QuestionQUESTION: 96 Chrysler Sebring Conv, won't start, battery good, sounds like fuel pump activates. I want to test the fuel pressure. Rented a kit from AutoZone but I can't find the schrader valve. Is there one on this car? If so where. If I have fuel pressure, what else might it be? I get no codes on the check engine light. It flashes 5 pause 5. Connected an analyzer under the dash, no codes.
Help Roland, please.
Bill
ANSWER: Hi Bill,
Verify that you are getting spark on a spark plug wire (screwdriver inserted in plug cap, hold shaft of driver 1/4" from cylinder head, ask helper to crank while you check for spark to jump for a full 5 seconds of cranking over. I would believe the fuel pump is ok if it is humming for about 1-2 seconds.
One overlooked item is the exhaust gas recirculation valve. Check to make sure that when you move the stem by means of the tip of a screwdriver inserted in the slot of the stem that it closes to a dead stop via internal spring action. If sticky, squirt stem with WD-40 where it enters valve body. You will find it by following the small pipe the branches off the front manifold toward the throttle body. If it were ajar that would lean out the mixture too much to sustain an idle.
There is no schrader valve on the fuel rail. You need to have an accessory line with a built-in valve that connects between the chassis fuel line and the rail. But don't concentrate on that until we know whether you have spark and the egr is closed.
Roland
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QUESTION: Roland,
I'm puzzled. Your said the resistance between the pin 6 of the 6-pin socket and pin 1 of the 2-pin socket should be 0.6-0.8 ohms. I have 0.0 ohms. I went to the parts store and checked a reman dist and it also has 0.0 ohms. Is this correct and can I check the resistance of the coil while off the engine and if so how and what should it be? I get some oscillation at the crank sensor but only while the crank is in motion. .03V to .47V. Is this OK?
AnswerHi Bill,
I was not pointing at the primary winding measurement of 0 ohms, but rather you said the coil tower to ground read od 8 ohms (or something like that). Measuring 0.6-0.8V ohms has to be done very carefully to be sure you have the meter zeroed properly. But that latter measurement is about 2,000 times too low, and indicates that the secondary winding of the coil is shorting to ground.
It makes no difference if you are measuring it on or off the car, If you removed the cap and measured from the coil tower to ground you did it right and it should not be that low.
The sensor voltage pulising looks OK but you must have mis-read the meter setting because the pulsing is supposed to be from 0.3V to 5.0V, a factor of 10 higher but I don't believe your actual numbers, rather that you didn't note the multiplier to apply to the digital readout or some other inherent error.
Roland
