Rich idle - possible causes?
Thread Starter
Safety Car
Joined: Apr 2003
Posts: 3,793
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From: VA
Rich idle - possible causes?
94 LT1 A4. 63k. Stock engine.
Tried Datamaster for the first time tonight. Car is rich at idle mainly on one side. BLM 124/118 at idle.
Found another thread that suggests bad O2 sensors. Mine are only a few months old. Plugs, wires, EGR also fairly new. Opti is probably original.
In case it's relevant I think this car idles a little rough (mild burble) and is a little down on power compared to other LT1s I drove before I bought it. The lack of SOP power might just be the 2.59 rear however.
What other things besides O2 sensor should I look at?
TIA.
Tried Datamaster for the first time tonight. Car is rich at idle mainly on one side. BLM 124/118 at idle.
Found another thread that suggests bad O2 sensors. Mine are only a few months old. Plugs, wires, EGR also fairly new. Opti is probably original.
In case it's relevant I think this car idles a little rough (mild burble) and is a little down on power compared to other LT1s I drove before I bought it. The lack of SOP power might just be the 2.59 rear however.
What other things besides O2 sensor should I look at?
TIA.
