I have bought megasquirt V3.0 partial kit, assembled it using parts that I have bought in a local shop, installed MS3 daughterboard and using it to run 13b-rew on my mazda rx-7. Everything works fine except one thing - when I connect idle valve my RPM rise to 2400-2500 and I can't decrease it. Board modification was made using manual, I have installed TIP127 (can't find TIP122, but as I can see it's full analog), removed D8, Q4, Q20 and other steps from manual. Checked all twice. I also have a microsquirt, when I run engine using it, I can set RPM from 600 to 2500. I also have megasquirt 1 proccesor, I tried to install it, RPM was 2500 too... Tunerstudio settings doesn't affect anything. Checked for short circuit - there is 0-1 Ohm
relative to the ground on PIN3 of TIP127 and infinity Ohm relative to the ground on PIN1-2. As I can see - problem may be in proccesor (but not in 2 proccesors at the same time) or in TIP127, am I right?
Idle valve always fully open
Moderators: jsmcortina, muythaibxr
Re: Idle valve always fully open
TIP 122 is NPN. TIP 127 PNP.
Rover SD1 3.5 EFI
MS2 V3
EDIS
Tech Edge O2
London UK.
MS2 V3
EDIS
Tech Edge O2
London UK.
Re: Idle valve always fully open
lol.... i'm an idiot ) will change to tip122 thank you
Re: Idle valve always fully open
can't find tip122 in local shops so I have installed tip102, working fine