QuestionTed,
Ok here is the problem.. 1995 Corolla DX, auto, 185K miles.. start car idles fine, revs fine. (even under hard neutral revs, no breakdowns)..now drive locally in town car drives great, interstates different story. It seems as though the car once reacing around 60+ mph and on some take offs from a stop the car "bucks"..
Here is what has been done so far:
new coil..found crack on coil near contactor for distributor/rotor button. Thought this was the problem..
new fuel filter, plugs, wires cap, rotor.
also put i put in two bottles of dry gas in case water had gotten into system..Day prior to bucking, ran car low on gas and thought I picked up some bad fuel..
also checked Fuel pump and fuel sock both looked good...what should the fuel pressure be at idle?
..runnning out of things i can check without having a diagnotic machine.
Note..I checked one of the 02 sensor..ohms reading was "0" (analog meter)..no change even ofter heating up the element..original O2 sensors
I appreciate your assistance in helping me with this problem..James
AnswerThe fuel pressure shouild be about 6 psi, the O2 sensor voltage should change, with an analog meter, which averages out the sine waveform, it should read about 2.5 volts, try replacing the O2 sensor it should show a voltage, a zero reading on a DC scale is not good.
