h22a1 issue
#1
h22a1 issue
I have a 93 boosted h22 swap in my eg. Car is having a issue that just now started. basically when i go 70% throttle at around 3500-4000 rpm the car will stop accelerating and fall on its face and the check engine light will flash once and then go away. on a lighter throttle is will go threw the whole power band. sometimes it wont do it at all even at wide open and sometimes it will go to 6000 rpms. new knock sensor, plugs wires. no codes either. any ideas or maybe something simple im overlooking? thanks.
#4
Re: h22a1 issue
#6
Re: h22a1 issue
yea that was my next plan didnt think about it before that turning the car off would clear the code. i pulled the vtec selonoid off today and cleaned it all and replace the gasket/screen filter. its doing it way less now but i havent been able to drive it much.
#7
Honda-Tech Member
Re: h22a1 issue
If you have a tunable engine management system such as Hondata, you are most likely hitting "boost cut". This will illuminate the check engine light briefly and the vehicle will seem to be non throttle responsive for a few seconds before recovering. This will NOT trigger a MIL code. Accelerating at part throttle will likely not reach this threshold, and thus the car will seem to operate normally. The fact that the average daily temperature across this country is dropping means that the air is becoming more dense and boost pressures will climb as the mercury drops. If the symptom seems to occur more often at cooler temperatures compared to when it is warm outside... like early in the morning or after dark, this is likely the issue. If your target peak boost pressures are around 10psi and you are using a stock MAP sensor, you will need to consult with your tuner and either turn off the boost cut (which I do not recommend) or replace the MAP sensor with one that reads more boost so that the boost cut can be set a few psi higher than your target boost setting... to allow for some boost variance because of air density.
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#8
Re: h22a1 issue
If you have a tunable engine management system such as Hondata, you are most likely hitting "boost cut". This will illuminate the check engine light briefly and the vehicle will seem to be non throttle responsive for a few seconds before recovering. This will NOT trigger a MIL code. Accelerating at part throttle will likely not reach this threshold, and thus the car will seem to operate normally. The fact that the average daily temperature across this country is dropping means that the air is becoming more dense and boost pressures will climb as the mercury drops. If the symptom seems to occur more often at cooler temperatures compared to when it is warm outside... like early in the morning or after dark, this is likely the issue. If your target peak boost pressures are around 10psi and you are using a stock MAP sensor, you will need to consult with your tuner and either turn off the boost cut (which I do not recommend) or replace the MAP sensor with one that reads more boost so that the boost cut can be set a few psi higher than your target boost setting... to allow for some boost variance because of air density.
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diyeealooen
Honda Civic / Del Sol (1992 - 2000)
6
10-11-2010 05:34 AM