1997 Mazda 626 2.5 litre 145 K miles
Car starts ok, idles somewhat ok, check engine lights erratic display. The only code that comes up is random misfire.
If you are in park brake on idling and accelerate slowly
you can get the engine to rev all the way up to 5k plus
if you step on the throttle as if to take off from a stop or accelerate as if in passing. The engine will choke and nearly, but not quite, die.
If you actually attempt to drive the car these symptoms are magnified. Ie you can not safely drive the car.
In disconnecting the battery and attempting to get and failure codes. Again only random misfire.
The spark plugs and spark plug leads were replaced with no effect.
In contacting a Mazda service department. They are baffled.
Any help appreciated.
Tuesday, August 7th, 2007 AT 3:28 PM