2004 chevy trailblazer ls erratic idle speed, sluggish power when increasing speed, high power preventing speed to decrease bellow 35 when decreasing speed without breaking hard, last obd2 freeze frame :
load% 27.5 Etc°F 194 Shrt ft 1: 2.3 Lng ct 1: -4.7 MAP (inHg) 9.7 RPM 629 VSS 0 Spark Adv. 13 IAT°F. 72 TP% 19.2
- incomplete monitors: catalyst and secondary air
- N/a: heated catalyst, egr system, a;c refridge.
Please anybody have any ideas what could be the cause, for my to look into