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  #1  
Old June 19th, 2017, 17:48
eightsevenzero eightsevenzero is offline
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Join Date: Jun 2017
Location: San Antonio, TX
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'97 XJ steady miss?

Hey,

Just bought a bone stock '97 with 4.0 and manual tranny, 147K on the clock. It idles at steady at 700 rpm but has a miss hiccup every second or so. Also when driving you can feel it ever so slightly continuously stumble under acceleration. No codes are being thrown and it actually has good power overall. Here's a list of stuff I've done to try and fix the issue:

New CPS
New Plugs, Dizzy cap, rotor, and wires
Fuel pressure test, holds 49 PSI steady

My next thing to try is maybe a can of Seafoam to see if it temporarily helps. Any ideas? Thanks!
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  #2  
Old June 19th, 2017, 19:19
Green XJ Jeep Green XJ Jeep is offline
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Join Date: Mar 2011
Location: Spanaway Wa
Posts: 551
Re: '97 XJ steady miss?

Is it getting up to operating temp?

My 96 was doing the same thing when the thermostat stuck open. New thermostat and problem solved.
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  #3  
Old June 19th, 2017, 20:38
eightsevenzero eightsevenzero is offline
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Re: '97 XJ steady miss?

Yes, always comes up to about 190-200.
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