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2001 Dodge Ram Van 1500 Question: 2001 ram van 1500 w/318 died, cranks but no run

 

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mtims48021, Lake City, MI, April 12, 2011, 08:27
 Rookie

My 2001 w/318 started bucking and dying on way home.
Would start back up but had to feather throttle and
baby it to get back home 10 miles. Tried to start next
day, would crank normally but not start. Tried ether -
no start. Suspected ignition problem. Put OBC2 tester on
it and got one code. P0138 O2 sensor B1-S2 "Shorted
To Voltage." Replaced O2 Sensor, still no start. Put OBC2
tester back on - NO problem codes but did have 4 "Pending"
codes flashing; C - Catalyst Monitor, EV- EVAP System Monitor,
O-Oxygen Sensor Monitor and OH-Oxygen Sensor Heater
Monitor.
Does anyone have a clue as to where to check next?
Will any of the "Pending Codes" prevent it from starting?
Mike T

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  • Answer #1

    mastertech6371 April 12, 2011, 08:40
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     Master

    the heater code on the o2 will not cause a no start.
    you saw the monitors that are not set, they have nothing to do with it either.

    you could have a spark issue. you need to find if the plugs have any firing to them.

    another common issue is the cat being clogged and does not allow the motor to breather.

    i think you need a shop to do a proper diag to find the issue and give you a bid for repairs.
    basic tune up parts would be a good start. plugs, wires, cap and rotor. sometimes the rotor has a hole burned through the top. that will give you no spark.

    thanks for using repairpal.

    Roy

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    mtims48021, April 12, 2011, 09:03
     Rookie

    Thanks for the reply!
    You mentioned the cat, wouldn't it still start, but not run well or long if it was clogged?
    Will pull the dog house today for more checks on ignition system.
    Mike T

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    mastertech6371, April 12, 2011, 09:06
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     Master

    yes, do the ignition first. if you find nothing or if it has spark, we just unbolt the head pipe at the mainifolds and see if it will run. that will confirm the clogged cats.

    Roy

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    mtims48021, April 12, 2011, 09:39
     Rookie

    Thanks again Roy, Is there a preferred sequence for checking ignition components on this engine? It's been about 20 years since I taught Auto Shop! The basics are still the same, just newer Technology makes it harder to diagnose!
    Mike T

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    mastertech6371, April 12, 2011, 09:43
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     Master

    start at the plug to verify spark. if not then check the coil for output. if not, then verify voltage to the coil and the pulsating ground side to see if the computer is turning the coil on and off.

    good luck

    Roy

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