2002 Grand Cherokee Hard to Start
#1
Guest
Posts: n/a
2002 Grand Cherokee Hard to Start
I've seen this message posted several times, but no concrete
resolution, so thought I'd post to see if anyone has any other ideas.
I have a 2002 JGC, which is hard to start when the engine is warm
(after a 45 minute cool down or so). It seems to start fine first
thing in the morning or when the engine is hot (shut off for only a few
minutes). When I experience the problem however, it takes between 7-15
seconds to start, and I can sometimes smell fuel outside the vehicle
(no drips anywhere).
I've had the car to a dealer who has:
- Replaced the fuel pump.
- Cleaned throttle body/valves.
- Replaced the fuel pressure regulator.
- Replaced the computer.
- Performed hours of other diagnostics.
I still have the problem. At this point, I'm assuming the pressure
test is testing OK (so maybe not injector related). Any other ideas?
resolution, so thought I'd post to see if anyone has any other ideas.
I have a 2002 JGC, which is hard to start when the engine is warm
(after a 45 minute cool down or so). It seems to start fine first
thing in the morning or when the engine is hot (shut off for only a few
minutes). When I experience the problem however, it takes between 7-15
seconds to start, and I can sometimes smell fuel outside the vehicle
(no drips anywhere).
I've had the car to a dealer who has:
- Replaced the fuel pump.
- Cleaned throttle body/valves.
- Replaced the fuel pressure regulator.
- Replaced the computer.
- Performed hours of other diagnostics.
I still have the problem. At this point, I'm assuming the pressure
test is testing OK (so maybe not injector related). Any other ideas?
#5
Guest
Posts: n/a
Re: 2002 Grand Cherokee Hard to Start
Most likely a leaking injector causing a very rich mixture, and a hard
start. I have seen them seep enough fuel to cause this problem, yet
still be within the factory 'fuel system leak down' spec.
On 13 Oct 2006 07:14:16 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>I've seen this message posted several times, but no concrete
>resolution, so thought I'd post to see if anyone has any other ideas.
>
>I have a 2002 JGC, which is hard to start when the engine is warm
>(after a 45 minute cool down or so). It seems to start fine first
>thing in the morning or when the engine is hot (shut off for only a few
>minutes). When I experience the problem however, it takes between 7-15
>seconds to start, and I can sometimes smell fuel outside the vehicle
>(no drips anywhere).
>
>I've had the car to a dealer who has:
>- Replaced the fuel pump.
>- Cleaned throttle body/valves.
>- Replaced the fuel pressure regulator.
>- Replaced the computer.
>- Performed hours of other diagnostics.
>
>I still have the problem. At this point, I'm assuming the pressure
>test is testing OK (so maybe not injector related). Any other ideas?
start. I have seen them seep enough fuel to cause this problem, yet
still be within the factory 'fuel system leak down' spec.
On 13 Oct 2006 07:14:16 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>I've seen this message posted several times, but no concrete
>resolution, so thought I'd post to see if anyone has any other ideas.
>
>I have a 2002 JGC, which is hard to start when the engine is warm
>(after a 45 minute cool down or so). It seems to start fine first
>thing in the morning or when the engine is hot (shut off for only a few
>minutes). When I experience the problem however, it takes between 7-15
>seconds to start, and I can sometimes smell fuel outside the vehicle
>(no drips anywhere).
>
>I've had the car to a dealer who has:
>- Replaced the fuel pump.
>- Cleaned throttle body/valves.
>- Replaced the fuel pressure regulator.
>- Replaced the computer.
>- Performed hours of other diagnostics.
>
>I still have the problem. At this point, I'm assuming the pressure
>test is testing OK (so maybe not injector related). Any other ideas?
#6
Guest
Posts: n/a
Re: 2002 Grand Cherokee Hard to Start
Most likely a leaking injector causing a very rich mixture, and a hard
start. I have seen them seep enough fuel to cause this problem, yet
still be within the factory 'fuel system leak down' spec.
On 13 Oct 2006 07:14:16 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>I've seen this message posted several times, but no concrete
>resolution, so thought I'd post to see if anyone has any other ideas.
>
>I have a 2002 JGC, which is hard to start when the engine is warm
>(after a 45 minute cool down or so). It seems to start fine first
>thing in the morning or when the engine is hot (shut off for only a few
>minutes). When I experience the problem however, it takes between 7-15
>seconds to start, and I can sometimes smell fuel outside the vehicle
>(no drips anywhere).
>
>I've had the car to a dealer who has:
>- Replaced the fuel pump.
>- Cleaned throttle body/valves.
>- Replaced the fuel pressure regulator.
>- Replaced the computer.
>- Performed hours of other diagnostics.
>
>I still have the problem. At this point, I'm assuming the pressure
>test is testing OK (so maybe not injector related). Any other ideas?
start. I have seen them seep enough fuel to cause this problem, yet
still be within the factory 'fuel system leak down' spec.
On 13 Oct 2006 07:14:16 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>I've seen this message posted several times, but no concrete
>resolution, so thought I'd post to see if anyone has any other ideas.
>
>I have a 2002 JGC, which is hard to start when the engine is warm
>(after a 45 minute cool down or so). It seems to start fine first
>thing in the morning or when the engine is hot (shut off for only a few
>minutes). When I experience the problem however, it takes between 7-15
>seconds to start, and I can sometimes smell fuel outside the vehicle
>(no drips anywhere).
>
>I've had the car to a dealer who has:
>- Replaced the fuel pump.
>- Cleaned throttle body/valves.
>- Replaced the fuel pressure regulator.
>- Replaced the computer.
>- Performed hours of other diagnostics.
>
>I still have the problem. At this point, I'm assuming the pressure
>test is testing OK (so maybe not injector related). Any other ideas?
#7
Guest
Posts: n/a
Re: 2002 Grand Cherokee Hard to Start
Most likely a leaking injector causing a very rich mixture, and a hard
start. I have seen them seep enough fuel to cause this problem, yet
still be within the factory 'fuel system leak down' spec.
On 13 Oct 2006 07:14:16 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>I've seen this message posted several times, but no concrete
>resolution, so thought I'd post to see if anyone has any other ideas.
>
>I have a 2002 JGC, which is hard to start when the engine is warm
>(after a 45 minute cool down or so). It seems to start fine first
>thing in the morning or when the engine is hot (shut off for only a few
>minutes). When I experience the problem however, it takes between 7-15
>seconds to start, and I can sometimes smell fuel outside the vehicle
>(no drips anywhere).
>
>I've had the car to a dealer who has:
>- Replaced the fuel pump.
>- Cleaned throttle body/valves.
>- Replaced the fuel pressure regulator.
>- Replaced the computer.
>- Performed hours of other diagnostics.
>
>I still have the problem. At this point, I'm assuming the pressure
>test is testing OK (so maybe not injector related). Any other ideas?
start. I have seen them seep enough fuel to cause this problem, yet
still be within the factory 'fuel system leak down' spec.
On 13 Oct 2006 07:14:16 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>I've seen this message posted several times, but no concrete
>resolution, so thought I'd post to see if anyone has any other ideas.
>
>I have a 2002 JGC, which is hard to start when the engine is warm
>(after a 45 minute cool down or so). It seems to start fine first
>thing in the morning or when the engine is hot (shut off for only a few
>minutes). When I experience the problem however, it takes between 7-15
>seconds to start, and I can sometimes smell fuel outside the vehicle
>(no drips anywhere).
>
>I've had the car to a dealer who has:
>- Replaced the fuel pump.
>- Cleaned throttle body/valves.
>- Replaced the fuel pressure regulator.
>- Replaced the computer.
>- Performed hours of other diagnostics.
>
>I still have the problem. At this point, I'm assuming the pressure
>test is testing OK (so maybe not injector related). Any other ideas?
#8
Guest
Posts: n/a
Re: 2002 Grand Cherokee Hard to Start
Over the last week, the dealer has:
- Tested the injection system.
- Tested a bunch of sensors.
- Checked all the grounds, battery, etc.
They suspected it could be carbon build up and suggested having the
valves cleaned/replaced if necessary. A compression test showed 1
cylinder down in the 120 range, so the valve job is uderway. Ugh.
- Tested the injection system.
- Tested a bunch of sensors.
- Checked all the grounds, battery, etc.
They suspected it could be carbon build up and suggested having the
valves cleaned/replaced if necessary. A compression test showed 1
cylinder down in the 120 range, so the valve job is uderway. Ugh.
#9
Guest
Posts: n/a
Re: 2002 Grand Cherokee Hard to Start
Over the last week, the dealer has:
- Tested the injection system.
- Tested a bunch of sensors.
- Checked all the grounds, battery, etc.
They suspected it could be carbon build up and suggested having the
valves cleaned/replaced if necessary. A compression test showed 1
cylinder down in the 120 range, so the valve job is uderway. Ugh.
- Tested the injection system.
- Tested a bunch of sensors.
- Checked all the grounds, battery, etc.
They suspected it could be carbon build up and suggested having the
valves cleaned/replaced if necessary. A compression test showed 1
cylinder down in the 120 range, so the valve job is uderway. Ugh.
#10
Guest
Posts: n/a
Re: 2002 Grand Cherokee Hard to Start
Over the last week, the dealer has:
- Tested the injection system.
- Tested a bunch of sensors.
- Checked all the grounds, battery, etc.
They suspected it could be carbon build up and suggested having the
valves cleaned/replaced if necessary. A compression test showed 1
cylinder down in the 120 range, so the valve job is uderway. Ugh.
- Tested the injection system.
- Tested a bunch of sensors.
- Checked all the grounds, battery, etc.
They suspected it could be carbon build up and suggested having the
valves cleaned/replaced if necessary. A compression test showed 1
cylinder down in the 120 range, so the valve job is uderway. Ugh.