HELP PS9 1 wire vtec
#1
HELP PS9 1 wire vtec
i have a ps9 ecu running TE i have enabled vtec, but the problem is the pin a8 is always at 11.8V until i reach my vtec rpm it jumps to 13.9V i was told i had to install a pull-down resistor to get the voltage down to 0V and then it would work properly (0V-13.9V) is this right and how do i do this...
thanks, shawn
thanks, shawn
#3
Re:HELP PS9 1 wire vtec
I'm not sure...I searched quickly but couldnt find anything.
I did see one guy that the voltage was reading ~2.5v before and ~12v after the VTEC and he made no mention of a pull down resistor.
All you can do is try and see and report back. Part of the development process.
I did see one guy that the voltage was reading ~2.5v before and ~12v after the VTEC and he made no mention of a pull down resistor.
All you can do is try and see and report back. Part of the development process.
#4
Re:HELP PS9 1 wire vtec
ok, so i installed a resistor im not sure if its correct, but this is how i installed it.
G=ground, 10k=resistor, A8=A8, vtec=vtec solenoid
G-------10k---------|
|
A8------------------|-----------------vtec
this got the voltage from 11.8V-13.9V to 6.5V-13.9V i have yet to test with it actually plugged into the vtec solenoid cause i wanna try and get the voltage down more ill test it out and tell you guys how it goes.
G=ground, 10k=resistor, A8=A8, vtec=vtec solenoid
G-------10k---------|
|
A8------------------|-----------------vtec
this got the voltage from 11.8V-13.9V to 6.5V-13.9V i have yet to test with it actually plugged into the vtec solenoid cause i wanna try and get the voltage down more ill test it out and tell you guys how it goes.
#7
Re:HELP PS9 1 wire vtec
Originally Posted by stolle
ok, so i installed a resistor im not sure if its correct, but this is how i installed it.
G=ground, 10k=resistor, A8=A8, vtec=vtec solenoid
G-------10k---------|
|
A8------------------|-----------------vtec
this got the voltage from 11.8V-13.9V to 6.5V-13.9V i have yet to test with it actually plugged into the vtec solenoid cause i wanna try and get the voltage down more ill test it out and tell you guys how it goes.
G=ground, 10k=resistor, A8=A8, vtec=vtec solenoid
G-------10k---------|
|
A8------------------|-----------------vtec
this got the voltage from 11.8V-13.9V to 6.5V-13.9V i have yet to test with it actually plugged into the vtec solenoid cause i wanna try and get the voltage down more ill test it out and tell you guys how it goes.
Your VTEC point might be off though from what you set it at so you will have to play and see if what you set it at = what actually happens.
BTW, could you send me your BIN file as it is? I'd like to take a look at it if I could
chrisharris@-------------
#8
Re:HELP PS9 1 wire vtec
this works, adding the resistor brought the voltage down to 6.5V as soon as i plugged the wire into the vtec solenoid voltage dropped to 0 and back up to 13.9V when i hit my vtec engagement rpm...
things i did to accomplish this:
acquired PS9 ecu from junkyard $10.00
28 pin socket radio shack $2.49
10K resistor free found in my dads radio
willem eprom burner $?.??
coralife uv lamp AF913 $35.00 (for erasing eproms)
27C256 eproms $4.00/chip 4 chips
endless hours reading forums and searching for usefull info
Turbo Edit v2.0.11
BasemapHelper.xls, stable.bin, stockpm7.bin from xenocrons website
if neone else has ne questions just ask i will try to answere or direct you to were you can find some answeres
things i did to accomplish this:
acquired PS9 ecu from junkyard $10.00
28 pin socket radio shack $2.49
10K resistor free found in my dads radio
willem eprom burner $?.??
coralife uv lamp AF913 $35.00 (for erasing eproms)
27C256 eproms $4.00/chip 4 chips
endless hours reading forums and searching for usefull info
Turbo Edit v2.0.11
BasemapHelper.xls, stable.bin, stockpm7.bin from xenocrons website
if neone else has ne questions just ask i will try to answere or direct you to were you can find some answeres
#10
Re:HELP PS9 1 wire vtec
i hope i did help a lot of people cause this was agrevating trying figure this out thanks to Tinker_Tim over at pgmfi.org for telling me about the pull-down resistor this stuff is F'n sweet...
xenocron i sent you my bin file...
xenocron i sent you my bin file...