2G Runs rich when I unplug the SAFC

[ac1234]

Here is the problem. My 2g has a Apexi AFC, when is plug, the car idles really high but everything else works fine. But when I unplug the AFC, the revs goes down but the car is running rich. When i push the accelerator does like when the spark plugs are bad and does not accelerate at all. What can I do. Thanks.

 

[dalawoi]

ditch the safc and get link

 

[TSiAWD666]

Assuming the AFC is set up right when you disconnect it you're disconnected the MAF signal to the ECU, which would explain why it runs pig rich and doesn't accelerate worth a damn. The AFC usually comes with little butt connectors for disconnecting of the AFC's MAF wires and reconnection of the MAF lines directly to the ECU, but you would know that if you were the one who had installed it. You could look for that and reconnect the lines directly assuming your goal here is to remove the AFC.

 

[mtf-DSM]

Hello... I agree with the above statement... Is the AFC set up right? What injectors are you running? Any other background info on the situation would help everyone to better diagnose your issue... Any tuning logs or data from wideband, or something like that? Without knowing these little details, it would be a shot in the dark

 

[inthemidst]

He says his only problem is a high idle. Check for vacuum leaks and try adjusting the bids screw in the throttle body and let us know what you find.

 

[mtf-DSM]

Oh, my bad I got hung up on the last part where he said it ran like it had bad spark plugs when he accelerated... Boost/vacuum leak test like inthemidst said

 

[ac1234]

Assuming the AFC is set up right when you disconnect it you're disconnected the MAF signal to the ECU, which would explain why it runs pig rich and doesn't accelerate worth a damn. The AFC usually comes with little butt connectors for disconnecting of the AFC's MAF wires and reconnection of the MAF lines directly to the ECU, but you would know that if you were the one who had installed it. You could look for that and reconnect the lines directly assuming your goal here is to remove the AFC.

Let me ask you, that means that if the AFC is not set right by the moment that I unplug it, the car is going to be wrong?? And how I know the right settings?? That was in the car when I got it. From where I see it looks like the AFC has some kind of soldering to the ECU. Tomorrow Im taking a picture to make sure that im not wrong. Yes I want to remove the AFC.

 

[ac1234]

Hello... I agree with the above statement... Is the AFC set up right? What injectors are you running? Any other background info on the situation would help everyone to better diagnose your issue... Any tuning logs or data from wideband, or something like that? Without knowing these little details, it would be a shot in the dark

The car has the oem injectors. I dont have any data. Im trying to figured out somebody else mistake, i think.

 

[ac1234]

He says his only problem is a high idle. Check for vacuum leaks and try adjusting the bids screw in the throttle body and let us know what you find.

I have done everything that has to be with leaks check. I replaced a lot of parts already. I found out that the problem is with the AFC.

 

[SrKegler]

Wow, 1st post at 3:30, problem solved without any real input is 3 hrs.

 

[ac1234]

Wow, 1st post at 3:30, problem solved without any real input is 3 hrs.

What?? Problem solved?? The problem still there!!

 

[mtf-DSM]

... OK, you said that you have no air leaks... Do you have a modified (hacked) airflow meter? Check you IAC as well... That thing can unleash pure hell on things ESPECIALLY when it comes to the idle... I wish I knew more to help, but my knowledge is somewhat limited

 

[inthemidst]

I the car is 100 percent stock just zero everything out it should run fine .

 

[ac1234]

I the car is 100 percent stock just zero everything out it should run fine .

I purchased the car with a FMIC, SAFC and a crappy fuel regulator. The rest is stock. Im trying to fix this car after being sitting down for so long (9 months afghanistan deployment) This used to be my daily car.

 

[mtf-DSM]

Hey. It's just strange that the owner before you had an safc hooked up with just stock injectors But have you checked the IAC valve yet?

 

[ac1234]

Hey. It's just strange that the owner before you had an safc hooked up with just stock injectors But have you checked the IAC valve yet?

I got the problem fixed. It was a problem with the connection of the SAFC, then I adjusted the BISS and the throttle cable and the problem is fixed.

 

[mtf-DSM]

Awesome!!!

 

[dsmrafa]

Great! When is possible connect a wideband and see the air fuel ratio and get it at about 14.7 at low trotle and at about 11:1 at wot!