My 1990 760 turbo. Starts runs rough until warmed up, after warming up runs down road about 10 miles and then starts running rough getting worse the farther you go. If I push the gas down it flutters and falls on it,s face. It gets worse until it stops completely. I stopped loosened the gas cap, restarted and reved engine, took off and ran supper for a few miles and ,started over again. I have changed both fuel pumps, and filter, changed plugs, cleaned injectors. Any Ideas

 

I'd look at the MAFS. Does this car have a OBD box (driver's side strut tower) to read diagnostic codes?

 

Thanks for your reply.
Yes it does have the OBD Box. How do I check the MAFS

 

Any codes other than 1-1-1? See this:https://www.brickboard.com/FAQ/700-9...AMMCalibration
mafs=amm

 

Thanks for the info. I won't be able to try until Monday tied up all weeekend. I will let you know what I find out Thanks again. Larry