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ltft's maxed after getting car back from shop rear end work why?? MIKE L please help!

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Old 10-17-2009, 11:19 PM
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Default ltft's maxed after getting car back from shop rear end work why?? MIKE L please help!

I just got the car back from getting my rear end gears done. My ltft's werent perfect but they where ok. Now they are maxed out lean 25% for some reason why? I mean it's like all of a sudden for some odd reason.

Last edited by onebadazzls1ta; 10-18-2009 at 07:14 PM. Reason: new coments
Old 10-18-2009, 12:43 AM
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Like O2s went out, or maybe the ENG SEN fuse that runs them
and the MAF too. See any codes like that?
Old 10-18-2009, 06:22 AM
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The trims change thought has I'm accelerating etc etc, and I dont have any ses light.
Old 10-18-2009, 07:07 PM
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My 02 milivolts are switching fine and my trims go up and down depending upon how fast I'm going I just dont get it
Old 10-18-2009, 07:13 PM
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Someone suggested that the 02's just went bad all of a sudden but they have under 10,000 miles on them and when I watch the millivolts on my aeroforce they switch fine. I'm stratching my head on this one. Like in my primary post just all of a sudden BAM after getting the car back from getting my gears replaced for the 5th time :O/
Old 10-19-2009, 08:06 AM
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Is it possible your map values changed with the different load from the gears?

So would that affect the VE table?

Not sure but seems like it would need a little tweaking after a gear change.

Good luck

Brad
Old 10-19-2009, 10:14 AM
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Any chance someone flashed your car after the gear install?
Old 10-19-2009, 10:23 AM
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Any time you have work done, you have to suspect
an "oops". I figured maybe electrical.

Might look around the work-area for other things
like an EVAP line that's been "modified" into a vacuum
leak etc.
Old 10-20-2009, 09:40 AM
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Looks like either the o2s are bad, or the MAF is out of whack. Unplug/diable your MAF if you can and see what the LTFTs are then (you will be running SD mode, but if you say your VE table was good then it should revert back to that)
Old 10-22-2009, 07:47 AM
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I dont have hp tuners and I dont think my d/s tuner would be able to read those parameters
Old 10-23-2009, 09:43 AM
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yes, you can view the long term fuel trims with the predator...
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Last edited by 06MonteSS; 11-12-2009 at 07:49 AM.
Old 10-23-2009, 12:56 PM
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Originally Posted by Mike@Diablosport
Any chance someone flashed your car after the gear install?
I would guess you are right Mike. They changed his gears so the PCM (ECM?) had to be flashed to correct his speedometer.




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