96 Grand Cherokee Stalling
11-28-2006, 07:52 PM
#111
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
dougguitar wrote:
soooo close. At lest you have a better idea of what is wrong.
Might try wiggling again, but this time hold the harness still and
wiggle the wires that come out of it one at a time.
Inside that massive thing are several ground spices that can
corrode. I've had mine apart once already and it's a real
pain in the *** even with the wiring book.
> Should I look into replacing the wire harnesses? That looks like a
> nightmare as a DIY job. I couldn't even find any online sources of
> places to buy wire harnesses. It's probably some little short or
> something somewhere, but how to find it? Could it be that the ECM
> itself is hosed?
Dealership is the only place for that harness. :(
You need the service manual and the wiring diagrams for your Jeep.
Then with a ohm meter and ..several days.. you can go through each
wire and check.
Get some replacement wrap and tape because the stuff that's there
tends to break due to age.
--
DougW
soooo close. At lest you have a better idea of what is wrong.
Might try wiggling again, but this time hold the harness still and
wiggle the wires that come out of it one at a time.
Inside that massive thing are several ground spices that can
corrode. I've had mine apart once already and it's a real
pain in the *** even with the wiring book.
> Should I look into replacing the wire harnesses? That looks like a
> nightmare as a DIY job. I couldn't even find any online sources of
> places to buy wire harnesses. It's probably some little short or
> something somewhere, but how to find it? Could it be that the ECM
> itself is hosed?
Dealership is the only place for that harness. :(
You need the service manual and the wiring diagrams for your Jeep.
Then with a ohm meter and ..several days.. you can go through each
wire and check.
Get some replacement wrap and tape because the stuff that's there
tends to break due to age.
--
DougW
11-28-2006, 07:52 PM
#112
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
dougguitar wrote:
soooo close. At lest you have a better idea of what is wrong.
Might try wiggling again, but this time hold the harness still and
wiggle the wires that come out of it one at a time.
Inside that massive thing are several ground spices that can
corrode. I've had mine apart once already and it's a real
pain in the *** even with the wiring book.
> Should I look into replacing the wire harnesses? That looks like a
> nightmare as a DIY job. I couldn't even find any online sources of
> places to buy wire harnesses. It's probably some little short or
> something somewhere, but how to find it? Could it be that the ECM
> itself is hosed?
Dealership is the only place for that harness. :(
You need the service manual and the wiring diagrams for your Jeep.
Then with a ohm meter and ..several days.. you can go through each
wire and check.
Get some replacement wrap and tape because the stuff that's there
tends to break due to age.
--
DougW
soooo close. At lest you have a better idea of what is wrong.
Might try wiggling again, but this time hold the harness still and
wiggle the wires that come out of it one at a time.
Inside that massive thing are several ground spices that can
corrode. I've had mine apart once already and it's a real
pain in the *** even with the wiring book.
> Should I look into replacing the wire harnesses? That looks like a
> nightmare as a DIY job. I couldn't even find any online sources of
> places to buy wire harnesses. It's probably some little short or
> something somewhere, but how to find it? Could it be that the ECM
> itself is hosed?
Dealership is the only place for that harness. :(
You need the service manual and the wiring diagrams for your Jeep.
Then with a ohm meter and ..several days.. you can go through each
wire and check.
Get some replacement wrap and tape because the stuff that's there
tends to break due to age.
--
DougW
11-28-2006, 08:24 PM
#113
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
Yeah, I was the guy who suggested moving to the 'wiggle test' phase.
Sometimes (!) you can pin it down this way.
When you mention in your message that dim lights and intermittant but
persistant electrical issues are present, I can't help but think BAD
GROUND. And yes, some of the wires you wiggled are ground wires.
It sounds to me like you're closing in on your gremlin. Before you go
any further, double-check all ground straps, from battery to engine,
battery to firewall, etc. Even if they look good, unbolt every one and
clean with sandpaper, and smear some vasoline or dilectric grease on
them before reassembling.
If it helps any, every mechanic I know has said that electrical gremlins
are the most difficult thing they ever deal with.
Sometimes (!) you can pin it down this way.
When you mention in your message that dim lights and intermittant but
persistant electrical issues are present, I can't help but think BAD
GROUND. And yes, some of the wires you wiggled are ground wires.
It sounds to me like you're closing in on your gremlin. Before you go
any further, double-check all ground straps, from battery to engine,
battery to firewall, etc. Even if they look good, unbolt every one and
clean with sandpaper, and smear some vasoline or dilectric grease on
them before reassembling.
If it helps any, every mechanic I know has said that electrical gremlins
are the most difficult thing they ever deal with.
11-28-2006, 08:24 PM
#114
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
Yeah, I was the guy who suggested moving to the 'wiggle test' phase.
Sometimes (!) you can pin it down this way.
When you mention in your message that dim lights and intermittant but
persistant electrical issues are present, I can't help but think BAD
GROUND. And yes, some of the wires you wiggled are ground wires.
It sounds to me like you're closing in on your gremlin. Before you go
any further, double-check all ground straps, from battery to engine,
battery to firewall, etc. Even if they look good, unbolt every one and
clean with sandpaper, and smear some vasoline or dilectric grease on
them before reassembling.
If it helps any, every mechanic I know has said that electrical gremlins
are the most difficult thing they ever deal with.
Sometimes (!) you can pin it down this way.
When you mention in your message that dim lights and intermittant but
persistant electrical issues are present, I can't help but think BAD
GROUND. And yes, some of the wires you wiggled are ground wires.
It sounds to me like you're closing in on your gremlin. Before you go
any further, double-check all ground straps, from battery to engine,
battery to firewall, etc. Even if they look good, unbolt every one and
clean with sandpaper, and smear some vasoline or dilectric grease on
them before reassembling.
If it helps any, every mechanic I know has said that electrical gremlins
are the most difficult thing they ever deal with.
11-28-2006, 08:24 PM
#115
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
Yeah, I was the guy who suggested moving to the 'wiggle test' phase.
Sometimes (!) you can pin it down this way.
When you mention in your message that dim lights and intermittant but
persistant electrical issues are present, I can't help but think BAD
GROUND. And yes, some of the wires you wiggled are ground wires.
It sounds to me like you're closing in on your gremlin. Before you go
any further, double-check all ground straps, from battery to engine,
battery to firewall, etc. Even if they look good, unbolt every one and
clean with sandpaper, and smear some vasoline or dilectric grease on
them before reassembling.
If it helps any, every mechanic I know has said that electrical gremlins
are the most difficult thing they ever deal with.
Sometimes (!) you can pin it down this way.
When you mention in your message that dim lights and intermittant but
persistant electrical issues are present, I can't help but think BAD
GROUND. And yes, some of the wires you wiggled are ground wires.
It sounds to me like you're closing in on your gremlin. Before you go
any further, double-check all ground straps, from battery to engine,
battery to firewall, etc. Even if they look good, unbolt every one and
clean with sandpaper, and smear some vasoline or dilectric grease on
them before reassembling.
If it helps any, every mechanic I know has said that electrical gremlins
are the most difficult thing they ever deal with.
11-28-2006, 08:40 PM
#119
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
Outatime wrote:
> Uh, stupid question:
>
> When you say it won't 'restart', do you mean that the starter will not
> crank the engine over, or that it cranks, but will not fire?
>
> Big difference!
By "won't restart" I meant cranks, but will not start/fire.
Doug B
11-28-2006, 08:40 PM
#120
Guest
Posts: n/a
Re: 96 Grand Cherokee Stalling
Outatime wrote:
> Uh, stupid question:
>
> When you say it won't 'restart', do you mean that the starter will not
> crank the engine over, or that it cranks, but will not fire?
>
> Big difference!
By "won't restart" I meant cranks, but will not start/fire.
Doug B