s-afc/mas problems

[Dfish1]

okay, i'm posting my problem in here cause i think i've found my problem...

so i drove my car in the morning, ran great, then in the afternoon it wouldn't rev past 2.5k or so. I pulled the mas code so replaced the mas, and replaced any boost leaks, to no avail. i finally brought it to a shop (not a tuner shop) and they said the mas signal was being lost through the s-afc. when they wired the mas directly to the ecu, it ran fine, but when they hooked it back up to the s-afc it ran bad again.

i'm really confused, apexi said it was posable the safc was bad...what do you guys think

 

[86MCSS]

Solder all your afc wires together...never use quick connectors.

 

[overdoseheroin]

Solder all your afc wires together...never use quick connectors.

who said anything about quick connectors?

 

[Dfish1]

okay, the mas signal goes to the s-afc and i modify the signal to change the a/f ratio and send it back to the ecu. the shop said the signal going in volts or whatever(don't know electronics that well) and coming out almost had no signal. i double check connections and there good. i did a sensor check with the afc and it said in-1 was at .020 V and in-2 was at .005V. thinking i need a new afc cause what else could be the problem??? WTF

 

[cfisher]

I know you've probably checked this but make sure the SAFC is on Karmen and 4cyl.

 

[Dfish1]

I know you've probably checked this but make sure the SAFC is on Karmen and 4cyl.

yep i did, i'm gonna borrow my friends s-afc tommow and see if that fixs the problem