today and yesterday while driving a problem that hasn't happend in a long time resurfaced. the cars speed drops to about 10mph and it shakes/studders. and if i give it a little gas i smell the gas. it also puts out puffs of black smoke. im not sure what it could be. i was told it could be my cats/o2 sensor/fuel pump or filter.

 

does anybody know?

 

cats you have cats...LOL do you mean when you slow down to 10 mph or does the car go dwn to 10 mph ??

 

i'm guessen if you have an older cat that it could be haven problems. i have had that happen on two vehicles now and i could be somethen like that. check it out. don't like consider that gospel cause it could be in the fuel system or the ignition system. check for a loose coil wire or somethen.

 

A better description would be nice...

 

It's running stupid rich. I would say that you have an injector that is freezing up. Have them professionally cleaned.

 

what could make the pcm think its lean and act in consequence??? there are some factor to take care i think...