Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Casper wrote:
> L.W. ------ III (ßill) wrote:
>
>>You have ten years, a hundred thousand miles, you need a new fuel pump.
>>God Bless America, Bill O|||||||O
>>mailto:-------------------- http://www.----------.com/
>
> As for fuel pump, why? Just based on mileage/years?

Yes. Everything manufactured has a design life and for OEM Cherokee
fuel pumps it seems to be around 100,000 miles. Be happy that yours
fails to start, mine gave up the ghost on a section of highway running
through a crack neighborhood.


> I don't believe this is the issue, so I'd like to hear your reasoning on why the fuel
> pump.

Yossarian, meet Snowden. Snowden, Yossarian. Yossarian here will be
dressing the wound on your leg.

In your first post you wrote:

> Often if you keep turning the ignition on and off until you
> hear the fuel pump priming(?), then on the next crank attempt, it
> starts, but not consistantly.

There's the clue you should be paying attention to, not being lead away
by the red herrings of the battery cables (if it cranks you're already
carrying more current than the ignition will ever need) or the blinking
security light. If all the electrical accessories are working okay then
grounds are low on your list of things to check.

Based on my experience with my own Cherokee I'd suspect:

1. fuel filter
2. fuel pump
3. fuel sender in the tank.

In my case all three gave up, in that order, within a few months of each
other.

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Snow did pass the time by typing:
> I only have third party keys for my 93 ZJ, the keys are just regular keys
> they are not like the new anti-theft keys.
> I would be looking at the CPS, fuel filter and engine ground strap.

Yep. The 93 did not use a chipped key. Just the IR fob.

The only reason the alarm could go off while using the key in the
drivers (or tailgate) is that the disarm switch has died. There is a
mechanical switch attached to the back end of the key core.

If the horn ain't beeping the alarm/engine kill/ isn't active.

> "Casper" wrote ...
>> Is there a way to turn off the alarm to test out the alarm system as
>> being suspect? Perhaps a fuse in the panel and/or a possible second one
>> in the factory installed systems? The alarm works fine if you use the
>> original key or electronic key, but 3rd-party made keys can
>> occasionally set of the alarm from the door key hole. The alarm never
>> goes off otherwise.
>>
>> As a side note, I only have one electronic key, and no Jeep dealer
>> service deparment could get another key attuned to the system
>> simultaneously with the existing one. Only one or the other can be
>> programmed at a time.

You can also put the alarm in test mode.
With the driver door open, Turn the ignition
off-acc-off-acc-off-acc

Now every time you open/close a sensor the horn will beep.
Test all the doors and the hood
Turn the ignition on and it will beep
Turn the key in the door (disarm) and it will beep
Same thing for the tailgate (the other disarm switch)
etc..

To disable test mode just turn the ignition to RUN
then use the remote to arm/disarm the system.


--
DougW

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Snow did pass the time by typing:
> I only have third party keys for my 93 ZJ, the keys are just regular keys
> they are not like the new anti-theft keys.
> I would be looking at the CPS, fuel filter and engine ground strap.

Yep. The 93 did not use a chipped key. Just the IR fob.

The only reason the alarm could go off while using the key in the
drivers (or tailgate) is that the disarm switch has died. There is a
mechanical switch attached to the back end of the key core.

If the horn ain't beeping the alarm/engine kill/ isn't active.

> "Casper" wrote ...
>> Is there a way to turn off the alarm to test out the alarm system as
>> being suspect? Perhaps a fuse in the panel and/or a possible second one
>> in the factory installed systems? The alarm works fine if you use the
>> original key or electronic key, but 3rd-party made keys can
>> occasionally set of the alarm from the door key hole. The alarm never
>> goes off otherwise.
>>
>> As a side note, I only have one electronic key, and no Jeep dealer
>> service deparment could get another key attuned to the system
>> simultaneously with the existing one. Only one or the other can be
>> programmed at a time.

You can also put the alarm in test mode.
With the driver door open, Turn the ignition
off-acc-off-acc-off-acc

Now every time you open/close a sensor the horn will beep.
Test all the doors and the hood
Turn the ignition on and it will beep
Turn the key in the door (disarm) and it will beep
Same thing for the tailgate (the other disarm switch)
etc..

To disable test mode just turn the ignition to RUN
then use the remote to arm/disarm the system.


--
DougW

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Snow did pass the time by typing:
> I only have third party keys for my 93 ZJ, the keys are just regular keys
> they are not like the new anti-theft keys.
> I would be looking at the CPS, fuel filter and engine ground strap.

Yep. The 93 did not use a chipped key. Just the IR fob.

The only reason the alarm could go off while using the key in the
drivers (or tailgate) is that the disarm switch has died. There is a
mechanical switch attached to the back end of the key core.

If the horn ain't beeping the alarm/engine kill/ isn't active.

> "Casper" wrote ...
>> Is there a way to turn off the alarm to test out the alarm system as
>> being suspect? Perhaps a fuse in the panel and/or a possible second one
>> in the factory installed systems? The alarm works fine if you use the
>> original key or electronic key, but 3rd-party made keys can
>> occasionally set of the alarm from the door key hole. The alarm never
>> goes off otherwise.
>>
>> As a side note, I only have one electronic key, and no Jeep dealer
>> service deparment could get another key attuned to the system
>> simultaneously with the existing one. Only one or the other can be
>> programmed at a time.

You can also put the alarm in test mode.
With the driver door open, Turn the ignition
off-acc-off-acc-off-acc

Now every time you open/close a sensor the horn will beep.
Test all the doors and the hood
Turn the ignition on and it will beep
Turn the key in the door (disarm) and it will beep
Same thing for the tailgate (the other disarm switch)
etc..

To disable test mode just turn the ignition to RUN
then use the remote to arm/disarm the system.


--
DougW

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Snow did pass the time by typing:
> I only have third party keys for my 93 ZJ, the keys are just regular keys
> they are not like the new anti-theft keys.
> I would be looking at the CPS, fuel filter and engine ground strap.

Yep. The 93 did not use a chipped key. Just the IR fob.

The only reason the alarm could go off while using the key in the
drivers (or tailgate) is that the disarm switch has died. There is a
mechanical switch attached to the back end of the key core.

If the horn ain't beeping the alarm/engine kill/ isn't active.

> "Casper" wrote ...
>> Is there a way to turn off the alarm to test out the alarm system as
>> being suspect? Perhaps a fuse in the panel and/or a possible second one
>> in the factory installed systems? The alarm works fine if you use the
>> original key or electronic key, but 3rd-party made keys can
>> occasionally set of the alarm from the door key hole. The alarm never
>> goes off otherwise.
>>
>> As a side note, I only have one electronic key, and no Jeep dealer
>> service deparment could get another key attuned to the system
>> simultaneously with the existing one. Only one or the other can be
>> programmed at a time.

You can also put the alarm in test mode.
With the driver door open, Turn the ignition
off-acc-off-acc-off-acc

Now every time you open/close a sensor the horn will beep.
Test all the doors and the hood
Turn the ignition on and it will beep
Turn the key in the door (disarm) and it will beep
Same thing for the tailgate (the other disarm switch)
etc..

To disable test mode just turn the ignition to RUN
then use the remote to arm/disarm the system.


--
DougW

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Add the relay to that for me.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> Yes. Everything manufactured has a design life and for OEM Cherokee
> fuel pumps it seems to be around 100,000 miles. Be happy that yours
> fails to start, mine gave up the ghost on a section of highway running
> through a crack neighborhood.
>
> Yossarian, meet Snowden. Snowden, Yossarian. Yossarian here will be
> dressing the wound on your leg.
>
> In your first post you wrote:
>
> > Often if you keep turning the ignition on and off until you
> > hear the fuel pump priming(?), then on the next crank attempt, it
> > starts, but not consistantly.
>
> There's the clue you should be paying attention to, not being lead away
> by the red herrings of the battery cables (if it cranks you're already
> carrying more current than the ignition will ever need) or the blinking
> security light. If all the electrical accessories are working okay then
> grounds are low on your list of things to check.
>
> Based on my experience with my own Cherokee I'd suspect:
>
> 1. fuel filter
> 2. fuel pump
> 3. fuel sender in the tank.
>
> In my case all three gave up, in that order, within a few months of each
> other.

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Add the relay to that for me.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> Yes. Everything manufactured has a design life and for OEM Cherokee
> fuel pumps it seems to be around 100,000 miles. Be happy that yours
> fails to start, mine gave up the ghost on a section of highway running
> through a crack neighborhood.
>
> Yossarian, meet Snowden. Snowden, Yossarian. Yossarian here will be
> dressing the wound on your leg.
>
> In your first post you wrote:
>
> > Often if you keep turning the ignition on and off until you
> > hear the fuel pump priming(?), then on the next crank attempt, it
> > starts, but not consistantly.
>
> There's the clue you should be paying attention to, not being lead away
> by the red herrings of the battery cables (if it cranks you're already
> carrying more current than the ignition will ever need) or the blinking
> security light. If all the electrical accessories are working okay then
> grounds are low on your list of things to check.
>
> Based on my experience with my own Cherokee I'd suspect:
>
> 1. fuel filter
> 2. fuel pump
> 3. fuel sender in the tank.
>
> In my case all three gave up, in that order, within a few months of each
> other.

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Add the relay to that for me.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> Yes. Everything manufactured has a design life and for OEM Cherokee
> fuel pumps it seems to be around 100,000 miles. Be happy that yours
> fails to start, mine gave up the ghost on a section of highway running
> through a crack neighborhood.
>
> Yossarian, meet Snowden. Snowden, Yossarian. Yossarian here will be
> dressing the wound on your leg.
>
> In your first post you wrote:
>
> > Often if you keep turning the ignition on and off until you
> > hear the fuel pump priming(?), then on the next crank attempt, it
> > starts, but not consistantly.
>
> There's the clue you should be paying attention to, not being lead away
> by the red herrings of the battery cables (if it cranks you're already
> carrying more current than the ignition will ever need) or the blinking
> security light. If all the electrical accessories are working okay then
> grounds are low on your list of things to check.
>
> Based on my experience with my own Cherokee I'd suspect:
>
> 1. fuel filter
> 2. fuel pump
> 3. fuel sender in the tank.
>
> In my case all three gave up, in that order, within a few months of each
> other.

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

Add the relay to that for me.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> Yes. Everything manufactured has a design life and for OEM Cherokee
> fuel pumps it seems to be around 100,000 miles. Be happy that yours
> fails to start, mine gave up the ghost on a section of highway running
> through a crack neighborhood.
>
> Yossarian, meet Snowden. Snowden, Yossarian. Yossarian here will be
> dressing the wound on your leg.
>
> In your first post you wrote:
>
> > Often if you keep turning the ignition on and off until you
> > hear the fuel pump priming(?), then on the next crank attempt, it
> > starts, but not consistantly.
>
> There's the clue you should be paying attention to, not being lead away
> by the red herrings of the battery cables (if it cranks you're already
> carrying more current than the ignition will ever need) or the blinking
> security light. If all the electrical accessories are working okay then
> grounds are low on your list of things to check.
>
> Based on my experience with my own Cherokee I'd suspect:
>
> 1. fuel filter
> 2. fuel pump
> 3. fuel sender in the tank.
>
> In my case all three gave up, in that order, within a few months of each
> other.

Re: 93 Jeep Grand Cherokee Cranks, But No Start
 

recheck the battery cables make sure there is new clean lead showing on them
were they contact the battery posts before anything else is done

Mike Romain wrote:

> Because the idiot light comes on, I would be suspecting the alarm first.
>
> Second I would be suspecting the body ground is dirty or has failed
> because of the 'sometimes' factor. The body can steal grounds through
> things like the gas pedal cable and brake pedal, but it is not
> consistent.
>
> Some 4.0 engines have a mesh strap from the rear of the head to the
> firewall and/or from the engine to the frame across an engine mount, but
> some Jeeps use a negative cable from the battery to the fender for a
> ground.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Casper wrote:
> >
> > My 1993 Jeep Grand Cherokee recently started having starting issues. At
> > first it would start after 2-3 tries, but now it continually takes
> > longer and longer to get it to turn over. First I thought it was the
> > battery (weak or being drained), but after a full recharge and
> > replacment, the problem persists. Cables appear fine. Jump-starting
> > will help if the battery is weak, but it still takes multiple tries to
> > get it to turn over. This morning, it took 20 minutes and at least 25
> > tries to get it to go from cranking to actually starting. Sometimes
> > during cranking the security light flashes on the dash. Sometimes you
> > hear what sounds like a solenoid(?) clicking when you turn the
> > ignition. Often if you keep turning the ignition on and off until you
> > hear the fuel pump priming(?), then on the next crank attempt, it
> > starts, but not consistantly. I'm suspicious of a short somewhere. Fuel
> > solenoid? Security system? Anyone have any ideas or suggestions?