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99 plymouth breeze turns over, will not start, have ...
Sent to Car Experts February 13 10:14 AM

99 plymouth breeze turns over, will not start, have replaced fuel pump. has intermittent spark-possibilities?

Optional Information:
1999 breeze 2.4L

Already Tried:
replaced fuel pump

Customer (name blocked for privacy)
Status:  Closed   Value: $10
Answer
February 13 10:40 AM (26 minutes and 36 seconds later)
         
REPLIEDCheck Mark

if the engine cranks good then you should check the Primary coil resistance coil.

  1. Unplug the electrical connector from the ignition coil pack.

  2. Measure the primary resistance of each coil. At the coil, connect an ohmmeter between the B+ pin and the pin corresponding to the cylinders in question.

  3. The resistance on the primary side of each coil should be 0.45-0.65 ohms. Replace the coil if not within this range.

see the picture below

  1. Disconnect the spark plug wires from the secondary towers of the ignition coil.

  2. Use an ohmmeter to measure the secondary resistance of the coil between towers 1 and 4, then between towers 2 and 3.

The secondary resistance should be 11,000-14,000 ohms. If resistance is not within range, the coil must be replaced.

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32roadster -- Automotive Mechanic -- 89% Positive Feedback on 43 Car Accepts
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Reply
February 13 10:46 AM (5 minutes and 21 seconds later)
         
Reply to Miguel's Post: and what if resistance is good?
Customer (name blocked for privacy)
Answer
February 13 10:55 AM (9 minutes and 10 seconds later)
         
ACCEPTEDCheck Mark

If the resistance is good then you I would suspect either the camshaft sensor or the crankshaft sensor. You will need an oscilloscope to check both of them though. And if both of those turn out fine then you would have to check the ignition switch.

question:

why did you change the fuel pump?

if your still in doubt that not enough fuel is reaching the combustion chambers then simply crank the car again and while it cranks press the gas pedal a couple of times. After that check the spark plugs and smell the tip of each one. They should have a fuel type smell. If they dont then you would have to check the fuel pressure.



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