Chrysler Repair: No spark: 2.7L, crankshaft pulley, pulley bolt
Questioni have a 2001 sebring with the 2.7 i cheaked the cam sencer
input 5 volts when i turn the engin i get 5 volts on sencer output same for the crank sencer but still getting no spark on the pluug distrubtor i get 12 volts on the pink wire but on the green line i getting no power all fuses are good oh yes i just swaped the motor due to 1 was dead the one i put in i drove the car in to my garage before removing the motor when i removed the crank sencer i noticed the paper space was not there could this be the problem??
AnswerHi John,
The signal wire of the cam (tan/yellow) and crank (gray/black) sensors should show pulsing of the voltage between 5.0 and 0.3V as you rotate the crankshaft pulley bolt by hand with the ignition in the 'run' position. Measure between the signal wire and the black/light blue signal ground wire.
So the 5v your see is ok, but now try turning the crankshaft and watch for the pulsing to occur or not to occur at both sensor signal wires. If you aren't getting 0.3V pulses on one or both of the sensors then you will probably not get spark either. The sensors come with a paper spacer and you should have a spacer on the tip of any sensor that you install. You push in on the sensor till the tip touches of the surface that it is supposed to 'sense' and then you hold it in contact while you tighten down the mounting screw. The paper is supposed to wear away and that is why you didn't see any on the crank sensor you removed. But if you put it back in that way again you may have damaged the tip of the sensor or perhaps it is too far from the surface. Get a new spacer paper from a dealer and try it again, or replace the sensor.
I don't understand which pink wire you are speaking of.
The dark green/light green wire will only show 12V when you are cranking AND if you have signals from the cam and crank sensors. If you have signal and you have 12v on that dark/light green wire then you should have spark/fuel injection/start.
Roland
