Thread: E36 320 Runs badly When Cold
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Old 05-16-2007, 09:57 AM   #6
Dudesky

Name: Dudesky
Title: Run Far
Status: Offline
Join Date: Apr 2005
Location: Jersey City, NJ
Rate My Car: 106 / 340
Your Ride: E39 530iA
The O2 sensor has a heater circuit for quick starts, and is not reliant on the exhaust gases getting hot. If you suspect the heater circuit is not working properly, then try replacing the O2 sensor heater relay.
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