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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,082
Garage
Re-install the O2 sensor and check your readings. The Lambda system cannot be simply unplugged as the frequency valve will have no reference point. Your idle AFR should be rock steady if everything is working properly and you have no vac leaks. Even tiny leaks can cause the idle AFR to fluctuate.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-30-2013, 12:44 PM
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