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 Post subject: 02 neon, had fire w broken timing belt but now
PostPosted: Mon Nov 22, 2010 6:34 pm 
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Neon Enthusiast

Joined: Tue Sep 16, 2008 9:36 am
Posts: 118
have replaced belt and now have no spark. All the timing marks were right on, have replaced the cam sensor and crank sensor, checked all the grounds and still have no fire! Anyone have any idea??????????


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Mon Nov 22, 2010 11:04 pm 
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Location: -1 1/2hr. East of Belvidere,IL.-
I wonder if your ASD relay is providing power to the ignition circuit..... If not, why ??


Are you sure the battery terminals are tight and clean ?? ( just making sure it's not something stooopid and simple.... I've done that) :blush:


- Nick

_________________
-1995 4-dr SOHC ATX= "Organ Donor"
-1998 2-dr SOHC MTX= 52mm TB; Maddog STS
-1999 4-dr DOHC ATX= UDP, Kirk Intake
-2000 Ply.LX with MTX = Maddog STS; CAI; Magnaflow muffler

-1971 Ply.Scamp SL6cyl. (TRADED for '83 Ddg.Rampage)
-1968 Chry.300 w/440 V8 (sold)
"MoPar or No Car"


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Tue Nov 23, 2010 7:32 am 
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Neon Enthusiast

Joined: Tue Sep 16, 2008 9:36 am
Posts: 118
Havent checked the asd relay, but will today. Battery terminals are clean enough for every light, radio etc to work and cranks over fine, just no spark. Thanks though and I am hoping something stooopid! LOL


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Tue Nov 23, 2010 12:46 pm 
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Neon Enthusiast

Joined: Tue Sep 16, 2008 9:36 am
Posts: 118
I checked the asd relay and replaced with the horn relay, still no spark. Its an sxt with keyless entry, and I thought maybe anti theft, although it has no alarm or lights showing it does. Anyone else have any ideas?


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Tue Nov 23, 2010 6:54 pm 
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Location: Metro Detroit, Michigan
Check the wiring harness and the pins in the connector on the coil pack.

_________________
1995 Sport Sedan (The Frog), 2.0L sohc/atx, Bone Stock Canadian model, Belvidere built 4/94, 200,275 miles (322,297 kms) as of 07-06-14. Given to my brother.
2004 R/T, all stock, 2.0L Magnum/mtx, Belvidere built 11/03, 156,933 miles as of 06-25-14, My current DD.
20+ years Chrysler Tech


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Wed Nov 24, 2010 1:45 pm 
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Neon Enthusiast

Joined: Tue Sep 16, 2008 9:36 am
Posts: 118
Checked the whole harness, and the only thing I seen that may be a problem is the part of the harness that goes thru the heat shield is pinched right before it goes to the crankshaft sensor. The coil pins were good but I replaced the coil and still nothing! ANYONE??????????


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Wed Nov 24, 2010 10:23 pm 
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hotracer15 wrote:
Checked the whole harness, and the only thing I seen that may be a problem is the part of the harness that goes thru the heat shield is pinched right before it goes to the crankshaft sensor. The coil pins were good but I replaced the coil and still nothing! ANYONE??????????


Did you repair the wiring where the "pinch" was / is ??
Did you test the wiring to the crank sensor, for continuity ??


- Nick

_________________
-1995 4-dr SOHC ATX= "Organ Donor"
-1998 2-dr SOHC MTX= 52mm TB; Maddog STS
-1999 4-dr DOHC ATX= UDP, Kirk Intake
-2000 Ply.LX with MTX = Maddog STS; CAI; Magnaflow muffler

-1971 Ply.Scamp SL6cyl. (TRADED for '83 Ddg.Rampage)
-1968 Chry.300 w/440 V8 (sold)
"MoPar or No Car"


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Thu Nov 25, 2010 6:05 pm 
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Neon Enthusiast

Joined: Tue Sep 16, 2008 9:36 am
Posts: 118
It was double or triple wrapped with some type of heat tape that didnt have so much as a nick in it after all. I am positive it was right on on the timing marks, but lets just say it wasnt, it would still have spark wouldnt it?


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Thu Nov 25, 2010 9:27 pm 
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Did you check the wiring as Nickko said? Can't hurt to check it and be positvely sure that the wiring is'nt the problem. Need to eliminate all possibilities. The Crank sensor is a very critical one. If the pcm does'nt see a signal from it, it won't trigger the coil. In fact, the pcm will trigger the asd relay. That is why i said to check the wiring. If you can get a hold of a scantool that can give you a live readout of all the sensors (the drb3 has that capability), you would be able to see what the crank sensor is sending the pcm. Without a scantool, you need to get a FSM and follow the diag. procedures to determine the cause of your no start.

_________________
1995 Sport Sedan (The Frog), 2.0L sohc/atx, Bone Stock Canadian model, Belvidere built 4/94, 200,275 miles (322,297 kms) as of 07-06-14. Given to my brother.
2004 R/T, all stock, 2.0L Magnum/mtx, Belvidere built 11/03, 156,933 miles as of 06-25-14, My current DD.
20+ years Chrysler Tech


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Wed Dec 01, 2010 8:42 am 
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Neon Enthusiast

Joined: Tue Sep 16, 2008 9:36 am
Posts: 118
AND the verdict was: fried the ecm at some point! OUCH!


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 Post subject: Re: 02 neon, had fire w broken timing belt but now
PostPosted: Wed Dec 01, 2010 10:01 pm 
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Location: -1 1/2hr. East of Belvidere,IL.-
hotracer15 wrote:
AND the verdict was: fried the ecm at some point! OUCH!


Hmm.

I have fried PCM's in my old '95, brought about by lack of (proper) grounding.



The grounding leads that screw into the upper radiator core support, near the driver's side headlamp, provides grounding for the PCM.
Be sure those are properly connected.
I go so far as to clean it down to bare metal, remove the paint on the core support; and then slather a generous coat of Dielectric Grease after attaching them, to help keep moisture away and preserve a good connection.

If there is a problem with the wiring harness, that may cause the electrical current to attempt to find 'ground' in another location.... and that could end up being through the PCM.
I've gone so far as to 'shield' the PCMs on my Neons, so that they don't actually contact the body of the car.... I'll mount a layer of insulation between the PCM and the mounting spot.


- Nick

_________________
-1995 4-dr SOHC ATX= "Organ Donor"
-1998 2-dr SOHC MTX= 52mm TB; Maddog STS
-1999 4-dr DOHC ATX= UDP, Kirk Intake
-2000 Ply.LX with MTX = Maddog STS; CAI; Magnaflow muffler

-1971 Ply.Scamp SL6cyl. (TRADED for '83 Ddg.Rampage)
-1968 Chry.300 w/440 V8 (sold)
"MoPar or No Car"


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