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 Fill up, LTFTs super rich. What's up?

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Name : Aaron
Age : 46
Location : C-bus, Ohio
Joined : 2007-01-13
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PostSubject: Fill up, LTFTs super rich. What's up?   Fill up, LTFTs super rich. What's up? EmptySun Oct 14, 2007 1:16 pm

Every time I fill up with a full tank, my LTFT numbers go from near 0 to -22. This lasts for a few minutes, or until the next time I start the car. Anyone know why this happens? Good news is, things do go back to normal eventually. Thoughts?

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

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'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
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Name : Rob
Age : 41
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Fill up, LTFTs super rich. What's up? Empty
PostSubject: Re: Fill up, LTFTs super rich. What's up?   Fill up, LTFTs super rich. What's up? EmptySun Oct 14, 2007 10:42 pm

maybe has something to do with the evap/purge system pumping fumes back into your car??
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Name : Derek
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PostSubject: Re: Fill up, LTFTs super rich. What's up?   Fill up, LTFTs super rich. What's up? EmptySat Nov 03, 2007 9:49 pm

Could be the colder, denser fuel as it comes out of the ground. The liquid eventually comes up to ambient temp and functions normally.
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PostSubject: Re: Fill up, LTFTs super rich. What's up?   Fill up, LTFTs super rich. What's up? Empty

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