93 Grand Cherokee-Won't Start in Cold
12-04-2003, 02:47 PM
#14
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
I know, I know. At my wit's end. Only used a short shot though. Figure the
valves are prob. loose enough, a little more wouldn't hurt catastrophically.
"FrankW" <fworm@mxznorpak.ca> wrote in message
news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> Man o Man, Other than an old diesel farm tractor, I wouldn't
> use starter fluid for anything.
>
> D wrote:
>
> > Update to this problem.
> > I got a can of starter fluid and tried it. The car seemed much more
> > willing to start, but still no joy. It did huff a lot more, but didn't
> > actually start. In my view, this points to more of a fuel problem than
> > electrical? If there's concurrence on that, what in the fuel control
> > system would be so subject to the cold temperature?
> > Would appreciate additional thoughts. Thanks.
> >
> > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > Hi all.
> > Hope to find some suggestions here.
> > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > miles, been excellent and still is.
> > Problem is when the temp gets into the 30's, it will crank and
> > crank, give a huff or two like it's trying to start, but no go. New
> > plugs, wires, Oxy sensor, other things over the last couple years.
> > Read a forum message somewhere on a similar problem and the fellow
> > said he finally took off the ECM and heated it in the oven. Seemed
> > it had a crack in the insulating material that let moisture get in
> > and freeze. Or something like that.
> > Possible related symptom; the engine, when running well, gives a
> > 'miss' on acceleration at right around 2800 rpm and has for years.
> > I've gone through most everything but am really suspect of the MAP
> > sensor or the ECM now.
> > I've had a lamp on under the hood for overnight, but no help to
> > start today. I would appreciate any ideas or suggestions for this
> > old beauty.
> > Thank you.
>
valves are prob. loose enough, a little more wouldn't hurt catastrophically.
"FrankW" <fworm@mxznorpak.ca> wrote in message
news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> Man o Man, Other than an old diesel farm tractor, I wouldn't
> use starter fluid for anything.
>
> D wrote:
>
> > Update to this problem.
> > I got a can of starter fluid and tried it. The car seemed much more
> > willing to start, but still no joy. It did huff a lot more, but didn't
> > actually start. In my view, this points to more of a fuel problem than
> > electrical? If there's concurrence on that, what in the fuel control
> > system would be so subject to the cold temperature?
> > Would appreciate additional thoughts. Thanks.
> >
> > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > Hi all.
> > Hope to find some suggestions here.
> > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > miles, been excellent and still is.
> > Problem is when the temp gets into the 30's, it will crank and
> > crank, give a huff or two like it's trying to start, but no go. New
> > plugs, wires, Oxy sensor, other things over the last couple years.
> > Read a forum message somewhere on a similar problem and the fellow
> > said he finally took off the ECM and heated it in the oven. Seemed
> > it had a crack in the insulating material that let moisture get in
> > and freeze. Or something like that.
> > Possible related symptom; the engine, when running well, gives a
> > 'miss' on acceleration at right around 2800 rpm and has for years.
> > I've gone through most everything but am really suspect of the MAP
> > sensor or the ECM now.
> > I've had a lamp on under the hood for overnight, but no help to
> > start today. I would appreciate any ideas or suggestions for this
> > old beauty.
> > Thank you.
>
12-04-2003, 02:47 PM
#15
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
I know, I know. At my wit's end. Only used a short shot though. Figure the
valves are prob. loose enough, a little more wouldn't hurt catastrophically.
"FrankW" <fworm@mxznorpak.ca> wrote in message
news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> Man o Man, Other than an old diesel farm tractor, I wouldn't
> use starter fluid for anything.
>
> D wrote:
>
> > Update to this problem.
> > I got a can of starter fluid and tried it. The car seemed much more
> > willing to start, but still no joy. It did huff a lot more, but didn't
> > actually start. In my view, this points to more of a fuel problem than
> > electrical? If there's concurrence on that, what in the fuel control
> > system would be so subject to the cold temperature?
> > Would appreciate additional thoughts. Thanks.
> >
> > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > Hi all.
> > Hope to find some suggestions here.
> > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > miles, been excellent and still is.
> > Problem is when the temp gets into the 30's, it will crank and
> > crank, give a huff or two like it's trying to start, but no go. New
> > plugs, wires, Oxy sensor, other things over the last couple years.
> > Read a forum message somewhere on a similar problem and the fellow
> > said he finally took off the ECM and heated it in the oven. Seemed
> > it had a crack in the insulating material that let moisture get in
> > and freeze. Or something like that.
> > Possible related symptom; the engine, when running well, gives a
> > 'miss' on acceleration at right around 2800 rpm and has for years.
> > I've gone through most everything but am really suspect of the MAP
> > sensor or the ECM now.
> > I've had a lamp on under the hood for overnight, but no help to
> > start today. I would appreciate any ideas or suggestions for this
> > old beauty.
> > Thank you.
>
valves are prob. loose enough, a little more wouldn't hurt catastrophically.
"FrankW" <fworm@mxznorpak.ca> wrote in message
news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> Man o Man, Other than an old diesel farm tractor, I wouldn't
> use starter fluid for anything.
>
> D wrote:
>
> > Update to this problem.
> > I got a can of starter fluid and tried it. The car seemed much more
> > willing to start, but still no joy. It did huff a lot more, but didn't
> > actually start. In my view, this points to more of a fuel problem than
> > electrical? If there's concurrence on that, what in the fuel control
> > system would be so subject to the cold temperature?
> > Would appreciate additional thoughts. Thanks.
> >
> > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > Hi all.
> > Hope to find some suggestions here.
> > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > miles, been excellent and still is.
> > Problem is when the temp gets into the 30's, it will crank and
> > crank, give a huff or two like it's trying to start, but no go. New
> > plugs, wires, Oxy sensor, other things over the last couple years.
> > Read a forum message somewhere on a similar problem and the fellow
> > said he finally took off the ECM and heated it in the oven. Seemed
> > it had a crack in the insulating material that let moisture get in
> > and freeze. Or something like that.
> > Possible related symptom; the engine, when running well, gives a
> > 'miss' on acceleration at right around 2800 rpm and has for years.
> > I've gone through most everything but am really suspect of the MAP
> > sensor or the ECM now.
> > I've had a lamp on under the hood for overnight, but no help to
> > start today. I would appreciate any ideas or suggestions for this
> > old beauty.
> > Thank you.
>
12-04-2003, 02:47 PM
#16
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
I know, I know. At my wit's end. Only used a short shot though. Figure the
valves are prob. loose enough, a little more wouldn't hurt catastrophically.
"FrankW" <fworm@mxznorpak.ca> wrote in message
news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> Man o Man, Other than an old diesel farm tractor, I wouldn't
> use starter fluid for anything.
>
> D wrote:
>
> > Update to this problem.
> > I got a can of starter fluid and tried it. The car seemed much more
> > willing to start, but still no joy. It did huff a lot more, but didn't
> > actually start. In my view, this points to more of a fuel problem than
> > electrical? If there's concurrence on that, what in the fuel control
> > system would be so subject to the cold temperature?
> > Would appreciate additional thoughts. Thanks.
> >
> > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > Hi all.
> > Hope to find some suggestions here.
> > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > miles, been excellent and still is.
> > Problem is when the temp gets into the 30's, it will crank and
> > crank, give a huff or two like it's trying to start, but no go. New
> > plugs, wires, Oxy sensor, other things over the last couple years.
> > Read a forum message somewhere on a similar problem and the fellow
> > said he finally took off the ECM and heated it in the oven. Seemed
> > it had a crack in the insulating material that let moisture get in
> > and freeze. Or something like that.
> > Possible related symptom; the engine, when running well, gives a
> > 'miss' on acceleration at right around 2800 rpm and has for years.
> > I've gone through most everything but am really suspect of the MAP
> > sensor or the ECM now.
> > I've had a lamp on under the hood for overnight, but no help to
> > start today. I would appreciate any ideas or suggestions for this
> > old beauty.
> > Thank you.
>
valves are prob. loose enough, a little more wouldn't hurt catastrophically.
"FrankW" <fworm@mxznorpak.ca> wrote in message
news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> Man o Man, Other than an old diesel farm tractor, I wouldn't
> use starter fluid for anything.
>
> D wrote:
>
> > Update to this problem.
> > I got a can of starter fluid and tried it. The car seemed much more
> > willing to start, but still no joy. It did huff a lot more, but didn't
> > actually start. In my view, this points to more of a fuel problem than
> > electrical? If there's concurrence on that, what in the fuel control
> > system would be so subject to the cold temperature?
> > Would appreciate additional thoughts. Thanks.
> >
> > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > Hi all.
> > Hope to find some suggestions here.
> > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > miles, been excellent and still is.
> > Problem is when the temp gets into the 30's, it will crank and
> > crank, give a huff or two like it's trying to start, but no go. New
> > plugs, wires, Oxy sensor, other things over the last couple years.
> > Read a forum message somewhere on a similar problem and the fellow
> > said he finally took off the ECM and heated it in the oven. Seemed
> > it had a crack in the insulating material that let moisture get in
> > and freeze. Or something like that.
> > Possible related symptom; the engine, when running well, gives a
> > 'miss' on acceleration at right around 2800 rpm and has for years.
> > I've gone through most everything but am really suspect of the MAP
> > sensor or the ECM now.
> > I've had a lamp on under the hood for overnight, but no help to
> > start today. I would appreciate any ideas or suggestions for this
> > old beauty.
> > Thank you.
>
12-04-2003, 02:58 PM
#17
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
Do you have a ballast resistor like in the Cherokee?
When those go bad, the engine will almost start with the key turning the
starter, but drop to run and it up and dies.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
D wrote:
>
> I know, I know. At my wit's end. Only used a short shot though. Figure the
> valves are prob. loose enough, a little more wouldn't hurt catastrophically.
>
> "FrankW" <fworm@mxznorpak.ca> wrote in message
> news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > use starter fluid for anything.
> >
> > D wrote:
> >
> > > Update to this problem.
> > > I got a can of starter fluid and tried it. The car seemed much more
> > > willing to start, but still no joy. It did huff a lot more, but didn't
> > > actually start. In my view, this points to more of a fuel problem than
> > > electrical? If there's concurrence on that, what in the fuel control
> > > system would be so subject to the cold temperature?
> > > Would appreciate additional thoughts. Thanks.
> > >
> > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > Hi all.
> > > Hope to find some suggestions here.
> > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > > miles, been excellent and still is.
> > > Problem is when the temp gets into the 30's, it will crank and
> > > crank, give a huff or two like it's trying to start, but no go. New
> > > plugs, wires, Oxy sensor, other things over the last couple years.
> > > Read a forum message somewhere on a similar problem and the fellow
> > > said he finally took off the ECM and heated it in the oven. Seemed
> > > it had a crack in the insulating material that let moisture get in
> > > and freeze. Or something like that.
> > > Possible related symptom; the engine, when running well, gives a
> > > 'miss' on acceleration at right around 2800 rpm and has for years.
> > > I've gone through most everything but am really suspect of the MAP
> > > sensor or the ECM now.
> > > I've had a lamp on under the hood for overnight, but no help to
> > > start today. I would appreciate any ideas or suggestions for this
> > > old beauty.
> > > Thank you.
> >
When those go bad, the engine will almost start with the key turning the
starter, but drop to run and it up and dies.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
D wrote:
>
> I know, I know. At my wit's end. Only used a short shot though. Figure the
> valves are prob. loose enough, a little more wouldn't hurt catastrophically.
>
> "FrankW" <fworm@mxznorpak.ca> wrote in message
> news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > use starter fluid for anything.
> >
> > D wrote:
> >
> > > Update to this problem.
> > > I got a can of starter fluid and tried it. The car seemed much more
> > > willing to start, but still no joy. It did huff a lot more, but didn't
> > > actually start. In my view, this points to more of a fuel problem than
> > > electrical? If there's concurrence on that, what in the fuel control
> > > system would be so subject to the cold temperature?
> > > Would appreciate additional thoughts. Thanks.
> > >
> > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > Hi all.
> > > Hope to find some suggestions here.
> > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > > miles, been excellent and still is.
> > > Problem is when the temp gets into the 30's, it will crank and
> > > crank, give a huff or two like it's trying to start, but no go. New
> > > plugs, wires, Oxy sensor, other things over the last couple years.
> > > Read a forum message somewhere on a similar problem and the fellow
> > > said he finally took off the ECM and heated it in the oven. Seemed
> > > it had a crack in the insulating material that let moisture get in
> > > and freeze. Or something like that.
> > > Possible related symptom; the engine, when running well, gives a
> > > 'miss' on acceleration at right around 2800 rpm and has for years.
> > > I've gone through most everything but am really suspect of the MAP
> > > sensor or the ECM now.
> > > I've had a lamp on under the hood for overnight, but no help to
> > > start today. I would appreciate any ideas or suggestions for this
> > > old beauty.
> > > Thank you.
> >
12-04-2003, 02:58 PM
#18
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
Do you have a ballast resistor like in the Cherokee?
When those go bad, the engine will almost start with the key turning the
starter, but drop to run and it up and dies.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
D wrote:
>
> I know, I know. At my wit's end. Only used a short shot though. Figure the
> valves are prob. loose enough, a little more wouldn't hurt catastrophically.
>
> "FrankW" <fworm@mxznorpak.ca> wrote in message
> news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > use starter fluid for anything.
> >
> > D wrote:
> >
> > > Update to this problem.
> > > I got a can of starter fluid and tried it. The car seemed much more
> > > willing to start, but still no joy. It did huff a lot more, but didn't
> > > actually start. In my view, this points to more of a fuel problem than
> > > electrical? If there's concurrence on that, what in the fuel control
> > > system would be so subject to the cold temperature?
> > > Would appreciate additional thoughts. Thanks.
> > >
> > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > Hi all.
> > > Hope to find some suggestions here.
> > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > > miles, been excellent and still is.
> > > Problem is when the temp gets into the 30's, it will crank and
> > > crank, give a huff or two like it's trying to start, but no go. New
> > > plugs, wires, Oxy sensor, other things over the last couple years.
> > > Read a forum message somewhere on a similar problem and the fellow
> > > said he finally took off the ECM and heated it in the oven. Seemed
> > > it had a crack in the insulating material that let moisture get in
> > > and freeze. Or something like that.
> > > Possible related symptom; the engine, when running well, gives a
> > > 'miss' on acceleration at right around 2800 rpm and has for years.
> > > I've gone through most everything but am really suspect of the MAP
> > > sensor or the ECM now.
> > > I've had a lamp on under the hood for overnight, but no help to
> > > start today. I would appreciate any ideas or suggestions for this
> > > old beauty.
> > > Thank you.
> >
When those go bad, the engine will almost start with the key turning the
starter, but drop to run and it up and dies.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
D wrote:
>
> I know, I know. At my wit's end. Only used a short shot though. Figure the
> valves are prob. loose enough, a little more wouldn't hurt catastrophically.
>
> "FrankW" <fworm@mxznorpak.ca> wrote in message
> news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > use starter fluid for anything.
> >
> > D wrote:
> >
> > > Update to this problem.
> > > I got a can of starter fluid and tried it. The car seemed much more
> > > willing to start, but still no joy. It did huff a lot more, but didn't
> > > actually start. In my view, this points to more of a fuel problem than
> > > electrical? If there's concurrence on that, what in the fuel control
> > > system would be so subject to the cold temperature?
> > > Would appreciate additional thoughts. Thanks.
> > >
> > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > Hi all.
> > > Hope to find some suggestions here.
> > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > > miles, been excellent and still is.
> > > Problem is when the temp gets into the 30's, it will crank and
> > > crank, give a huff or two like it's trying to start, but no go. New
> > > plugs, wires, Oxy sensor, other things over the last couple years.
> > > Read a forum message somewhere on a similar problem and the fellow
> > > said he finally took off the ECM and heated it in the oven. Seemed
> > > it had a crack in the insulating material that let moisture get in
> > > and freeze. Or something like that.
> > > Possible related symptom; the engine, when running well, gives a
> > > 'miss' on acceleration at right around 2800 rpm and has for years.
> > > I've gone through most everything but am really suspect of the MAP
> > > sensor or the ECM now.
> > > I've had a lamp on under the hood for overnight, but no help to
> > > start today. I would appreciate any ideas or suggestions for this
> > > old beauty.
> > > Thank you.
> >
12-04-2003, 02:58 PM
#19
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
Do you have a ballast resistor like in the Cherokee?
When those go bad, the engine will almost start with the key turning the
starter, but drop to run and it up and dies.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
D wrote:
>
> I know, I know. At my wit's end. Only used a short shot though. Figure the
> valves are prob. loose enough, a little more wouldn't hurt catastrophically.
>
> "FrankW" <fworm@mxznorpak.ca> wrote in message
> news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > use starter fluid for anything.
> >
> > D wrote:
> >
> > > Update to this problem.
> > > I got a can of starter fluid and tried it. The car seemed much more
> > > willing to start, but still no joy. It did huff a lot more, but didn't
> > > actually start. In my view, this points to more of a fuel problem than
> > > electrical? If there's concurrence on that, what in the fuel control
> > > system would be so subject to the cold temperature?
> > > Would appreciate additional thoughts. Thanks.
> > >
> > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > Hi all.
> > > Hope to find some suggestions here.
> > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > > miles, been excellent and still is.
> > > Problem is when the temp gets into the 30's, it will crank and
> > > crank, give a huff or two like it's trying to start, but no go. New
> > > plugs, wires, Oxy sensor, other things over the last couple years.
> > > Read a forum message somewhere on a similar problem and the fellow
> > > said he finally took off the ECM and heated it in the oven. Seemed
> > > it had a crack in the insulating material that let moisture get in
> > > and freeze. Or something like that.
> > > Possible related symptom; the engine, when running well, gives a
> > > 'miss' on acceleration at right around 2800 rpm and has for years.
> > > I've gone through most everything but am really suspect of the MAP
> > > sensor or the ECM now.
> > > I've had a lamp on under the hood for overnight, but no help to
> > > start today. I would appreciate any ideas or suggestions for this
> > > old beauty.
> > > Thank you.
> >
When those go bad, the engine will almost start with the key turning the
starter, but drop to run and it up and dies.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
D wrote:
>
> I know, I know. At my wit's end. Only used a short shot though. Figure the
> valves are prob. loose enough, a little more wouldn't hurt catastrophically.
>
> "FrankW" <fworm@mxznorpak.ca> wrote in message
> news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > use starter fluid for anything.
> >
> > D wrote:
> >
> > > Update to this problem.
> > > I got a can of starter fluid and tried it. The car seemed much more
> > > willing to start, but still no joy. It did huff a lot more, but didn't
> > > actually start. In my view, this points to more of a fuel problem than
> > > electrical? If there's concurrence on that, what in the fuel control
> > > system would be so subject to the cold temperature?
> > > Would appreciate additional thoughts. Thanks.
> > >
> > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > Hi all.
> > > Hope to find some suggestions here.
> > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has 220,000+
> > > miles, been excellent and still is.
> > > Problem is when the temp gets into the 30's, it will crank and
> > > crank, give a huff or two like it's trying to start, but no go. New
> > > plugs, wires, Oxy sensor, other things over the last couple years.
> > > Read a forum message somewhere on a similar problem and the fellow
> > > said he finally took off the ECM and heated it in the oven. Seemed
> > > it had a crack in the insulating material that let moisture get in
> > > and freeze. Or something like that.
> > > Possible related symptom; the engine, when running well, gives a
> > > 'miss' on acceleration at right around 2800 rpm and has for years.
> > > I've gone through most everything but am really suspect of the MAP
> > > sensor or the ECM now.
> > > I've had a lamp on under the hood for overnight, but no help to
> > > start today. I would appreciate any ideas or suggestions for this
> > > old beauty.
> > > Thank you.
> >
12-04-2003, 03:09 PM
#20
Guest
Posts: n/a
Re: 93 Grand Cherokee-Won't Start in Cold
Thanks Mike. I think it does have a ballast, but again, it never gets close
to turning on it's own enough to let up on the key.
Also, I don't think the ballast resister would be affected by the cold like
this.
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3FCF91DA.D2302C0D@sympatico.ca...
> Do you have a ballast resistor like in the Cherokee?
>
> When those go bad, the engine will almost start with the key turning the
> starter, but drop to run and it up and dies.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> D wrote:
> >
> > I know, I know. At my wit's end. Only used a short shot though. Figure
the
> > valves are prob. loose enough, a little more wouldn't hurt
catastrophically.
> >
> > "FrankW" <fworm@mxznorpak.ca> wrote in message
> > news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > > use starter fluid for anything.
> > >
> > > D wrote:
> > >
> > > > Update to this problem.
> > > > I got a can of starter fluid and tried it. The car seemed much more
> > > > willing to start, but still no joy. It did huff a lot more, but
didn't
> > > > actually start. In my view, this points to more of a fuel problem
than
> > > > electrical? If there's concurrence on that, what in the fuel control
> > > > system would be so subject to the cold temperature?
> > > > Would appreciate additional thoughts. Thanks.
> > > >
> > > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > > Hi all.
> > > > Hope to find some suggestions here.
> > > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has
220,000+
> > > > miles, been excellent and still is.
> > > > Problem is when the temp gets into the 30's, it will crank and
> > > > crank, give a huff or two like it's trying to start, but no go.
New
> > > > plugs, wires, Oxy sensor, other things over the last couple
years.
> > > > Read a forum message somewhere on a similar problem and the
fellow
> > > > said he finally took off the ECM and heated it in the oven.
Seemed
> > > > it had a crack in the insulating material that let moisture get
in
> > > > and freeze. Or something like that.
> > > > Possible related symptom; the engine, when running well, gives a
> > > > 'miss' on acceleration at right around 2800 rpm and has for
years.
> > > > I've gone through most everything but am really suspect of the
MAP
> > > > sensor or the ECM now.
> > > > I've had a lamp on under the hood for overnight, but no help to
> > > > start today. I would appreciate any ideas or suggestions for
this
> > > > old beauty.
> > > > Thank you.
> > >
to turning on it's own enough to let up on the key.
Also, I don't think the ballast resister would be affected by the cold like
this.
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3FCF91DA.D2302C0D@sympatico.ca...
> Do you have a ballast resistor like in the Cherokee?
>
> When those go bad, the engine will almost start with the key turning the
> starter, but drop to run and it up and dies.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> D wrote:
> >
> > I know, I know. At my wit's end. Only used a short shot though. Figure
the
> > valves are prob. loose enough, a little more wouldn't hurt
catastrophically.
> >
> > "FrankW" <fworm@mxznorpak.ca> wrote in message
> > news:T-mdneiQYeaCE1KiRVn-uA@magma.ca...
> > > Man o Man, Other than an old diesel farm tractor, I wouldn't
> > > use starter fluid for anything.
> > >
> > > D wrote:
> > >
> > > > Update to this problem.
> > > > I got a can of starter fluid and tried it. The car seemed much more
> > > > willing to start, but still no joy. It did huff a lot more, but
didn't
> > > > actually start. In my view, this points to more of a fuel problem
than
> > > > electrical? If there's concurrence on that, what in the fuel control
> > > > system would be so subject to the cold temperature?
> > > > Would appreciate additional thoughts. Thanks.
> > > >
> > > > "D" <dpfer@r.com <mailto:dpfer@r.com>> wrote in message
> > > > news:OxKzb.105969$Eq1.40720@twister.rdc-kc.rr.com...
> > > > Hi all.
> > > > Hope to find some suggestions here.
> > > > 93 Grand Cherokee Laredo, 6 cyl, auto, 4wd, air etc. Has
220,000+
> > > > miles, been excellent and still is.
> > > > Problem is when the temp gets into the 30's, it will crank and
> > > > crank, give a huff or two like it's trying to start, but no go.
New
> > > > plugs, wires, Oxy sensor, other things over the last couple
years.
> > > > Read a forum message somewhere on a similar problem and the
fellow
> > > > said he finally took off the ECM and heated it in the oven.
Seemed
> > > > it had a crack in the insulating material that let moisture get
in
> > > > and freeze. Or something like that.
> > > > Possible related symptom; the engine, when running well, gives a
> > > > 'miss' on acceleration at right around 2800 rpm and has for
years.
> > > > I've gone through most everything but am really suspect of the
MAP
> > > > sensor or the ECM now.
> > > > I've had a lamp on under the hood for overnight, but no help to
> > > > start today. I would appreciate any ideas or suggestions for
this
> > > > old beauty.
> > > > Thank you.
> > >