for the past week or so my CEL (running lean bank 1/bank 2) has been comin on. everytime I clear it it will stay away till I let it sit long enough to completely cool down (overnight usually). If I clear it and then go drive the truck it will not pop up. About a mile down the road the next morning it will throw the code again.

For reference. I just replaced plugs/wires recently and I ran Seafoam through it about 2 weeks ago. 02 sensors have never been replaced.

 

this happen to someone else after seafoam... i bet it messed up something with your o2 sensors with all the built up carbon running over them, probably need to be replaced....

 

it seems like the most logical answer. I'll probably switch em out next pay period.

 

i have a ?

if you erase or clear a code and prevent the cel from coming on, does that mean you fixed the problem or is that just to put out the light?

 

If you clear the light, without fixing the problem, then all you have done is stopped the light from coming on. The problem is still there.