Thread: car running crazy rich almost all the time!!!!

Like title says.....car runs so rich to where it has slight jerks/hesitations during cruising. This just started a few days or so ago. Wideband is not registering cause its so rich during cruising and also idle for the most part. O2 is new. Once off the gas if the wideband decides to read it will cycle from around stoich to lean until I hit the gas then it will read 10 flat for a second and go back to not registering again. Need help cause my driveability blows right now. Blow thru setup

For a little while now.while cruising it would cycle from stoich to lean while cruising every now and.then but it has been doing that more and more until this point.

How's your fuel pressure? What engine management do you have? What injectors do you have? Have you checked your coolant temp sensor? There's many possibilities..

Fpr is 4bar. Subies 525, cts is month old, Jwt tuned for exact setup.

I've also noticed my maf used to read 54% at redline now and lately its been reading 64% at redline....so that's ganna be my next move

AFr is around 10.7:1-11.2:1? if so, that's normal for the JWT for that tune.

The afrs used to be better. Slightly richer then stoich at cruise and idle. But this is off the charts rich and never been like this before. It's to rich to read at all times now

Check your cooling temp sensor.

Not sure what MAF you have but I the same set-up with a Z32 MAF and I had the screen get a little dirty and it gave me some inconsistent readings. I was never a fan of blow thru either. Just my .02cent.

Just replaced a few weeks ago.

I know my maf has a crack along the bottom side so no tellin how it looks on the inside. That's my next stop