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Re: 96 GC don't start

I will try once again....

The battery has a large black wire that goes to the engine block. This
grounds the engine to the battery.

Some of the sensors for the engine have their grounds also on the engine
block. They are small black wires and bolt on behind the oil filter on
the passenger side.

The computer that runs everything uses the Jeep body for a ground.

In order to have the computer working, you need a solid ground from the
engine and battery to the Jeep body.

'This' ground is an open wire mesh wire on a bolt at the rear drivers
side of the engine head and goes up to the firewall.

'This' ground rots out really fast!!!

If this ground is not there, you 'can' still test some ground on the
body with a light, but this can 'parasitic' ground from things like the
gas cable and gear shifter. When the starter is turning, there will not
be enough ground for the computer to fire up if that mesh cable has
rotted away.

Once rotted, it only takes that last wobble of the engine for it to fall
of and stop you dead.

That happened to me 30 seconds after I finished changing the CPS on
mine.

You can check this easily! Simply run a booster cable from the battery
negative to a clean point on the body to ground it and see if it starts.

Or just 'look' at the mesh wire to see if it still exists in one piece.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Le CLone wrote:
>
> Using a test light we are able to get ground from various parts on the
> engine,
>
> Assuming that the sensor quit while i was using the vehicules, because the
> day before it ran fine except it never start the day after, what sensor it
> essential for the vehicule to start but is not required when the vehicules
> is running ?
>
> --
> LE CLONE
>
> 279 Notre-Dame
> Gatineau, Qc
> J8P 1K6
> (819) 643-0511
> SANS FRAIS 1 888 643 0511
>
> le-clone@bellnet.ca
> www.leclone.com
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:4190F182.252BD632@sympatico.ca...
> > Busted ground man......
> >
> > You live in the 'classic' rust belt so bad that your axles are rotting
> > away right?
> >
> > Have you changed the open wire mesh ground from the engine to the
> > firewall yet?
> >
> > Do you think that open mesh wire should last longer then a solid steel
> > axle?
> >
> > Believe me, they rot 'way' faster than axles.......
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Le CLone wrote:
> > >
> > > well they got the new computer today and the jeep still does not start
> !!!!!
> > > now im really stuck behind the mechanic and my 0- knownledge in
> > > electric.....
> > >
> > > pat
> > >
> > > --
> > > --
> > > LE CLONE
> > >
> > > 279 Notre-Dame
> > > Gatineau, Qc
> > > J8P 1K6
> > > (819) 643-0511
> > > SANS FRAIS 1 888 643 0511
> > >
> > > le-clone@bellnet.ca
> > > www.leclone.com
> > > "mic canic" <dbrider@cac.net> wrote in message
> > > news:418CB96C.A135C40A@cac.net...
> > > > careful !alot of cheaper scan tools will do that because they have
> limited
> > > > software that interfaces with the vehicle
> > > > i see it all the time with snapon even
> > > > take it to a dealer you trust it will be cheaper inthe long run
> > > >
> > > > Le CLone wrote:
> > > >
> > > > > Everything seem to lead to a bad computer, when he connect is scan
> tools
> > > it
> > > > > get not code and an error reporting to put the key on. + their is
> > > various
> > > > > cable that have no power. He said that their is aftermarket computer
> > > > > available for my GC. DC want 585 CAN + tx for a new one......
> > > > >
> > > > > I just hope this is not a trial and error because it's getting
> > > expensive.
> > > > >
> > > > > Pat
> > > > >
> > > > > --
> > > > > LE CLONE
> > > > >
> > > > > 279 Notre-Dame
> > > > > Gatineau, Qc
> > > > > J8P 1K6
> > > > > (819) 643-0511
> > > > > SANS FRAIS 1 888 643 0511
> > > > >
> > > > > le-clone@bellnet.ca
> > > > > www.leclone.com
> > > > > "DougW" <post.replies@invalid.address> wrote in message
> > > > > news:LkKid.98511$tU4.89125@okepread06...
> > > > > > mic canic did pass the time by typing:
> > > > > > > needs a crank sensor won't get either with a bad one
> > > > > >
> > > > > > This might help.
> > > > > > http://members.cox.net/wilsond/cps/
> > > > > >
> > > > > > I've had no-fuel, no-spark, caused by a bad ignition coil.
> > > > > > The ASD (automatic shutdown relay) will turn off power to
> > > > > > both the coil and the fuel pump if the jeep does not start
> > > > > > in the first two to three engine revolutions.
> > > > > >
> > > > > > > Le CLone wrote:
> > > > > > >
> > > > > > >> My mechanic has just reported me that he does not get fuel or
> > > spark...
> > > > > ?
> > > > > > >>
> > > > > >
> > > > > >
> > > >

Re: 96 GC don't start

You haven't already replaced the Crankshaft Position Sensor????
http://www.off-road.com/jeep/cheroke...tdcsensor.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Le CLone wrote:
>
> The Mechanic is now in the dash cluster, i think he really don't know where
> to go and he want to avoid to replace parts for nothing.
> I told him that all race car have not dash and they still start..... Should
> i start by replacing the Crankshaft Position Sensor ot the top dead center
> sensor ?
>
> I need my truck since im running a computer store and tommorow will be 1
> week without transportation.....
>
> --
> LE CLONE
>
> 279 Notre-Dame
> Gatineau, Qc
> J8P 1K6
> (819) 643-0511
> SANS FRAIS 1 888 643 0511
>
> le-clone@bellnet.ca
> www.leclone.com

Re: 96 GC don't start

Bill the page is referring to the TOP DEAD CENTER sensor
and you are reporting Crankshaft Position Sensor
are they both the same ?

I need to start some trial and error now because i really need my JEEP
running.
so i made the mechanic look at all the ground as Mike suggest and will order
the sensor at the same time.
the TDC is 140 $ Can, im trying to avoid paying and trying.

let me know if both of them are the same sensor.

Thanks

Pat

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:41911B06.D4E4FEE9@cox.net...
> You haven't already replaced the Crankshaft Position Sensor????
> http://www.off-road.com/jeep/cheroke...tdcsensor.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Le CLone wrote:
> >
> > The Mechanic is now in the dash cluster, i think he really don't know
where
> > to go and he want to avoid to replace parts for nothing.
> > I told him that all race car have not dash and they still start.....
Should
> > i start by replacing the Crankshaft Position Sensor ot the top dead
center
> > sensor ?
> >
> > I need my truck since im running a computer store and tommorow will be 1
> > week without transportation.....
> >
> > --
> > LE CLONE
> >
> > 279 Notre-Dame
> > Gatineau, Qc
> > J8P 1K6
> > (819) 643-0511
> > SANS FRAIS 1 888 643 0511
> >
> > le-clone@bellnet.ca
> > www.leclone.com

Re: 96 GC don't start

Yup, one is what a Jeeper would call it. the other is what a
Germany calls it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Le CLone wrote:
>
> Bill the page is referring to the TOP DEAD CENTER sensor
> and you are reporting Crankshaft Position Sensor
> are they both the same ?