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Old 02-05-2009, 10:47 PM
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Default P0106, p0121, p0336

Im trying to tune a 02 Z28 A4 with unknown cam specs and just lid, LT's, duals, and stall. I put the car in OL SD and while driving it, the car sputters over 3k rpm. It threw some codes up...
P0106 - Manifold Absolute Pressure (MAP) System Performance
P0121 - TP Sensor Circuit Insufficient Activity
P0336 - Crankshaft Position (CKP) Sensor A Performance

Any help? I checked the "eng sen" fuse and it was good.

Thanks in advance
Old 02-05-2009, 10:53 PM
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What are you tuning with? Post the log.
Old 02-05-2009, 11:00 PM
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HPTuners Pro...
Attached Files
File Type: hpl
JavierSDlog3.hpl (319.1 KB, 122 views)
File Type: hpt
JavierZ28SDtune1.hpt (458.7 KB, 133 views)
Old 02-06-2009, 10:19 AM
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Im new at tuning by the way
Old 02-06-2009, 11:46 AM
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You've got some weird RPM spikes, and other little things like that, that just don't look quite right in the log. Are the sensors good? Does it throw those codes all the time?

It seems to be very rich for the most part, though that could likely be a spark issue. If you're saying that it sputters. However, there is a small group of cells in the AFR error histogram that are pretty close though. Is that something that you've already tuned? If you got it that close I would just continue doing that and it should work itself out.
Old 02-06-2009, 12:08 PM
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the codes stay on and the rpm gauge jumps and then dies but the car is running. It idles fine but anything above 3k and it sputters and i saw some KR too. I need to smooth the table out some as well but i dont think thats it.

Edit: the group in the low rpm mid kpa is the idle and area that I already tuned somewhat.

Last edited by Dirty 30; 02-06-2009 at 02:48 PM.
Old 02-06-2009, 02:51 PM
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I checked the sensor and wiring but it all looks good. I checked all grounds and battery cables. The + side battery cables are new and ground are good. I went ahead and put a washer on the mounting tab to see if that will help...gonna log right now.
Old 02-06-2009, 03:04 PM
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Originally Posted by Dirty 30
the codes stay on and the rpm gauge jumps and then dies but the car is running. It idles fine but anything above 3k and it sputters and i saw some KR too. I need to smooth the table out some as well but i dont think thats it.

Edit: the group in the low rpm mid kpa is the idle and area that I already tuned somewhat.
The area that you tuned looks pretty clean, just work on the rest and smooth the VE table out, right now it looks like ****. Define what you mean by sputters? Maybe try checking plugs and wires

I wouldn't worry about that little bit of KR at part throttle, just looks like a freak occurrence.

You're showing TCC lockup at 45mph in 4th in the tune, which might be a little bit low for a cammed car, but it doesn't seem to be happening all the time anyway? Probably from the crank sensor code.

Last edited by JonCR96Z; 02-06-2009 at 03:54 PM.
Old 02-06-2009, 03:06 PM
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I wasnt sure if the trans tune was good, i kinda went by some peoples suggestions, i suck at life.
Old 02-06-2009, 03:41 PM
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It's fine otherwise, it just might lug a little bit when it locks up. Mine is set at 50mph with the stock cam.
Old 02-06-2009, 03:44 PM
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Originally Posted by JonCR96Z
The area that you tuned looks pretty clean, just work on the rest and smooth the VE table out, right now it looks like ****. Define what you mean by sputters? Maybe try checking plugs and wires
Its like the engine starts to misfire really bad and the RPM needle just jumps to 6-7k even tho im only around 3-4k. When it jumps it just drops all the way to 0. I checked everything from plugs to coil packs and all the connections that go to them. Possibly a bad Crank sensor? Its weird cause anything between idle and 3k rpm and the car runs normal. If i try to get on it it acts up.

by the way, thanks for helping me thru this
Old 02-06-2009, 03:54 PM
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Bad sensor or a short or something?

http://gearchatter.com/viewtopic9361...0e21f331a8b1bb
Old 02-06-2009, 04:04 PM
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im going to replace it to see if that is the fix...
Old 02-06-2009, 04:39 PM
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i replaced the sensor, now the car wont start
Old 02-06-2009, 05:32 PM
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ok replaced with another sensor again and now it turns on but still sputtering



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