Question about 2003 Dodge Neon
03 neon 2.ol mt stopped running no code , no spark constant voltage to all three wires to coil 1&.2 primary have no pulse changed crank ,cam sensors and coil still wont start and no spark .Changed pcm started ran for about 10 minutes and died kicked out dtc p0038 and 0351 replaced up stream o2 manuel code description states 0038 downstream 02 has short unplugged downstream and code cleared so that needs to be done but all three coil wire have constant voltage Shouldn't the primarys pulse for spark.? Why no spark
Posted by Anonymous on
There is voltage on all three wires because there is no ground, check with engine cranking. The two wires that go to computer are grounds for coils. You could probably use a noid lite to check for pulse, engine cranking. That should be safe, between primary voltage and one of the grounds. There several ways to visually check for a pulse. If your digital multimeter has a min/max setting, that should work. You could use an l.e.d. but you would have to use resistor.
You changed computer, was it new?
Posted on May 15, 2017
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Posted on Jan 02, 2017
SOURCE: died while driving
while engine is running grab the wire harness that leads into the distributor housing with a pair of needle nose pliers and wiggle the wires!!
if the engine stumbles or stalls that is your prob!!!
go to parts store and get a magnetic pickup assembly!!
i think they call it something else but its the same concept, just different because it's a dodge thing!!!
Posted on Jun 18, 2009
A test light connected across the coil primary leads should flash on + off when engine cranks(coil sparks when 12v turned OFF due to collapse of magnetic field).If you get pulsed 12 volts,and no spark from the coil,the coil is bad.If you don't get the pulsed 12 volts,trace back to find out why(the PCM turns the coil ground on and off,12 volts comes from switched IGN source)
Posted on Jan 07, 2012
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