Jeep Grand Cherokee LTD

Tiny
TONY SPOORE
  • MEMBER
  • JEEP CHEROKEE
Hi we just bought a 1996 jeep 4.0 6cyl auto, 60,000 miles. When driving home the car would splutter above 3000 rpm. I stoped to fill up and now it starts and runs for 10 seconds and then cuts out. I replaced the fuel pump but did not fix it. If I pour fuel down the air intake it runs until I stop. So I don't think it is spark.
Regards Tony (Australia)
PS Have made a donation so please reply promptly. Thanks.
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Tuesday, September 18th, 2007 AT 4:07 AM

4 Replies

Tiny
RASMATAZ
  • MEMBER
When you turn key On, do you hear the fuel pump buzzing for a few secs. No -check the fuel pump relay inspect for good connection and test the coil and switch side of the relay then comeback-
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Tuesday, September 18th, 2007 AT 5:44 AM
Tiny
TONY SPOORE
  • MEMBER
When you turn key On, do you hear the fuel pump buzzing for a few secs. No -check the fuel pump relay inspect for good connection and test the coil and switch side of the relay then comeback-[/quote:9776aaaef2]

Yes the fuel pump works for a few seconds when I turn the key. I checked the relay by jummping a wire bettwen the 87 30 pins pump ran all the time but engine was the same ie starts for 10 seconds and stops. It feels like the fuel gets turned off after it starts ethier at the pump or injectors.
Thanks heaps for your help Tony
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Tuesday, September 18th, 2007 AT 6:00 AM
Tiny
RASMATAZ
  • MEMBER
When you turn key On, do you hear the fuel pump buzzing for a few secs. No -check the fuel pump relay inspect for good connection and test the coil and switch side of the relay then comeback-[/quote:ddb490fbbb]

Yes the fuel pump works for a few seconds when i turn the key. I checked the relay by jummping a wire bettwen the 87 30 pins pump ran all the time but engine was the same ie starts for 10 seconds and stops. It feels like the fuel gets turned off after it starts ethier at the pump or injectors.
Thanks heaps for your help Tony[/quote:ddb490fbbb]

Okay check the crank sensor on the transmission bellhousing and cam sensor in the distributor-check their connections

Could be that computer is not getting the crank signal and not energizing the injectors- check the crank sensor thoroughly.


http://www.2carpros.com/forum/automotive_pictures/12900_96_jeep_CPS_1.jpg

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Tuesday, September 18th, 2007 AT 6:12 AM
Tiny
TONY SPOORE
  • MEMBER
I just got a new crank angle sensor and jeep fired up and ran sweet as. I am very happy and would like to thank you for your help. Saved me a lot of time, money and heartache. You are doing a great job.
Regards Tony
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Thursday, September 20th, 2007 AT 4:43 AM

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