cutoff problems

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verona
E30 Zone Newbie
E30 Zone Newbie
Posts: 1
Joined: Sun May 21, 2006 11:00 pm

Post Mon May 22, 2006 3:56 pm

:cry: :cry: :cry: Ive got an 84 323i which was recently upgraded to a 2.7i engine. my problem is that when its idling i can rev it all the way to 7500 RPM easily but when i drive it it cuts of at 3500 RPM which im sure you would agree is sad because of all the power not being utilised. the chip has been changed as well as the trottle body. what could be the problem. Please help.
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bottlecapE30
E30 Zone Regular
E30 Zone Regular
Posts: 481
Joined: Tue Jan 11, 2005 11:00 pm
Location: Baltimore, MD USA

Post Tue May 23, 2006 2:32 am

i had a similar problem after my 2.7 converstion. it turned out to be a combination of water running on the ecu through the vent near the windsheild (i don't think this would be your problem as mine is a US spec). and the flywheel sensor on the bellhousing had a ton of grease smeared on it. im not sure if this is any help but something to check out.
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1987 2.7l e30 m20b27 supercharging
1991 3.5l e30 m30b35 it is dead so sad
1985 3.5l e23 m30b35
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