Need Help! Bud's car broke

[TheV6Bird]

My friend Chris has a 95 Ford Taurus w/ 3.0 V6, automatic. He is having some problems. He said his cat is messed up, making a rattling sound.

Well tonight, he car took a poo :( He can only go ~30 MPH when he floored it, and his SES light came on and off during the ride.

I am guessing it's a misfire that caused the cat to get messed up (his exhaust smells terrible), but can anyone give some suggestions? Thanks [img]smile.gif[/img]

[pvtschultz]

Replace the Cat...sounds pretty simple from there.

[TheV6Bird]

He will have to replace the cat, no doubt. But do you think that the symptoms add up to a misfire that is causing the cat to get ****ed up? The car has ~50K on it.

[Doug]

Please post a response if you get this car diagnosed. I had the exact same thing happen a year ago, replaced the cat and now I am right back to square one with cat rattling in muffler. I get laid-off on Friday so I'll be trying to diagnose the car next week. Maybe if you find the problem it will be same as mine or vice versa.

[Doug]

Oh I should add I replaced all my plugs and wires and didn't have any misfires causing my problem.

Mine is caused by the engine running too rich (possibly too lean although I doubt it). I replaced my oxygen sensors and had the timing checked so I'm not sure what else will cause the car to run rich. I hope to find out soon because I really don't want to replace my cat three times.