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1988 Jeep Cherokee Bucking

Tiny
NIKITA1968
  • MEMBER
  • 1988 JEEP CHEROKEE
1988 jeep cherokee 4.0 219 thousand miles
ok I am pulling my hair out when you start to drive in the jeep it will buck at 10 to 15 mph then stop when you get to 45 and up it bucks even more we have changed plugs and wires 02 sensor dist cap routor and fuel pump cylnoids replaced fuel injectors also changed manifold and made sure no vaccum leaks DOES ANYONE KNOW WHAT ITS DOING HELP! AND WHY! :Evil:
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Friday, July 13th, 2007 AT 9:57 PM

1 Reply

Tiny
DPWD23
  • MECHANIC
  • 136 POSTS
Can you further explain what you mean by "bucking up".
I don't know if you mean surging (powerful little bursts) or if you mean it feels like it wants to stall.

I had lots of problems with my 1988 Cherokee surging, and tried everything. Finally narrowed it down to a faulty fuel pressure regulator. It is mounted on the fuel rail closest to the front of the engine on the drivers side.

I hope this helps, if not let me know. We can figure this one out.
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Monday, July 23rd, 2007 AT 1:57 AM

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