ROUGH IDLE
01-03-2004, 04:45 PM
#1
Team Owner
Thread Starter
Member Since: Dec 2003
Location: L.A river under the Los Feliz Bridge
Posts: 88,774
Received 700 Likes
on
210 Posts
St. Jude Donor '14-'15-'17
ROUGH IDLE
When my 90 warms up and the computer goes to closed loop I get a rough idle? No codes present? Could that be a WEAK knock sensor?
01-04-2004, 07:19 PM
#4
Instructor
Member Since: Nov 2002
Location: ELLICOTT CITY MD
Posts: 136
Likes: 0
Received 0 Likes
on
0 Posts
Re: ROUGH IDLE (anjdog2003)
CHECK TO MAKE SURE THAT THE O2 SENSOR IS SWITCHING. HOLD THE RPM TO ABOUT 2K AND WATCH THE O2 READING. IT SHOULD PASS .450 VOLTS UP AND DOWN SEVERAL TIMES PER MINUTE(@20). O2 SENSORS DO NOT HAVE ANY EFFECT ON THE ENGINE UNTILL THE ENGINE GOES INTO CLOSED LOOP.