Chadryan44
Newbie
First of all, mostly a lurker that has heavily benefitted from the group's wisdom, thank you so much for your time!
I have a 91 C1500 with a 5.7 TBI. I'm having issues with heavy idle fluctuation, especially after the engine is warm. Sometimes the fluctuation is so hard, engine dies. Also dies when shifting from park.
Thanks to y'alls expertise, I've been able to pull a few data logs from my truck. I have no idea what to look for. Could someone help me understand what to look for? I've attached a zip file with 2 CSV files showing the data. May as well be a foreign language to me! I do see MAP reading fluctuation quite a bit, but I'm clueless.
Any help y'all could give would be wildly helpful!
I have a 91 C1500 with a 5.7 TBI. I'm having issues with heavy idle fluctuation, especially after the engine is warm. Sometimes the fluctuation is so hard, engine dies. Also dies when shifting from park.
Thanks to y'alls expertise, I've been able to pull a few data logs from my truck. I have no idea what to look for. Could someone help me understand what to look for? I've attached a zip file with 2 CSV files showing the data. May as well be a foreign language to me! I do see MAP reading fluctuation quite a bit, but I'm clueless.
Any help y'all could give would be wildly helpful!