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1996 3.0 Caravan.....No Spark

Posted By: origcharger

1996 3.0 Caravan.....No Spark - 07/27/08 02:58 AM

After sitting for a couple of weeks we have a 96 Caravan 3.0 that won't start. Distributor is turning but no spark at coil wire, has codes 11,12 & 55. I believe it points to camshaft position sensor which seems to only be available inside a $300 reman distributor. Hesitant to spend the coin before consulting with the knowledgeable folks on this board.
Posted By: stumpy

Re: 1996 3.0 Caravan.....No Spark - 07/27/08 04:04 PM

I bougfht a pick up form the parts store for $75 with life time warrenty for my 3.9 v6. I'd try looking around somemore or hit the junk yard.
Posted By: Anonymous

Re: 1996 3.0 Caravan.....No Spark - 07/28/08 12:56 AM

found this on ebay
http://cgi.ebay.com/ebaymotors/chrylser-...sspagenameZWDVW
Posted By: origcharger

Re: 1996 3.0 Caravan.....No Spark - 08/05/08 01:56 AM

Thanks for the responses. Heres an update;

Tried distributor from a running 97 3.0, still no start.

Ignition coil from the 96 works on the 97.

The 96 ECM is a differant part # than the 97s so no verification of good or no good can be had there.

Only good news is we didn't drop $300 on a reman distributor to find out that was not the problem.

So back to head scratching and having a few
Posted By: Jim L

Re: 1996 3.0 Caravan.....No Spark - 08/05/08 03:10 PM

You need to check if it has injector pulse, you need to check primary wiring at the coil. You should have power from the ASD relay. PCM will ground coil and take away ground while cranking. If you have access to a scanner, you need to see if the cam and crank sensors are in sync. Also make sure the VSS read 0mph, or the PCM will not ground the ASD relay to give power to the coil. If you have access to a lab scope you can check CMP and CKP waveforms at the PCM.
Posted By: origcharger

Re: 1996 3.0 Caravan.....No Spark - 08/06/08 03:29 AM

Quote:

You need to check if it has injector pulse, you need to check primary wiring at the coil. You should have power from the ASD relay. PCM will ground coil and take away ground while cranking. If you have access to a scanner, you need to see if the cam and crank sensors are in sync. Also make sure the VSS read 0mph, or the PCM will not ground the ASD relay to give power to the coil. If you have access to a lab scope you can check CMP and CKP waveforms at the PCM.



Thank You!

There is battery voltage supplied to the coil connector for a short time when you start cranking, then it goes away, I assumed it went away becuase ECM detected no signal coming from cam sensor/distributor?
I am unaware that this 3.0 has a crank sensor?? I do have a 1993 FSM, I have found no referance to crank sensor in there but I have found this 96 uses a much differant distributor/cam sensor and ECM than is pictured/ described in the 93 book. Does the 96 have a crank sensor but the 93s don't? Where is the crank sensor located?
Thank you again for the help.
Posted By: NITROUSN

Re: 1996 3.0 Caravan.....No Spark - 08/06/08 01:07 PM

Quote:

I am unaware that this 3.0 has a crank sensor??

Thats because it does not have a crank sensor. Bad information.
Posted By: Jim L

Re: 1996 3.0 Caravan.....No Spark - 08/06/08 05:24 PM

95 and earlier don't have them, but 96 and later do, according to Mitchell and ALLDATA, its funny too that I checked my parts supplier and they have a crank sensor for a 96 Caravan 3.0.
Posted By: NITROUSN

Re: 1996 3.0 Caravan.....No Spark - 08/06/08 05:29 PM

Quote:

95 and earlier don't have them, but 96 and later do, according to Mitchell and ALLDATA, its funny too that I checked my parts supplier and they have a crank sensor for a 96 Caravan 3.0.



Right. I thought he was working on a 1993 when he mentioned the FSM. He obviously needs the correct fsm for a 1996 because its completely different.
Posted By: Jim L

Re: 1996 3.0 Caravan.....No Spark - 08/06/08 05:31 PM

Here's where it is.

Attached picture 4601781-57429205.gif
Posted By: origcharger

Re: 1996 3.0 Caravan.....No Spark - 08/07/08 02:17 AM

Thanks, I need to track down a 96 FSM before further testing.
Posted By: origcharger

Re: 1996 3.0 Caravan.....No Spark - 08/12/08 02:54 AM

Update, broken wires on the crankshaft position sensor. Thanks for the help and the drawing showing location.
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