I purchased my current TB about a month ago with a little over 60,000 miles on it. It is in good shape, but it has a slight rough idle.
After reading about throttle body cleaning on this site, my buddy came over and helped me take the tb out and clean it, and it was dirty. We did do the battery disconnect for the PCM re-learn. I also did the fuel system cleaning with Chevron Techron Concentrate in the gas tank.
I am still having a bit of a rough idle problem, though. It doesn't matter if the truck is cold or warmed up, nor does it matter if it is in gear or not or the air conditioner is on or not...there is a bit of a rough idle regardless.
Umm, I want to provide you all with as much info as I can so you all can help me troubleshoot. The air filter, an AC Delco, is new. The oil has been changed. I only put top tier gas in it, but I can't account for what quality of gas was put in it prior to my ownership.
The rough idle is there. The RPMs at idle are steady at 650; however, because I don't have a scan tool, there might be something that is going on that is not showing accurate on the gauge. During rough idle, the steering wheel does not shake. I am not having a misfire or any codes...so far. The performance of the vehicle is pretty good. It's pretty responsive, not having a problem with hesitation, and it passes the 0-60 test with flying colors.
I hope all that info helps to narrow down what might be the problem.
If you all could help me troubleshoot and throw out some ideas, I'd appreciate it.
Thanks
After reading about throttle body cleaning on this site, my buddy came over and helped me take the tb out and clean it, and it was dirty. We did do the battery disconnect for the PCM re-learn. I also did the fuel system cleaning with Chevron Techron Concentrate in the gas tank.
I am still having a bit of a rough idle problem, though. It doesn't matter if the truck is cold or warmed up, nor does it matter if it is in gear or not or the air conditioner is on or not...there is a bit of a rough idle regardless.
Umm, I want to provide you all with as much info as I can so you all can help me troubleshoot. The air filter, an AC Delco, is new. The oil has been changed. I only put top tier gas in it, but I can't account for what quality of gas was put in it prior to my ownership.
The rough idle is there. The RPMs at idle are steady at 650; however, because I don't have a scan tool, there might be something that is going on that is not showing accurate on the gauge. During rough idle, the steering wheel does not shake. I am not having a misfire or any codes...so far. The performance of the vehicle is pretty good. It's pretty responsive, not having a problem with hesitation, and it passes the 0-60 test with flying colors.
I hope all that info helps to narrow down what might be the problem.
If you all could help me troubleshoot and throw out some ideas, I'd appreciate it.
Thanks