PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

P0101 code after 402 swap

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Old Feb 18, 2006 | 04:34 PM
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Default P0101 code after 402 swap

Car is running extrememly rich, like 10.8 at idle and around 12 if I hold it at 2K. I checked all vacuum connections, cleaned the MAF. Fuel pressure is very high as well. Using stock injectors for now and have a base tune in the PCM already. Took the filter out of the VaraRam just by chance but no change. Any ideas?
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Old Feb 18, 2006 | 05:28 PM
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how was it tuned? with a wideband? who did it?
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Old Feb 18, 2006 | 05:42 PM
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Just a base tune that was used before from MTI. Will be going to MTI to run through the scanner while running. I'm sure we'll track it down then but was hoping to get some ideas before Monday.
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Old Feb 18, 2006 | 05:43 PM
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As far as "how", I just brought my PCM over there while I was doing the swap.
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Old Feb 18, 2006 | 05:49 PM
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well p0101 code is a code for maf performance, if the maf is bad that coudl cause trouble.
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Old Feb 18, 2006 | 08:41 PM
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It worked before I did the swap. We'll see...
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Old Feb 19, 2006 | 04:41 PM
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is it a stock maf
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Old Feb 19, 2006 | 06:52 PM
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Originally Posted by 98Z28CobraKiller
is it a stock maf
Yes, on a 02 C5
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Old Feb 19, 2006 | 07:16 PM
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got a buddy you can swtich MAFs with to see if the prbolem follows? or you cna clean yours off with electric parts cleaner
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Old Feb 20, 2006 | 11:46 AM
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I am running the same code after my heads and cam job, my maf is descreened and new housing for high flow cfm and I am thinking of trading it for a stock MAF with the screen to see what happens with my code p0101.
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Old Feb 20, 2006 | 11:48 AM
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Broken MAP sensor. Car is running great now!!!
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Old Feb 20, 2006 | 12:27 PM
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haha nice
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