KARMAN on SAFC Only Reads 3hz max & Car Wont Run Correctly..Need Help ASAP

[ShadeTreeDSM]

KARMAN on SAFC Only Reads 3hz max & Car Wont Run Correctly.

Ive tried 3 different MAF's and the reading on the SAFC doesnt change at all.. 3hz the whole time the car is on..the car wont go past 10 mph...

what could it be ?

 

[RoasT BeeF]

Which maf are you using? When did this start happening?

 

[BISHILVR]

Could be a bad ecu. Is your turbo ok??? it could be a junk turbo if its totalled.

 

[Froyd79]

Did you just wire in a 2g mas or anything or was it sudden? I know I looked at the diagram backwards the first time . Also pull the plug if its 1gMAF and make sure none of the pins were bent down and not seeing contact. Had that happen too looks hooked up but no good!

 

[ShadeTreeDSM]

Which maf are you using? When did this start happening?

im using a 2g MAF and i started like last week...my car was running fine with it before...just happend out of nowhere...i think it might be my wiring ..duno though but ill re-wire it 2morrow and see what happens

 

[ShadeTreeDSM]

Could be a bad ecu. Is your turbo ok??? it could be a junk turbo if its totalled.

my turbo is fine..its brand new..not even 10 mins on it

 

[ShadeTreeDSM]

Did you just wire in a 2g mas or anything or was it sudden? I know I looked at the diagram backwards the first time . Also pull the plug if its 1gMAF and make sure none of the pins were bent down and not seeing contact. Had that happen too looks hooked up but no good!

ill check the pins 2morrow and let you know whats up ..thanks !

 

[chrisfullwood]

My car is doing the same thing, and ive had the SAFC2 wired in for almost 2 years, replaced the MAS, and no change, did anyone figure out an answer to this?

 

[Demon33]

im using a 2g MAF and i started like last week...my car was running fine with it before...just happend out of nowhere...i think it might be my wiring ..duno though but ill re-wire it 2morrow and see what happens

When you installed the SAFC did you use 'vampire-style' wire taps or did you solder the wires together? If you used the vampire clips they can sometimes be questionable. The same can be said for cold solder joints too, but if soldered properly, you should never have a problem with that joint.

I would start looking over your wiring for a loose wire, a bad connection or a bad ground point. Check these at the ECU wire harness as well as the 1G-2G plug/adapter at the MAS. I've been running a 2G MAS and SAFC2 in my '90 GSX for awhile now and I have zero problems with this setup.

Good luck.