So the VAFCII isn't really working as much when it's cold and only kicks in when the engine is at normal operating temperature ?Quote:
Originally Posted by 90LAN
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So the VAFCII isn't really working as much when it's cold and only kicks in when the engine is at normal operating temperature ?Quote:
Originally Posted by 90LAN
vafc does nothing but intercept the signal and trick the ecu into triggering vtec at a higher or lower point
vtec won't activate when the engine is cold period
So that means removing the VAFC will do nothing then ?
I've never hit vtec when engine is cold, im not dumb enough to even try that lol.
shouldn't do anything really
with a hesitation i'd be looking at fuel/spark related stuff
maybe a worn dizzy rotor or something
If it's happening when it's warm then x2 for a dizzy component.
First of all; apologies for thread hijacking.
I have a similar problem; there seems to be some hesitation along with noise
recently particularly around the 3,000-5000rpm range when half throttle
or greater is applied. If i was to apply full throttle and it works it way up
to redline, the noise disappears.
The noise still remains but the hesitation seems to have slightly disappeared.
Also vtec did not engage 2 days ago for about 10 minutes and even when
it would engage afterwards, it wasn't pulling as hard as it usually does.
The noise is definitely coming from the engine bay and sounds like metal rattling.
Any ideas?
^^ Exhaust heat shield might be loose?
I'll be removing the VAFC on the weekend.
Will let you guys know how I go.
How would I go about checking the dizzy without putting a different one on ?
I forgot to add that the car is running really rich, whenever I rev the car in the garage the garage door has a wet black stain on it, I'm assuming this could be a shitty tune ? It was tuned at TODA and made 105KW, I don't remember the date on the dyno print out though.
did the settings change by accident?
Mine's hesitating at the moment also but i think mine is due to different ECU
that's something to check up onQuote:
Originally Posted by 02gzm
but does that really explain the engine hesitation?
it feels like rpm is rising slowly and power isn't. once it has
bypassed that rev range, things seem normal. i've noticed a
slight drop in engine oil level but this might also have been due
to redlining alot to make sure vtec was working properly,
consistently and bringing the power that it usually does.
dude. Car should never run that rich. Try and swap with another compatible ECU and test already lol. Clearly the car is running like shit.
Getting home by 7pm every day doesn't help :(
Gonna remove the VAFC saturday morning and see how it goes, if still running rich can I come over on the weekend ben ? For a quick swap over to see how that goes ? :D
Thanks,
Aytac