Junior Member, warming up (<31 posts)
Join Date: Oct 2018
Thanked 2 Times in 2 Posts
Replace the Coolant Temp Sensor (that really controls fuel mix). Because your issue goes away after warm up, it could be that the cold start ohm reading on the CTS is faulty. It operates in a given range and signals the computer (based on coolant temp) to change fuel mix.once engine reaches operating temp it remains constant if operating normally. You could test this but if never replaced or unknown save time and replace the part anyway for $20 to $25. Report back.
2003 M5 Titanium / Imola, bone stock
1986 535 B35, stahl headers, LTWFW, Supersprint