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Thread: Converter unlocking randomly???
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10-19-2014, 04:05 AM #1
- Join Date
- Sep 2005
- Location
- NW Indiana
- Age
- 59
- Posts
- 35
Pewter- 00 NHRA Trans Am
Converter unlocking randomly???
Yesterday on the highway at around 70mph my converter unlocked for no reason, then after a minute or so locked up again now it does this randomly while driving at any speed? I did try the brake pedal thing and the converter did unlock then lock as it should so that's probably not the problem...and no ses light either. I do have HP Tuners in case there's anything I can check/log with it? I did delete torque management last week but I don't know if that has anything to do with it or not? Any suggestions of what I can try?
2000 NHRA Edition T/A Pewter
A4 3.23 Midwest 3200, Lid, MAF Ends, Ram Air Kit
NX wet Kit - Best 60ft:1.67
1/8th:7.48@94.34n20
1/4:11.67@116.58n20
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10-19-2014, 04:52 AM #2
Was it something you could feel, or are you just seeing it on the screen as you scan with HP Tuners?
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10-19-2014, 05:33 AM #3
- Join Date
- Sep 2005
- Location
- NW Indiana
- Age
- 59
- Posts
- 35
Pewter- 00 NHRA Trans Am
I can feel it and definitely notice the rpm change, I haven't done any scanning yet as I'm out of town with the car and the tuner is home Hopefully this isn't serious and I make it home with no problem.
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10-19-2014, 06:40 AM #4
- Join Date
- Aug 1999
- Location
- Arizona
- Posts
- 51,377
Black- 383 Procharged & N20 Vert
Check for misfires, that can cause your converter to unlock.
Black 1999 Blown Convertible A4
Forged 383 | ATI D-1SC
NX MAF Kit | 222/226 .585 115
AS Stage II 6.0L FI Heads
Moser 9" | 3.70 | Wavetrac | 35 Spline | Vigilante 3600
548.0 RWHP - 563.8 RWTQ - 10# - D1
666.0 RWHP - 734.2 RWTQ - 125 Shot - P1
Black 2009 Escalade Hybrid 4WD
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10-19-2014, 12:52 PM #5
- Join Date
- Sep 2005
- Location
- NW Indiana
- Age
- 59
- Posts
- 35
Pewter- 00 NHRA Trans Am
Really? That's crazy sounding but I do remembering reading something like this before. I'll be back home tomorrow and will try logging some runs and see what it does. Thanks
Well all the way home it was fine. Only thing I did was fill it up with gas, would bad gas cause misfires that maybe caused this to happen?Last edited by Dano 00TA; 10-20-2014 at 08:59 AM.
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10-20-2014, 05:50 PM #6
Misfires can be related to the ignition system or fueling. A lot of times on our cars a lean condition will result in a misfire - but you generally will see a code set that also trips the SES light.
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10-20-2014, 06:03 PM #7
2nd pajeff02, I had this issue many years ago, had to adjust the misfire tables.
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10-20-2014, 06:18 PM #8
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