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Old 02-22-2001, 09:57 AM   #1
KITTbri
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Member#: 2748
Join Date: Oct 2000
Location: Atlanta, Ga
Vehicle:
1992 WHT SE-Rw/stuff
2.5RS & '01 Mazda MP3

Thumbs down lean condition

Okay need some feed back. I have a 99 that as of late feels a little hitch in 2&3 at about 4k rpm. is the infamous MY99 lean upper end i hear so much about?
if so what is best way to combat this condition short of a s-afc?
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Old 02-22-2001, 10:16 AM   #2
bratmantlz
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ecu reset??? dunno
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Old 02-22-2001, 11:26 AM   #3
rjones
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No, you're not experiencing the 'normal' learn problem with the 99 if its at 4k RPM. Lean run oply happens above 5300. Anyhoo, this only hapens with aftermarket intakes-- do you ahve one of these?

It sounds more like you're experiencing the infamous knock sensor hesitation problem. Do a search and you'll see.

I had a hesitation around 3500 for a few days, but a new tank of gas seemed to clear it up *shrug* Try and ecu reset.

rj
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Old 02-22-2001, 07:08 PM   #4
Mariano
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Location: Guaynabo, Puerto Rico
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2005 LGT LTD

Have a Nice Day?

1. Reset the ECU
2. Get a Rich/Lean meter installed
3. Install an Apex'i S-AFC

M
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Old 02-23-2001, 12:48 AM   #5
KITTbri
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1992 WHT SE-Rw/stuff
2.5RS & '01 Mazda MP3

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no i have stock intake only panel filter.

it did happen after a new tank of gas though... usually buy QT, got Starvin' Marvin' this time. would octane boost help that?
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