running rich all of a sudden

[gentek10]

Just recently I noticed a stronger fuel smell coming from exhaust and my o2 count has gone way up even in idle at park and in cruising. At times its sits at 800 and even reaches 900s at times... no recent changes have been done since or before the change. Anything on how to hunt this problem down will be great..

 

[gentek10]

Here are my scan tool numbers
02. 835
Af 04
L8 31
Bat 13-14
Int 128
Bl 122
Mph00
Clt 164
Ats 74
Rpm 750-830
Tps. 42
Iac 12
Cc 225
Mal 00

 

[ds4545]

You may have an injector stuck open.

 

[turboclam]

Check the fuel injector harness for fraying. Typically it's the driver's side by the EGR valve. Weak spark? Bad O2 or mass air?

 

[gentek10]

@ ds4545 is there a way to test the injectors to see if that's the case?? @ turbo clam the o2 sensor was changed with a denso sensor about 4 to 6 months ago along with the maf due to cracking it bcuz I clamped it to tight but replaced it with a kinda old dirty one but I cleaned it with proper cleaner and it ran fine after being installed ..but ill try to get a known working unit and see if that helps...

 

[SCOOBY DOO]

Stock MAF? AF looks a tad low.

 

[gentek10]

Yes sir stock maf. I have a friend who recently upgraded to the 3.5 maf so ill ask him to loan me his stock maf and see if that helps...