'93 GCherokee 6 Hard Start
 

Hi Guys,
I'm the one that has the 93 Grand Cherokee that wouldn't start when the
temperature got down into the 30's. It's a Grand old lady with 200K plus on
her with the 4.0 inline six engine.
You all gave me many hints to look at, but still no fix. Something came on
today that may isolate the problem a bit better. The temp. is up into the
50's where I usually have no problem starting. However the humidity is very
high. Like moisture coming out of the concrete kind of humidity. I have no
start now. While cranking, the gal doesn't even do a kick as if she wants to
go. Fuel doesn't seem to be the problem. I am using a jump to crank it at
full speed.
I'm suspecting some sensor or another that may have a flaw and is affected
by the humidity.
Any suspicions or ideas?
As always, thank you very much for your help.
Denny

Re: '93 GCherokee 6 Hard Start
 

D did pass the time by typing:
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus on
> her with the 4.0 inline six engine.
> You all gave me many hints to look at, but still no fix. Something came on
> today that may isolate the problem a bit better. The temp. is up into the
> 50's where I usually have no problem starting. However the humidity is very
> high. Like moisture coming out of the concrete kind of humidity. I have no
> start now. While cranking, the gal doesn't even do a kick as if she wants to
> go. Fuel doesn't seem to be the problem. I am using a jump to crank it at
> full speed.
> I'm suspecting some sensor or another that may have a flaw and is affected
> by the humidity.
> Any suspicions or ideas?
> As always, thank you very much for your help.
> Denny

Pull the engine codes.
http://members.cox.net/wilsond/engine_codes.html

Your problem could be anything from a corroded connector
to a bad CPS sensor to a poor battery connection or corroded
enging ground strap.

Start with the codes.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: '93 GCherokee 6 Hard Start
 

D did pass the time by typing:
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus on
> her with the 4.0 inline six engine.
> You all gave me many hints to look at, but still no fix. Something came on
> today that may isolate the problem a bit better. The temp. is up into the
> 50's where I usually have no problem starting. However the humidity is very
> high. Like moisture coming out of the concrete kind of humidity. I have no
> start now. While cranking, the gal doesn't even do a kick as if she wants to
> go. Fuel doesn't seem to be the problem. I am using a jump to crank it at
> full speed.
> I'm suspecting some sensor or another that may have a flaw and is affected
> by the humidity.
> Any suspicions or ideas?
> As always, thank you very much for your help.
> Denny

Pull the engine codes.
http://members.cox.net/wilsond/engine_codes.html

Your problem could be anything from a corroded connector
to a bad CPS sensor to a poor battery connection or corroded
enging ground strap.

Start with the codes.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: '93 GCherokee 6 Hard Start
 

D did pass the time by typing:
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus on
> her with the 4.0 inline six engine.
> You all gave me many hints to look at, but still no fix. Something came on
> today that may isolate the problem a bit better. The temp. is up into the
> 50's where I usually have no problem starting. However the humidity is very
> high. Like moisture coming out of the concrete kind of humidity. I have no
> start now. While cranking, the gal doesn't even do a kick as if she wants to
> go. Fuel doesn't seem to be the problem. I am using a jump to crank it at
> full speed.
> I'm suspecting some sensor or another that may have a flaw and is affected
> by the humidity.
> Any suspicions or ideas?
> As always, thank you very much for your help.
> Denny

Pull the engine codes.
http://members.cox.net/wilsond/engine_codes.html

Your problem could be anything from a corroded connector
to a bad CPS sensor to a poor battery connection or corroded
enging ground strap.

Start with the codes.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: '93 GCherokee 6 Hard Start
 

Thanks Doug. Yeah, I guess this does sound most logical.
Codes I get 12, 17, 34, 55

"DougW" <post.replies@invalid.address> wrote in message
news:6Q%Ib.42672$a44.23571@okepread04...
> D did pass the time by typing:
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> > her with the 4.0 inline six engine.
> > You all gave me many hints to look at, but still no fix. Something came
on
> > today that may isolate the problem a bit better. The temp. is up into
the
> > 50's where I usually have no problem starting. However the humidity is
very
> > high. Like moisture coming out of the concrete kind of humidity. I have
no
> > start now. While cranking, the gal doesn't even do a kick as if she
wants to
> > go. Fuel doesn't seem to be the problem. I am using a jump to crank it
at
> > full speed.
> > I'm suspecting some sensor or another that may have a flaw and is
affected
> > by the humidity.
> > Any suspicions or ideas?
> > As always, thank you very much for your help.
> > Denny
>
> Pull the engine codes.
> http://members.cox.net/wilsond/engine_codes.html
>
> Your problem could be anything from a corroded connector
> to a bad CPS sensor to a poor battery connection or corroded
> enging ground strap.
>
> Start with the codes.
>
> --
> -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
>
>
>

Re: '93 GCherokee 6 Hard Start
 

Thanks Doug. Yeah, I guess this does sound most logical.
Codes I get 12, 17, 34, 55

"DougW" <post.replies@invalid.address> wrote in message
news:6Q%Ib.42672$a44.23571@okepread04...
> D did pass the time by typing:
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> > her with the 4.0 inline six engine.
> > You all gave me many hints to look at, but still no fix. Something came
on
> > today that may isolate the problem a bit better. The temp. is up into
the
> > 50's where I usually have no problem starting. However the humidity is
very
> > high. Like moisture coming out of the concrete kind of humidity. I have
no
> > start now. While cranking, the gal doesn't even do a kick as if she
wants to
> > go. Fuel doesn't seem to be the problem. I am using a jump to crank it
at
> > full speed.
> > I'm suspecting some sensor or another that may have a flaw and is
affected
> > by the humidity.
> > Any suspicions or ideas?
> > As always, thank you very much for your help.
> > Denny
>
> Pull the engine codes.
> http://members.cox.net/wilsond/engine_codes.html
>
> Your problem could be anything from a corroded connector
> to a bad CPS sensor to a poor battery connection or corroded
> enging ground strap.
>
> Start with the codes.
>
> --
> -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
>
>
>

Re: '93 GCherokee 6 Hard Start
 

Thanks Doug. Yeah, I guess this does sound most logical.
Codes I get 12, 17, 34, 55

"DougW" <post.replies@invalid.address> wrote in message
news:6Q%Ib.42672$a44.23571@okepread04...
> D did pass the time by typing:
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> > her with the 4.0 inline six engine.
> > You all gave me many hints to look at, but still no fix. Something came
on
> > today that may isolate the problem a bit better. The temp. is up into
the
> > 50's where I usually have no problem starting. However the humidity is
very
> > high. Like moisture coming out of the concrete kind of humidity. I have
no
> > start now. While cranking, the gal doesn't even do a kick as if she
wants to
> > go. Fuel doesn't seem to be the problem. I am using a jump to crank it
at
> > full speed.
> > I'm suspecting some sensor or another that may have a flaw and is
affected
> > by the humidity.
> > Any suspicions or ideas?
> > As always, thank you very much for your help.
> > Denny
>
> Pull the engine codes.
> http://members.cox.net/wilsond/engine_codes.html
>
> Your problem could be anything from a corroded connector
> to a bad CPS sensor to a poor battery connection or corroded
> enging ground strap.
>
> Start with the codes.
>
> --
> -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
>
>
>

Re: '93 GCherokee 6 Hard Start
 

D did pass the time by typing:
> Thanks Doug. Yeah, I guess this does sound most logical.
> Codes I get 12, 17, 34, 55

12 - ignore it for now. It just indicates that sometime in the
last 50 starts you had the battery disconnected.

17 - Engine did not reach operating temperature within
acceptable limits. Engine does not reach 20º F. within
5 minutes with a vehicle speed signal.

How's your engine temp? This can be caused by a failed
thermostat valve, dirty connector on the temp sensor, or
a bad temp sensor.
http://members.cox.net/wilsond/Fixes...-coolant-level

34 - An open or shorted condition detected in the Speed Control
vacuum or vent solenoid circuits. Speed control switch input
below the minimum acceptable voltage.

Never ran into this code before. Related to the cruise control circuit.
You may get problems caused by vacuum leaks. But that would be more
along the line of rough idle than no-start.

55 - end of codes

Re: '93 GCherokee 6 Hard Start
 

D did pass the time by typing:
> Thanks Doug. Yeah, I guess this does sound most logical.
> Codes I get 12, 17, 34, 55

12 - ignore it for now. It just indicates that sometime in the
last 50 starts you had the battery disconnected.

17 - Engine did not reach operating temperature within
acceptable limits. Engine does not reach 20º F. within
5 minutes with a vehicle speed signal.

How's your engine temp? This can be caused by a failed
thermostat valve, dirty connector on the temp sensor, or
a bad temp sensor.
http://members.cox.net/wilsond/Fixes...-coolant-level

34 - An open or shorted condition detected in the Speed Control
vacuum or vent solenoid circuits. Speed control switch input
below the minimum acceptable voltage.

Never ran into this code before. Related to the cruise control circuit.
You may get problems caused by vacuum leaks. But that would be more
along the line of rough idle than no-start.

55 - end of codes

Re: '93 GCherokee 6 Hard Start
 

D did pass the time by typing:
> Thanks Doug. Yeah, I guess this does sound most logical.
> Codes I get 12, 17, 34, 55

12 - ignore it for now. It just indicates that sometime in the
last 50 starts you had the battery disconnected.

17 - Engine did not reach operating temperature within
acceptable limits. Engine does not reach 20º F. within
5 minutes with a vehicle speed signal.

How's your engine temp? This can be caused by a failed
thermostat valve, dirty connector on the temp sensor, or
a bad temp sensor.
http://members.cox.net/wilsond/Fixes...-coolant-level

34 - An open or shorted condition detected in the Speed Control
vacuum or vent solenoid circuits. Speed control switch input
below the minimum acceptable voltage.

Never ran into this code before. Related to the cruise control circuit.
You may get problems caused by vacuum leaks. But that would be more
along the line of rough idle than no-start.

55 - end of codes