SAFC II and tach/rmp signal

ONLY for ADVANCED technical discussion about the 240sx!
mx6guy
Posts: 19
Joined: Mon Jan 03, 2005 7:01 am
Car: 95'mx-6

Post

SO i hooked up my SAFC II everything is to the correct wire on the ECU, but there is a problem

the Stock Tach and the SACF PRM are totallly off, here is about what each reads at their corresponding points

SAFC Tach 600 8501000 16001500 25002000 37002500 42003000 50003300 60003500 65003700 7000

Now the Green wire on the SACF is taped into the #2 wire on the ECU the yellow w/ red stripe. At first i though this was a problem with this wire so i taped the coil and it showed the same read out......

now my question is WTH is wrong, i know the safc is way off, i can top out 2nd gear and it will only show less than 4k rpm. I also know the tach is about 100-200rpm off but how can i wire the safc to read the same as the tach? And even hot wiring into the coil it still off at all times. any ideas??



mx6guy
Posts: 19
Joined: Mon Jan 03, 2005 7:01 am
Car: 95'mx-6

Post

ok, ive tryed the wire to the left #1, and wire #3 to the right. all of them give me the same RPM signal.....

180fan
Posts: 7799
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

Post

Ok so you didn't post what model, or year and you expect help how?

mx6guy
Posts: 19
Joined: Mon Jan 03, 2005 7:01 am
Car: 95'mx-6

Post

ooh sorry its a 92' HB ka24de, all stock

User avatar
winnipeg240sx
Posts: 2
Joined: Sat Feb 25, 2006 5:53 pm
Car: 1995 Nissan 240sx ka-t
Contact:

Post

I think I had the same problem when i didn't have the proper amount of cylinders selected. I believe 6 cyl. is the default selection. Due to this it will read RPM's wrong.


Return to “240SX Technical Forum”