Wrangler shuts down.

I have a 92 wrangler that after it runs alittle it starts to run rough and
then quits. You sit for alittle bit pump the gas like hell and it starts
right up, then goes for alittle bit. I have changed the fuel filter and just
changed the fuel pump this weekend. I have no idea what it can be, any
ideas? Thanks Dean.

"Dean" > wrote in message =
...
> I have a 92 wrangler that after it runs alittle it starts to run rough =
and=20
> then quits. You sit for alittle bit pump the gas like hell and it =
starts=20
> right up, then goes for alittle bit. I have changed the fuel filter =
and just=20
> changed the fuel pump this weekend. I have no idea what it can be, any =

> ideas? Thanks Dean.=20

it's EFI, right? Why do you 'pump the gas'?

Have you measured the fuel pressure?

Get a manual for your vehicle!
__
Steve
..

Dean did pass the time by typing:
> I have a 92 wrangler that after it runs alittle it starts to run rough and
> then quits. You sit for alittle bit pump the gas like hell and it starts
> right up, then goes for alittle bit. I have changed the fuel filter and just
> changed the fuel pump this weekend. I have no idea what it can be, any
> ideas? Thanks Dean.

ideas, lots. The right one.. dunno.

CPS sensor, ignition coil/plugs/wires. EFI or carb?

Ninety nine percent of the time it will be the Crankshaft Position
Sensor as Doug already suggested:
http://www.off-road.com/jeep/cheroke...tdcsensor.html
look like:
http://members.cox.net/wilsond/Fixes...tml#CPSdetails
God Bless America, ßill O|||||||O
http://www.billhughes.com/

Dean wrote:
>
> I have a 92 wrangler that after it runs alittle it starts to run rough and
> then quits. You sit for alittle bit pump the gas like hell and it starts
> right up, then goes for alittle bit. I have changed the fuel filter and just
> changed the fuel pump this weekend. I have no idea what it can be, any
> ideas? Thanks Dean.

Sorry about leaving out that info. Engine is a 4 liter EFI crank sensor was
change about a year ago. The jeep starts right up all the time,but try and
go for a mile or two them shuts right off. Let it sit for awhile pump the
gas and it starts.I know you should not have to pump the gas on a EFI but
this works when you have set for awhile. Thanks Dean.
"Dean" > wrote in message
...
>I have a 92 wrangler that after it runs alittle it starts to run rough and
>then quits. You sit for alittle bit pump the gas like hell and it starts
>right up, then goes for alittle bit. I have changed the fuel filter and
>just changed the fuel pump this weekend. I have no idea what it can be, any
>ideas? Thanks Dean.
>

Dean did pass the time by typing:
> Sorry about leaving out that info. Engine is a 4 liter EFI crank sensor was
> change about a year ago. The jeep starts right up all the time,but try and
> go for a mile or two them shuts right off. Let it sit for awhile pump the
> gas and it starts.I know you should not have to pump the gas on a EFI but
> this works when you have set for awhile. Thanks Dean.

Ok.. about a mile or two is when the engine usually gets warmed up and
switches out of the open loop mode. That brings into play the O2 sensor
and Crankshaft Position Sensor (the one in the distributor).

If you were driving an old Chevy I'd suspect the gas tank breather
was clogged (eventually the pump pulls such a vacuum it starves
for fuel.)

Any buildup of oil in the distributor base? I was having rough idle
due to the bushing getting worn out.

How old is your O2 sensor and check the cable that runs up past the engine
block, it sometimes gets wedged in the clip and burns through.

--
DougW

DougW did pass the time by typing:
> Dean did pass the time by typing:
>> Sorry about leaving out that info. Engine is a 4 liter EFI crank sensor was
>> change about a year ago. The jeep starts right up all the time,but try and
>> go for a mile or two them shuts right off. Let it sit for awhile pump the
>> gas and it starts.I know you should not have to pump the gas on a EFI but
>> this works when you have set for awhile. Thanks Dean.
>
> Ok.. about a mile or two is when the engine usually gets warmed up and
> switches out of the open loop mode. That brings into play the O2 sensor
> and Crankshaft Position Sensor (the one in the distributor).

er.. Camshaft position sensor... sorry, CPS =/= CPS and
I'm low on coffee.

Thanks DougW, So that sensor is in the distributor below the rotor?
"DougW" > wrote in message
news6%ye.24812$mC.4021@okepread07...
> DougW did pass the time by typing:
>> Dean did pass the time by typing:
>>> Sorry about leaving out that info. Engine is a 4 liter EFI crank sensor
>>> was
>>> change about a year ago. The jeep starts right up all the time,but try
>>> and
>>> go for a mile or two them shuts right off. Let it sit for awhile pump
>>> the
>>> gas and it starts.I know you should not have to pump the gas on a EFI
>>> but
>>> this works when you have set for awhile. Thanks Dean.
>>
>> Ok.. about a mile or two is when the engine usually gets warmed up and
>> switches out of the open loop mode. That brings into play the O2 sensor
>> and Crankshaft Position Sensor (the one in the distributor).
>
> er.. Camshaft position sensor... sorry, CPS =/= CPS and
> I'm low on coffee.
>
>
>

Dean did pass the time by typing:
> Thanks DougW, So that sensor is in the distributor below the rotor?

Yep.

If you are going to replace it the whole distributor
has to come out and there is a little pin at the bottom
you take out to remove the gear. Then the guts slide
out and you can replace the sensor.
http://revbeergoggles.com/stator/

Not too difficult providing you mark exactly where the
rotor is pointing before you remove it. Similar to
this.. http://revbeergoggles.com/distributor/

Any codes?
http://www.revbeergoggles.com/engine_codes.html

Keep in mind I'm working from a 93 ZJ 4.0. Should
be the same..

--
DougW