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Next: 2004 Dakota Quad Cab power locks
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External
Since: Jul 13, 2008
Posts: 4
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(Msg. 1) Posted: Sun Jul 13, 2008 2:54 am
Post subject: Crankshaft sensor - 1998 Dodge Caravan 3.3
Archived from groups: alt>autos>dodge (more info?)
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Having issue with power supply regarding wire running from the crankshaft
sensor. When problem happens, the van will crank but not start. On a scope,
when it happens it does not show any codes, but indicates crank 0, cam 0.
The crankshaft sensor was replaced 3 weeks ago after the problem first
started (with a non-Chrysler product). The mechanic at that time still had
the issue of the no-start after this was done. The mechanic advised that the
wire regarding the crank sensor (when the wire was disconnected from a power
source) seemed to be drawing power from another wire in the harness. He
placed the wire on the opposite side of the wire harness, and it started
fine for 3 weeks. Recently, the van stopped again, and this time there also
seemed to be a power issue with the wire connected to the crankshaft sensor.
The same mechanic said he was testing the wire, and he unplugged the wire
(one near exhaust manifold and another near front of engine) and it started
again and has been fine. He says I have to do something, and I am wondering
if that wire may be corroded, and should be replaced. The mechanic is
talking of replacing the wire with another length, and soldering it to the
original wire below the plug-in. Does this seem a reasonable solution. He
says it may in fact be something else. What are your thoughts on this
matter. Thanks for your help. |
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External
Since: Nov 24, 2005
Posts: 31
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(Msg. 2) Posted: Sun Jul 13, 2008 6:17 am
Post subject: Re: Crankshaft sensor - 1998 Dodge Caravan 3.3 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jul 13, 1:54 am, <Mike> wrote:
> Having issue with power supply regarding wire running from the crankshaft
> sensor. When problem happens, the van will crank but not start. On a scope,
> when it happens it does not show any codes, but indicates crank 0, cam 0.
>
> The crankshaft sensor was replaced 3 weeks ago after the problem first
> started (with a non-Chrysler product). The mechanic at that time still had
> the issue of the no-start after this was done. The mechanic advised that the
> wire regarding the crank sensor (when the wire was disconnected from a power
> source) seemed to be drawing power from another wire in the harness. He
> placed the wire on the opposite side of the wire harness, and it started
> fine for 3 weeks. Recently, the van stopped again, and this time there also
> seemed to be a power issue with the wire connected to the crankshaft sensor.
> The same mechanic said he was testing the wire, and he unplugged the wire
> (one near exhaust manifold and another near front of engine) and it started
> again and has been fine. He says I have to do something, and I am wondering
> if that wire may be corroded, and should be replaced. The mechanic is
> talking of replacing the wire with another length, and soldering it to the
> original wire below the plug-in. Does this seem a reasonable solution. He
> says it may in fact be something else. What are your thoughts on this
> matter. Thanks for your help.
Stand by, Dan C. will be along shortly........... |
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External
Since: Nov 12, 2004
Posts: 792
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(Msg. 3) Posted: Sun Jul 13, 2008 8:22 am
Post subject: Re: Crankshaft sensor - 1998 Dodge Caravan 3.3 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article <48799efe$0$4064$9a566e8b@news.aliant.net>, <Mike> wrote:
> Having issue with power supply regarding wire running from the crankshaft
> sensor.
Running -TO- the crankshaft sensor.
8 volt supply, pin 44 of the PCM, supplies 8 volts to the crankshaft
sensor, camshaft sensor and flex fuel sensor if equipped.
Any of these can short out and kill the supply voltage to the other
sensors making them inop.
> When problem happens, the van will crank but not start. On a scope,
> when it happens it does not show any codes, but indicates crank 0, cam 0.
On a scan tool?
> The crankshaft sensor was replaced 3 weeks ago after the problem first
> started (with a non-Chrysler product). The mechanic at that time still had
> the issue of the no-start after this was done. The mechanic advised that the
> wire regarding the crank sensor (when the wire was disconnected from a power
> source) seemed to be drawing power from another wire in the harness. He
> placed the wire on the opposite side of the wire harness, and it started
> fine for 3 weeks. Recently, the van stopped again, and this time there also
> seemed to be a power issue with the wire connected to the crankshaft sensor.
> The same mechanic said he was testing the wire, and he unplugged the wire
> (one near exhaust manifold and another near front of engine) and it started
> again and has been fine. He says I have to do something, and I am wondering
> if that wire may be corroded, and should be replaced. The mechanic is
> talking of replacing the wire with another length, and soldering it to the
> original wire below the plug-in. Does this seem a reasonable solution. He
> says it may in fact be something else. What are your thoughts on this
> matter. Thanks for your help.
I'd unplug all sensors powered by the 8 volt supply and test for 8 volts
being present. If so, one of those sensors may be shorting and drawing
the 8 volt supply down.
If you don't have 8 volts at the sensors when they are unplugged, look
for an open circuit in the 8 volt supply wire, if you don't find an open
circuit, test for 8 volts directly at pin #44 at the PCM.
Also check for a broken flywheel, if the cam and crank sensors go out of
synch because of a broken (shifted) flywheel, you'll get the exact
symptoms you describe. >> Stay informed about: Crankshaft sensor - 1998 Dodge Caravan 3.3 |
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External
Since: Nov 24, 2005
Posts: 31
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(Msg. 4) Posted: Sun Jul 13, 2008 11:52 am
Post subject: Re: Crankshaft sensor - 1998 Dodge Caravan 3.3 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jul 13, 2:10 pm, <Mike> wrote:
> Hi Dan
> Thanks for your help. I would point out that we also replaced the computer
> in the van 3 weeks ago, with a used one. I will mention your comments to my
> mechanic. He worked at Chrysler, and was mentioning to me a situation about
> a van that he worked on while at Chrysler, that had some type of flywheel
> problem, that induced other problems, like you were referring to. Please
> note that we weren't using the van a lot over the winter, and it was sitting
> for approximately 2 months. When I started it after sitting for 2 months, it
> would not move, and I waited for approximately 5 minutes before it would
> move. I remember hearing a "clunk" noise just before it started to move.
> Would this be a symptom of a flywheel problem? He is going to look at it
> again next Thursday. Mike
>
> "aarcuda69062" <nonel....TakeThisOut@sbcglobal.net> wrote in message
>
> news:nonelson-7B1639.08223313072008@news.mil.sbcglobal.net...
>
> > In article <48799efe$0$4064$9a566...@news.aliant.net>, <Mike> wrote:
>
> > > Having issue with power supply regarding wire running from the
> crankshaft
> > > sensor.
>
> > Running -TO- the crankshaft sensor.
> > 8 volt supply, pin 44 of the PCM, supplies 8 volts to the crankshaft
> > sensor, camshaft sensor and flex fuel sensor if equipped.
> > Any of these can short out and kill the supply voltage to the other
> > sensors making them inop.
>
> > > When problem happens, the van will crank but not start. On a scope,
> > > when it happens it does not show any codes, but indicates crank 0, cam
> 0.
>
> > On a scan tool?
>
> > > The crankshaft sensor was replaced 3 weeks ago after the problem first
> > > started (with a non-Chrysler product). The mechanic at that time still
> had
> > > the issue of the no-start after this was done. The mechanic advised that
> the
> > > wire regarding the crank sensor (when the wire was disconnected from a
> power
> > > source) seemed to be drawing power from another wire in the harness. He
> > > placed the wire on the opposite side of the wire harness, and it started
> > > fine for 3 weeks. Recently, the van stopped again, and this time there
> also
> > > seemed to be a power issue with the wire connected to the crankshaft
> sensor.
> > > The same mechanic said he was testing the wire, and he unplugged the
> wire
> > > (one near exhaust manifold and another near front of engine) and it
> started
> > > again and has been fine. He says I have to do something, and I am
> wondering
> > > if that wire may be corroded, and should be replaced. The mechanic is
> > > talking of replacing the wire with another length, and soldering it to
> the
> > > original wire below the plug-in. Does this seem a reasonable solution.
> He
> > > says it may in fact be something else. What are your thoughts on this
> > > matter. Thanks for your help.
>
> > I'd unplug all sensors powered by the 8 volt supply and test for 8 volts
> > being present. If so, one of those sensors may be shorting and drawing
> > the 8 volt supply down.
> > If you don't have 8 volts at the sensors when they are unplugged, look
> > for an open circuit in the 8 volt supply wire, if you don't find an open
> > circuit, test for 8 volts directly at pin #44 at the PCM.
>
> > Also check for a broken flywheel, if the cam and crank sensors go out of
> > synch because of a broken (shifted) flywheel, you'll get the exact
> > symptoms you describe.
errr....that's not Dan. aarcuda is helpful. Dan C has social issues. >> Stay informed about: Crankshaft sensor - 1998 Dodge Caravan 3.3 |
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External
Since: Nov 12, 2004
Posts: 792
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(Msg. 5) Posted: Sun Jul 13, 2008 2:57 pm
Post subject: Re: Crankshaft sensor - 1998 Dodge Caravan 3.3 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Jul 13, 2008
Posts: 4
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(Msg. 6) Posted: Sun Jul 13, 2008 3:10 pm
Post subject: Re: Crankshaft sensor - 1998 Dodge Caravan 3.3 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Hi Dan
Thanks for your help. I would point out that we also replaced the computer
in the van 3 weeks ago, with a used one. I will mention your comments to my
mechanic. He worked at Chrysler, and was mentioning to me a situation about
a van that he worked on while at Chrysler, that had some type of flywheel
problem, that induced other problems, like you were referring to. Please
note that we weren't using the van a lot over the winter, and it was sitting
for approximately 2 months. When I started it after sitting for 2 months, it
would not move, and I waited for approximately 5 minutes before it would
move. I remember hearing a "clunk" noise just before it started to move.
Would this be a symptom of a flywheel problem? He is going to look at it
again next Thursday. Mike
"aarcuda69062" <nonelson.DeleteThis@sbcglobal.net> wrote in message
news:nonelson-7B1639.08223313072008@news.mil.sbcglobal.net...
> In article <48799efe$0$4064$9a566e8b@news.aliant.net>, <Mike> wrote:
>
> > Having issue with power supply regarding wire running from the
crankshaft
> > sensor.
>
> Running -TO- the crankshaft sensor.
> 8 volt supply, pin 44 of the PCM, supplies 8 volts to the crankshaft
> sensor, camshaft sensor and flex fuel sensor if equipped.
> Any of these can short out and kill the supply voltage to the other
> sensors making them inop.
>
> > When problem happens, the van will crank but not start. On a scope,
> > when it happens it does not show any codes, but indicates crank 0, cam
0.
>
> On a scan tool?
>
> > The crankshaft sensor was replaced 3 weeks ago after the problem first
> > started (with a non-Chrysler product). The mechanic at that time still
had
> > the issue of the no-start after this was done. The mechanic advised that
the
> > wire regarding the crank sensor (when the wire was disconnected from a
power
> > source) seemed to be drawing power from another wire in the harness. He
> > placed the wire on the opposite side of the wire harness, and it started
> > fine for 3 weeks. Recently, the van stopped again, and this time there
also
> > seemed to be a power issue with the wire connected to the crankshaft
sensor.
> > The same mechanic said he was testing the wire, and he unplugged the
wire
> > (one near exhaust manifold and another near front of engine) and it
started
> > again and has been fine. He says I have to do something, and I am
wondering
> > if that wire may be corroded, and should be replaced. The mechanic is
> > talking of replacing the wire with another length, and soldering it to
the
> > original wire below the plug-in. Does this seem a reasonable solution.
He
> > says it may in fact be something else. What are your thoughts on this
> > matter. Thanks for your help.
>
> I'd unplug all sensors powered by the 8 volt supply and test for 8 volts
> being present. If so, one of those sensors may be shorting and drawing
> the 8 volt supply down.
> If you don't have 8 volts at the sensors when they are unplugged, look
> for an open circuit in the 8 volt supply wire, if you don't find an open
> circuit, test for 8 volts directly at pin #44 at the PCM.
>
> Also check for a broken flywheel, if the cam and crank sensors go out of
> synch because of a broken (shifted) flywheel, you'll get the exact
> symptoms you describe. >> Stay informed about: Crankshaft sensor - 1998 Dodge Caravan 3.3 |
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External
Since: Nov 12, 2004
Posts: 792
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(Msg. 7) Posted: Sun Jul 13, 2008 3:10 pm
Post subject: Re: Crankshaft sensor - 1998 Dodge Caravan 3.3 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article <487a4b6e$0$4050$9a566e8b@news.aliant.net>, <Mike> wrote:
> Hi Dan
I'm not Dan.
> Thanks for your help. I would point out that we also replaced the computer
> in the van 3 weeks ago, with a used one.
uh-oh... was the used computer programmed correctly?
Was the used computer from a vehicle with VTSS?
Does your vehicle have VTSS?
> I will mention your comments to my
> mechanic. He worked at Chrysler, and was mentioning to me a situation about
> a van that he worked on while at Chrysler, that had some type of flywheel
> problem, that induced other problems, like you were referring to. Please
> note that we weren't using the van a lot over the winter, and it was sitting
> for approximately 2 months. When I started it after sitting for 2 months, it
> would not move, and I waited for approximately 5 minutes before it would
> move. I remember hearing a "clunk" noise just before it started to move.
> Would this be a symptom of a flywheel problem?
Could very well be.
> He is going to look at it
> again next Thursday. Mike >> Stay informed about: Crankshaft sensor - 1998 Dodge Caravan 3.3 |
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