some light gas the RPM's drop and the engine feels like it hesitates and then sort of stumbles when the RPMs dip. Then the RPMs go up and drop back down to normal idle. I replaced the spark plugs since they were the originals from the factory with new AC Delco Iridiums 41-103 in an attempt to fix the problem, but there was no change. I also recently changed my ignition switch since it was going bad. Recently removed and thoroughly cleaned the throttle body as well and pulled the PCM fuses after to allow it to reset.
I made a video of what is happening when I give it light gas when idling. It seems off to me, but maybe this is normal for these trucks?
http://youtu.be/ZK_erTvLBCg
I'm thinking maybe I should swap out the fuel filter next since that looks original as well and needs to be changed either way.
Thanks in advance for any advice.
I am having an issue with my 03 Trailblazer. When the truck is idling and i give it some light gas the RPM's drop and the engine feels like it hesitates and then sort of stumbles when the RPMs dip. Then the RPMs go up and drop back down to normal idle. I replaced the spark plugs since they were the originals from the factory with new AC Delco Iridiums 41-103 in an attempt to fix the problem, but there was no change. I also recently changed my ignition switch since it was going bad. Recently removed and thoroughly cleaned the throttle body as well and pulled the PCM fuses after to allow it to reset.
I made a video of what is happening when I give it light gas when idling. It seems off to me, but maybe this is normal for these trucks?
http://youtu.be/ZK_erTvLBCg
I'm thinking maybe I should swap out the fuel filter next since that looks original as well and needs to be changed either way.
Thanks in advance for any advice.