03-20-2020, 11:27 AM
3/19/20 Update:
Issue seems to be getting worse. As long as engine cold/cool drives and idles okay once at operating temp, then starts the drop to 500 RPM when sitting at idle. Once hesitation starts, it has become worse, lasts longer, harder to recover and happens more frequently.
Talked to mechanic today and gave stats then I cleared codes and have driven my usual route(s).
Code popped quick this time maybe 2 drive cycles. CEL and codes were:
PO400/pd PO400
Freeze Frame Data
Fuels System 1: OL-Drive
Load_Pct (%): 7.1
ETC (deg F): 180
Short FT1 (0%): 0.0
Long FT1 (%): 1.6
Map (in HG): 5.3
RPM (/min): 2941
VSS (mph):45
Very different from yesterdays data. Actually had closed Loop yesterday.
MAF arriving tomorrow. I think I will attempt install instead of waiting until Monday. Do I need to disconnect battery first? Clear any codes or just hook scanner up and clear codes if if nothing showing?
Issue seems to be getting worse. As long as engine cold/cool drives and idles okay once at operating temp, then starts the drop to 500 RPM when sitting at idle. Once hesitation starts, it has become worse, lasts longer, harder to recover and happens more frequently.
Talked to mechanic today and gave stats then I cleared codes and have driven my usual route(s).
Code popped quick this time maybe 2 drive cycles. CEL and codes were:
PO400/pd PO400
Freeze Frame Data
Fuels System 1: OL-Drive
Load_Pct (%): 7.1
ETC (deg F): 180
Short FT1 (0%): 0.0
Long FT1 (%): 1.6
Map (in HG): 5.3
RPM (/min): 2941
VSS (mph):45
Very different from yesterdays data. Actually had closed Loop yesterday.
MAF arriving tomorrow. I think I will attempt install instead of waiting until Monday. Do I need to disconnect battery first? Clear any codes or just hook scanner up and clear codes if if nothing showing?