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Old 06-10-2006, 06:54 PM   #1
cegpcola
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Member#: 97987
Join Date: Oct 2005
Chapter/Region: South East
Location: Pensacola, FL
Vehicle:
The Wagon shaped
paper weight

Default Need Help with missfires!

I just got through replacing the Transmission. Once everything got back together, the car does not want to idle well. I have pulled the CELs, and it is showing a missfire on all four cylinders. Now the car idles rough on any of the maps that I built for it, but smotthes out some on the regular ECU map. The car was running great prior to the tranny blowing, but started to runrough right after install. I have a mod list below for the motor. Let me know if you have any ideas.

Crawford S2 block
Stock ej205 heads
ACT Streetlight flywheel
Perrin Crank Pulley
FPGreen turbo
TurboXS FMIC
TurboXS Utec
Modded Pink injectors
Perrin Short Ram Intake
Removed TGV, but rod remains
ApexI AVC-R Boost controller

Everything was dialed in before the tranny blew. Please Help!
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Old 06-10-2006, 08:32 PM   #2
gpatmac
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psm

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My first guess would be flywheel, though I thought that the Streetlight wasn't supposed to cause misfire cel's. At least if it's the flywheel, the misfire's are false.
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Old 06-10-2006, 09:23 PM   #3
cegpcola
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The car was running fine before the tranny swap, so I doubt that it is the flywheel. The car acts as if it is running rich, but shows to be idling at around 18-20:1 on my maps, and around 10:1 on stock ECU. I can not understand this.
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Old 06-10-2006, 09:28 PM   #4
gpatmac
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psm

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Sorry, I made an assumption that you swapped flywheels when you swapped trans.

How are you logging? Are you seeing the 18-20 with the UTEC logging and an obdii logger to monitor your ecu?
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Old 06-10-2006, 09:40 PM   #5
cegpcola
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I use TurboXS Tuner to see where it is.
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Old 06-11-2006, 12:58 AM   #6
gpatmac
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Roger, but what is reporting the 10:1?

I'd say recalibrate your wbo2 sensor first, then if it looks like it's accurate then tune your fuel to what you want.
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Old 06-11-2006, 02:23 PM   #7
cegpcola
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The tuner shows 10:1 when it is idling on the factory ecu. When it idles on my custom map, it shows around 18-20:1. I did drive the car down the street last night, and on the ecu under driving conditions it runs leaner than 21:1. I am out of ideas.
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Old 06-11-2006, 03:54 PM   #8
gpatmac
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I guess normally, I'd say retune the map but since the malfunction is as a result of a trans swap, I don't have any idea. I don't think I'd be running it on the stock map, though. The only idea that'd be a remote chance would be that the trans swap didn't have anything to do with this. Maybe it was a coincidental thing and your MAF went out at the same time as the swap. Maybe the MAF electrical connector came apart during the course of the swap.
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Old 06-11-2006, 03:57 PM   #9
djviper
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earth the tranny and the engine and make sure they go on the battery
also how long and hard did the engine bounce off the rev limiter when the tranny blew
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Old 06-11-2006, 04:08 PM   #10
cegpcola
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I was barely in the throttle when it blew, and I got right out of it as it happened. I have my limit set at around 6800 rpm, so if it hit it at all is was not hard. I did start the car with out the axle back portion of the exhaust following the tranny swap, but it started and idled fine at first, but when I went to cut the car off it started missing. I just attributed this to the fact that the car was seeing more air than it was tuned for, and put the axle back on and, the ecu and started the car up again, but still had the bad idle.

I did pull the plugs, and noticed a large amount of carbon deposits, so I am wondering if I might have some coilpack problems. But if that where the case it should only be on one of the plugs not all four.
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Old 06-11-2006, 04:14 PM   #11
djviper
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ive had mine running with just the open down pipe i doubt you would of hurt it that way,you might have a buggered o2 sensor though, or your MAF might have given up, did you get any other codes? can you see the MAF and o2 probe voltage on your software?
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