Help Diagnose Please
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From: Glen Carbon, IL
Help Diagnose Please P0106 MAP Performance gets thrown only idling after cold start. I clear the code and after warmed up for awhile, the car will run lean. This is the same tune I've had for a few years and never had any problems. I pulled the intake and replaced the MAP seal, but still have the same issue. I think the MAP sensor is on the fritz. Share your experienced opinions please.
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From: Glen Carbon, IL
I replaced the MAP sensor and it still threw P0106, but I think I figured it out. The O ring on the vacuum port fitting on the back of the intake was bad. I took it apart and instead of replacing the O ring, I used RTV to seal it back up. I'll report my conclusion when I get it back together tomorrow after the RTV cures over night. This might be what causes the mysterious P0106. Everytime Ipull the intake, I want to put my ported heads on. If anyone else has had the same issue please post your findings.
TECH Resident
Joined: Aug 2004
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From: Portland Oregon
My Ls6 intake had a real loose fitting back there, I did the same thing, just covered that area with silicone. I didn't have codes, just noticed that the MAP was loose. If you replaced the sensor, you should be good, Is the connector and wiring OK?
Thread Starter
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From: Glen Carbon, IL
I resealed the back of the intake and reworked the PCV system and added a catch can. Still throws P0106 but doesn't run as lean as it did before. I'm going to try a new MAF. I haven't had the chance to log and see if it is reading off. It has had a lot of nitrous through it (previously ran a dry kit). I'll be happy when I get this figured out.
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From: Glen Carbon, IL
Ok, it's fixed. I put a brand new MAF on it. My WB was reading lean still so I borrowed a friends and everything was fine. The ground for my WB wasn't up to the task so I cleaned it and it's working properly again. I'm taking it to the track tomorrow to see how she runs.
