96 Dodge Neon - No Spark, No Start
Grand Champion
Joined: Jan 2007
Posts: 5,584
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From: Lima, Ohio
Guys, I had this exact same problem... Over two years ago. And guess what? The car is still sitting in my driveway with no spark...
The scenario is exactly the same as the OP. I did a head gasket, timing belt, and water pump. Ran great for several starts, when suddenly it shut of without warning. No codes, timing is dead on (reset thinking the belt slipped, just as the OP did), injectors are firing, 12 volts on the center green/orange coil wire, NO ground pulse from the two outer wires running from the PCM.
I replaced the crank sensor, cam sensor, wiring harness, PCM (twice), coil, plugs, wires, reset the timing, and I still have no spark.
If you do a search, you will find my thread from a couple years ago.
Also, if you happen to find a solution, PLEASE post it. Without this car running, the most people are willing to pay is $300 bucks. I have more than that into it just fighting with this issue...
The scenario is exactly the same as the OP. I did a head gasket, timing belt, and water pump. Ran great for several starts, when suddenly it shut of without warning. No codes, timing is dead on (reset thinking the belt slipped, just as the OP did), injectors are firing, 12 volts on the center green/orange coil wire, NO ground pulse from the two outer wires running from the PCM.
I replaced the crank sensor, cam sensor, wiring harness, PCM (twice), coil, plugs, wires, reset the timing, and I still have no spark.
If you do a search, you will find my thread from a couple years ago.
Also, if you happen to find a solution, PLEASE post it. Without this car running, the most people are willing to pay is $300 bucks. I have more than that into it just fighting with this issue...
Thread Starter
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Registered User
Joined: Oct 2009
Posts: 21
Likes: 0
Guys, I had this exact same problem... Over two years ago. And guess what? The car is still sitting in my driveway with no spark...
The scenario is exactly the same as the OP. I did a head gasket, timing belt, and water pump. Ran great for several starts, when suddenly it shut of without warning. No codes, timing is dead on (reset thinking the belt slipped, just as the OP did), injectors are firing, 12 volts on the center green/orange coil wire, NO ground pulse from the two outer wires running from the PCM.
I replaced the crank sensor, cam sensor, wiring harness, PCM (twice), coil, plugs, wires, reset the timing, and I still have no spark.
If you do a search, you will find my thread from a couple years ago.
Also, if you happen to find a solution, PLEASE post it. Without this car running, the most people are willing to pay is $300 bucks. I have more than that into it just fighting with this issue...
The scenario is exactly the same as the OP. I did a head gasket, timing belt, and water pump. Ran great for several starts, when suddenly it shut of without warning. No codes, timing is dead on (reset thinking the belt slipped, just as the OP did), injectors are firing, 12 volts on the center green/orange coil wire, NO ground pulse from the two outer wires running from the PCM.
I replaced the crank sensor, cam sensor, wiring harness, PCM (twice), coil, plugs, wires, reset the timing, and I still have no spark.
If you do a search, you will find my thread from a couple years ago.
Also, if you happen to find a solution, PLEASE post it. Without this car running, the most people are willing to pay is $300 bucks. I have more than that into it just fighting with this issue...
Registered User
Joined: Oct 2009
Posts: 9
Likes: 0
this is rediculious.... the messed up part too is there is always a solution. i just don't understand when i change everything in the motor and it still has no spark, then i had spark for 5 minutes and i did a couple of hoo raas and then i lost it again. i even ran spare grounds to the head, to the coil pack bolts, to the block, and 2 to the frame.... im stumped.
Thread Starter
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Registered User
Joined: Oct 2009
Posts: 21
Likes: 0
this is rediculious.... the messed up part too is there is always a solution. i just don't understand when i change everything in the motor and it still has no spark, then i had spark for 5 minutes and i did a couple of hoo raas and then i lost it again. i even ran spare grounds to the head, to the coil pack bolts, to the block, and 2 to the frame.... im stumped.
Registered User
Joined: Oct 2009
Posts: 9
Likes: 0
i check all the fuses right after i lost spark the second time, everything is still fine... im starting to think that since i had the coil and cam sensor plug changed around, the pulses of 12v's got sent to the crank sensor which is only suppsosed to have 8v's and maybe it blew out for real this time...
Thread Starter
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Registered User
Joined: Oct 2009
Posts: 21
Likes: 0
i check all the fuses right after i lost spark the second time, everything is still fine... im starting to think that since i had the coil and cam sensor plug changed around, the pulses of 12v's got sent to the crank sensor which is only suppsosed to have 8v's and maybe it blew out for real this time...
Thread Starter
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Registered User
Joined: Oct 2009
Posts: 21
Likes: 0
The crank sensor and cam sensor have 8V separately, if you had the coil plug connected to the cam sensor, it would not have sent 12V to the crank sensor (you would have had to hooked the coil plug directly to the crank sensor). The PCM is what controls voltage to the sensors.
