Chrysler Repair: No Spark: 97 2.5L V-6, chrysler sebring convertible, briggs and straton


Question
i have a 1997 chrysler sebring convertible jxi 2.5 v6. i replaced the front valve cover gasket then created a skip. while checking for the skip which i think was plug wire i pulled the pcv valve out and the motor revved up then started running like a one cylinder briggs and straton. i switched car off and now it will not crank. i checked and no fire to plug wires but faint fire to distributor. i changed dist. and still no cranking. checked fire again only faint fire to dist. and also no pulse on fuel injector. so i changed crankshaft sensor. still not cranking. i am at my wits end. plz help thanks mark

Answer
Hi Mark,
Did you try for a fault code? "on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time? Then watch the odometer windoe to look for any 4-digit fault codes, or absent that, for the check engine light to begin to do a series of flashes separated by pauses? Either way give me a number or numbers of flashes and we can go from there.
You might want to check for pulsing of both the crank sensor and the cam sensor as follows:
You would put the key in the 'run' position, then turn the engine over by hand using a ratchet handle on the crankshaft pulley bolt. You would expect to see the voltage oscillate between 5 and 0.3V as you rotate the engine. If not, then that sensor is the cause of the failure.
On the distributor the wires would be tan/yellow and black/light blue on pins 3 and 1 of the 6-pin plug, while the crank sensor would be the gray/black and black/light blue on the sensor plug. You could also access them at the pcm on 33/43 and 32/43, respectively by piercing the insulation with a fine pin to which to attach the leads of the voltmeter. But check to be sure it still won't start before you check the voltages.
Roland

Roland