Shawn Bennett

Sounds like your not getting fuel. The ecm primes the fuel system when you
first turn the key on (runs the pump for 2 sec) then shuts off. once the
engine starts and is running it turns the pump on continously once it "sees"
oil pressure, and various other signal from other sensors. the engine can
run for a few seconds on this initial "prime", then shut off.
one problem i have come across on the same vehicle as yours was a faulty
ignition switch not supplying power to the main relay causing the vehicle to
stall after start-up.
are all of the guages/lights on the dash functioning when it stalls? as
suggested , check ecm codes. what you might try is to get somone else to try
starting it
while listening for the fuel pump. you can do this by putting your ear near
the fuel tank and listening for a hissing/humming sound or by removing the
fuel filler cap and listening there. see what happens first, either the
engine stalls and the pump runs for a second after or the pump stops and the
engine stalls.

Shawn

James Nipper

My 18 year old son did that trick about ignition on / ignition off 3
times to get the error code. It came up with P1685. We looked this
up, and the culprit is


The engine controller has received an invalid key from the SKIM.


SKIM is the Sentry Key Immobilizer Module. As I had commented in my
post, it was acting just like it did one time right after I bought the car 4
years ago, when I had a regular key (no chip) made and tried to start the
car.

For now, I am hoping that it was just a minor glitch, and will not happen
again.

I do thank everyone, including Bill, Doug, and Shawn for their helpful info
!! Getting the code was a good tool.


--James--

James Nipper

My 18 year old son did that trick about ignition on / ignition off 3
times to get the error code. It came up with P1685. We looked this
up, and the culprit is


The engine controller has received an invalid key from the SKIM.


SKIM is the Sentry Key Immobilizer Module. As I had commented in my
post, it was acting just like it did one time right after I bought the car 4
years ago, when I had a regular key (no chip) made and tried to start the
car.

For now, I am hoping that it was just a minor glitch, and will not happen
again.

I do thank everyone, including Bill, Doug, and Shawn for their helpful info
!! Getting the code was a good tool.


--James--

James Nipper

My 18 year old son did that trick about ignition on / ignition off 3
times to get the error code. It came up with P1685. We looked this
up, and the culprit is


The engine controller has received an invalid key from the SKIM.


SKIM is the Sentry Key Immobilizer Module. As I had commented in my
post, it was acting just like it did one time right after I bought the car 4
years ago, when I had a regular key (no chip) made and tried to start the
car.

For now, I am hoping that it was just a minor glitch, and will not happen
again.

I do thank everyone, including Bill, Doug, and Shawn for their helpful info
!! Getting the code was a good tool.


--James--

James Nipper

My 18 year old son did that trick about ignition on / ignition off 3
times to get the error code. It came up with P1685. We looked this
up, and the culprit is


The engine controller has received an invalid key from the SKIM.


SKIM is the Sentry Key Immobilizer Module. As I had commented in my
post, it was acting just like it did one time right after I bought the car 4
years ago, when I had a regular key (no chip) made and tried to start the
car.

For now, I am hoping that it was just a minor glitch, and will not happen
again.

I do thank everyone, including Bill, Doug, and Shawn for their helpful info
!! Getting the code was a good tool.


--James--

mic canic

the wj's have a issue with the fuel pumps bleding off fuel pressure and it does
exactly what you state there waas a tsb on this issue
see your local dealer

James Nipper wrote:

> I have a 2000 Jeep Grand Cherokee Limited, 76,000 miles. I had a weird
> problem today. The engine would start very quickly with no hesitation,
> run for about 3-5 seconds, and then abruptly shut off. After about 2-3
> starts/stops like this, I gave it some gas immediately after starting, to
> see if I could goose it and make it keep going. No luck.
>
> I am NOT a mechanic, but my first thought was some type of fuel problem.
> Maybe the gas line filter.
>
> It then occured to me that the engine was acting **exactly** how the Jeep
> will act if you use a non-chip (programmed) ignition key to start it. I
> had done this one time (not aware of the chip need in the spare key) and
> the engine acted the same way -- quick start/ run 3-5 seconds/ shut off.
>
> This happened today. I have now started it several times and it is
> running without a problem.
>
> I would appreciate any comments on what any of you guys think this might
> have been, and if I am likely to have the same problem tomorrow, etc.
>
> Thanks for any help !!
>
> --James---

mic canic

the wj's have a issue with the fuel pumps bleding off fuel pressure and it does
exactly what you state there waas a tsb on this issue
see your local dealer

James Nipper wrote:

> I have a 2000 Jeep Grand Cherokee Limited, 76,000 miles. I had a weird
> problem today. The engine would start very quickly with no hesitation,
> run for about 3-5 seconds, and then abruptly shut off. After about 2-3
> starts/stops like this, I gave it some gas immediately after starting, to
> see if I could goose it and make it keep going. No luck.
>
> I am NOT a mechanic, but my first thought was some type of fuel problem.
> Maybe the gas line filter.
>
> It then occured to me that the engine was acting **exactly** how the Jeep
> will act if you use a non-chip (programmed) ignition key to start it. I
> had done this one time (not aware of the chip need in the spare key) and
> the engine acted the same way -- quick start/ run 3-5 seconds/ shut off.
>
> This happened today. I have now started it several times and it is
> running without a problem.
>
> I would appreciate any comments on what any of you guys think this might
> have been, and if I am likely to have the same problem tomorrow, etc.
>
> Thanks for any help !!
>
> --James---

mic canic

the wj's have a issue with the fuel pumps bleding off fuel pressure and it does
exactly what you state there waas a tsb on this issue
see your local dealer

James Nipper wrote:

> I have a 2000 Jeep Grand Cherokee Limited, 76,000 miles. I had a weird
> problem today. The engine would start very quickly with no hesitation,
> run for about 3-5 seconds, and then abruptly shut off. After about 2-3
> starts/stops like this, I gave it some gas immediately after starting, to
> see if I could goose it and make it keep going. No luck.
>
> I am NOT a mechanic, but my first thought was some type of fuel problem.
> Maybe the gas line filter.
>
> It then occured to me that the engine was acting **exactly** how the Jeep
> will act if you use a non-chip (programmed) ignition key to start it. I
> had done this one time (not aware of the chip need in the spare key) and
> the engine acted the same way -- quick start/ run 3-5 seconds/ shut off.
>
> This happened today. I have now started it several times and it is
> running without a problem.
>
> I would appreciate any comments on what any of you guys think this might
> have been, and if I am likely to have the same problem tomorrow, etc.
>
> Thanks for any help !!
>
> --James---

mic canic

the wj's have a issue with the fuel pumps bleding off fuel pressure and it does
exactly what you state there waas a tsb on this issue
see your local dealer

James Nipper wrote:

> I have a 2000 Jeep Grand Cherokee Limited, 76,000 miles. I had a weird
> problem today. The engine would start very quickly with no hesitation,
> run for about 3-5 seconds, and then abruptly shut off. After about 2-3
> starts/stops like this, I gave it some gas immediately after starting, to
> see if I could goose it and make it keep going. No luck.
>
> I am NOT a mechanic, but my first thought was some type of fuel problem.
> Maybe the gas line filter.
>
> It then occured to me that the engine was acting **exactly** how the Jeep
> will act if you use a non-chip (programmed) ignition key to start it. I
> had done this one time (not aware of the chip need in the spare key) and
> the engine acted the same way -- quick start/ run 3-5 seconds/ shut off.
>
> This happened today. I have now started it several times and it is
> running without a problem.
>
> I would appreciate any comments on what any of you guys think this might
> have been, and if I am likely to have the same problem tomorrow, etc.
>
> Thanks for any help !!
>
> --James---

Chad Fraker

This just happened to my wife's 99 Limited (73K mi) on Friday. I would
believe the fuel pressure thoughts, the CPS was just replaced.


"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:QpydnV3iaeSeswDd4p2dnA@comcast.com...
>
>
> I have a 2000 Jeep Grand Cherokee Limited, 76,000 miles. I had a weird
> problem today. The engine would start very quickly with no hesitation,
> run for about 3-5 seconds, and then abruptly shut off. After about 2-3
> starts/stops like this, I gave it some gas immediately after starting, to
> see if I could goose it and make it keep going. No luck.
>
> I am NOT a mechanic, but my first thought was some type of fuel problem.
> Maybe the gas line filter.
>
> It then occured to me that the engine was acting **exactly** how the
Jeep
> will act if you use a non-chip (programmed) ignition key to start it.
I
> had done this one time (not aware of the chip need in the spare key) and
> the engine acted the same way -- quick start/ run 3-5 seconds/ shut off.
>
> This happened today. I have now started it several times and it is
> running without a problem.
>
> I would appreciate any comments on what any of you guys think this might
> have been, and if I am likely to have the same problem tomorrow, etc.
>
> Thanks for any help !!
>
> --James---
>