Poor performance

[Anita]

Sirco,

Is it bucking when it up and downshifts? If it is happening then, it might be your Mode switch. Search on "mode switch" or check this thread for some info:

http://www.vehicross.info/forums/sho...ht=mode+switch

[mbeach]

I got bad gas (water infiltration) many years ago at a Circle K in El Paso.
I've also had problems with the 'oxygenated' summer gas sold in the southwest.

Could it just be bad gas?

Oh, don't waste your money on the high octane stuff. Just get your gasoline from reputable gas stations and you should be just fine.

[Maugan_VX]

also, "coughing" could be caused by a leaky Intake Manifold Gasket with a cold engine. After a couple of minutes running, the symptoms disappear.

Although I wouldn't call the symptom "bucking" its an easy problem to diagnose (not so easy to fix though)