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98 5pd issues please help.

Old Oct 1, 2012 | 03:58 PM
  #16  
freegdr's Avatar
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Year: 1989 xj sport 2dr
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deff sounds like fuel issue
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Old Oct 1, 2012 | 04:05 PM
  #17  
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From: manchvegas nh
Year: 1998
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Engine: 4.0L
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yeah.
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Old Oct 1, 2012 | 04:12 PM
  #18  
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From: manchvegas nh
Year: 1998
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Engine: 4.0L
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where is the fuel filter on the 98? its not where it was on the 95 i had
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Old Oct 1, 2012 | 05:17 PM
  #19  
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Herp Derp Jerp
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From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
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Originally Posted by i-07
where is the fuel filter on the 98? its not where it was on the 95 i had
Fuel filter is just a basic screen and it's actually part of the whole fuel pump assembly in the tank.

Have you verified pressure at the fuel rail with a gauge on the schraeder valve?

What spark plugs did you install and are you sure the wires are in correctly?
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Old Oct 1, 2012 | 05:55 PM
  #20  
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From: manchvegas nh
Year: 1998
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pressure was 42-50 psi and the plugs are right

i just changed the upper 02 sensor and its running proper now thanks for all the help guys
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Old Nov 28, 2012 | 08:55 PM
  #21  
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From: Auburn, CA
Year: 95
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Engine: I6 4.0 242 HO
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did you properly tune your tps when you swapped it? if it's not set properly it will run badly.
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Old Nov 28, 2012 | 09:22 PM
  #22  
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From: Jacksonville, FL
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check one post up.
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Old Nov 29, 2012 | 07:23 AM
  #23  
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From: manchvegas nh
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yeah it was the upper o2 causing that issue.


now ive been trying to figure out why she is running soo cool like at 160ish
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Old Nov 29, 2012 | 08:36 AM
  #24  
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Year: 1998
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Engine: 4.0L I6 Powertech
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thermostat stuck open
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Old Dec 5, 2012 | 11:16 PM
  #25  
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Originally Posted by truckntractorhick
thermostat stuck open
yeah i fixed the tstat ran cool for a few days then sorta get to normal now. but i think i may have to do a heater core soon since the heat does not blow out hot air.
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