Re: bad cat or what?
Clogged fuel filter
Low pressure at the fuel rail.
Change in octane at fill up.
Check Oil, and coolant levels. If you are losing coolant or oil, you could be clogging the cat if it is being sucked in to the combustion chamber.
Check Vacuums. Leaks can cause a change in power, due to changes in fuel mixture, etc..
A few things I've done recently to solve my problem but haven't!
Is/are there things you've done recently to the vehicle that could have caused the change?
What exactly is the smell? Rotton Eggs? Hot / Burning Coolant?
Last edited by four2x4; 03-26-2011 at 09:39 AM.