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Old 06-02-2000, 01:10 PM   #1
NASIOC Supporter
Member#: 191
Join Date: Aug 1999
Chapter/Region: NESIC
Location: Brooklyn
2012 J train

Post AFC is helping the 3k-4k hesitation...I guess thats good.

i have now used the afc to raise the fuel to 26% at 3k-4k rpms. there is no more hesitation but I dont know if my car feels faster. What I do notice is that my gas milage SUX. I checked my o2 sensor and it is showing .83 which is good for now. Oh well, cant have both I guess
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Old 06-02-2000, 02:05 PM   #2
HRE | giulio
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Member#: 481
Join Date: Nov 1999
Location: NY USA

this may sonud odd... but try shifting earlier. like at 3.5 or 4 krpm. I usially shift before 3.5, but you like to keep it higher. Maybe shifting earlier will tweak the ECU somehow.
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Old 06-02-2000, 09:46 PM   #3
P.K. Motorsports
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Join Date: Mar 2000
Location: USA
1999 RS


Reset your ECU with the AFC on the high settings and let the computer determine its closed-loop settings on those. This way your mileage should be OK and you'll still get the benefits of the high settings in open loop.
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Old 06-02-2000, 10:14 PM   #4
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Join Date: Jul 1999
Chapter/Region: SCIC
Location: www.themonkeystrunk.com

The reason it helps in the hesitation I would guess is that the consensus says it's caused by an overactive knock sensor. Why it's overacting in that range is unknown completely yet.
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Old 06-02-2000, 11:15 PM   #5
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Join Date: Aug 1999
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2012 J train


G, thats no fun though dont get to hear the car roar through the rpms!
PK thanks, but I was one step ahead of u...I reset the computer yesterday, so I am keeping an eye on the fuel..thanks again
Damn hesitation....I hate knock sensors!
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Old 06-03-2000, 11:16 AM   #6
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Join Date: Aug 1999
Location: Ft. Worth, Tx. US
Thumbs up

I was reading the manual when I got the car 2.5, and they said for optimal mpg shift into 2nd at 15, 3rd at 25, 4th at 40 and 5th at 45. It puts it at an average of 3k rpm. I know you don't get to hear the engine but you do get to save money for more mods. As far as stop light fun, I red line. Wow I miss my car! It's in the shop for hail damage, been w/o for two weeks now. It's been so long that I've forgotten what she looks like.

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