Hey guys My car started running lean. My wideband gauge shows up to 17 some times WOT and my check engine light came on which sad running lean. What should I do to fix that problem??? I was tuned by Devo like 3 month ago and it was fine but now it started running lean and I didn't even do anything to the car.

 

ouch.....stay off the gas man until you pinpoint your issue....

bad/clogged fuel injectors/fuel pump? FPR bad? def sounds like a fueling issue....

 

check everything is still secure all bolts and what not, manifold bolts and all your hoses are clamped tight......possible fuel pump goin bad?

 

+1 on checking everything again.. b4 going WOT again.. anything fuel related check it twice..

Off topic but what is the rule of thumb when it comes to lean.. would you say 12.2:1..at WOT?

 

Is it possible to check a fuel pump???

 

well, hopefully you may still have your stocker? can toss it in real quick....i read other post where peoples walboro's go bad....maybe you have a friend will swap with you real quick.

 

how old is your WIdeband? What is the a/f @ idle and cruising?

 

Its a good idea to check your sensor as well..

 

If you have your boost gauge tapped into the FPR line check to make sure it has not popped off the regulator or the mani.

 

^^^What he said. Make sure the vaccum line on the fuel pressore regulator has not popped off. Easy fix if it has.