1, The oxygen (O2) sensor. It might be damaged or not working as it should.
2, The temperature sensor for the engine coolant. It might be damaged or not working as it should.
3, Check for problems or damage on your exhaust manifold, catalytic converter or your exhaust pipe.
4, The ignition (spark) timing might be wrong.
Any of the above items should be checked. But your best bet is to check the the oxygen sensors or your catalytic converter first. They might need to be replaced.
Saturday, January 5th, 2008 AT 12:08 PM