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Multiple problems after partial stage 3 upgrade

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Old Apr 4, 2010 | 10:08 AM
  #1  
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schlick
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From: Hooksett New Hampshire
Default Multiple problems after partial stage 3 upgrade

Had a WCC package installed on Friday, to include intake, throttle body, thermostat, and headers. The exhaust didn't get done because the wrong one was shipped out from WCC.

Also had the brake calipers lacquered.

Have taken the car maybe 10 miles since, and about an hour ago, barely got out of my driveway before the car threw a reduced engine power warning followed by a service traction system warning, the back end started shaking pretty badly, barely made it home.

The codes that the onboard computer are throwing are as follows:
PCM P1514 TAC system MAF performance
TCS C1221 left front wheel speed sensor input is 0
TCS C1222 right front wheel speed sensor input is 0
TCS C1248 (can't find a description on this one)

Is the MAF problem possibly because the car hasn't been tuned since the partial package upgrade? I was waiting to get it dyno tuned till after the full package including exhaust was put on.

Any guidance on this would be appreciated.

Thanks,
schlick
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Old Apr 4, 2010 | 02:11 PM
  #2  
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Jnape
Burning Brakes
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From: Middle Of Kali CA
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I would put the stock TB back on until you can tune it. As far as the wheel speed sensors, check the pigtail connections at each wheel. Did they get removed for some reason?
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Old Apr 4, 2010 | 02:35 PM
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schlick
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Thanks for the reply. The wheel speed sensor codes are probably leftover from when I had it on the dyno. They may be a red herring. But the 1248 is dynamic rear proportioning disable, and anothercode that I missesd first time through is TCS C1278 is TCS temporaily inhibited by PCM. Could this be a cascade effect from the throttle body size change, and not redoing the air/fuel ratios?
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Old Apr 4, 2010 | 09:52 PM
  #4  
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Jnape
Burning Brakes
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From: Middle Of Kali CA
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Originally Posted by schlick
Thanks for the reply. The wheel speed sensor codes are probably leftover from when I had it on the dyno. They may be a red herring. But the 1248 is dynamic rear proportioning disable, and anothercode that I missesd first time through is TCS C1278 is TCS temporaily inhibited by PCM. Could this be a cascade effect from the throttle body size change, and not redoing the air/fuel ratios?
The computer is looking at the TB blade position and expects a certain MAF reading in that position. Outside those ranges will cause codes and misbehaviour.

Last edited by Jnape; Apr 4, 2010 at 09:55 PM.
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