1986 Jaguar XJS Loping at idle

Tiny
JES2FUNY2
  • MEMBER
  • 1986 JAGUAR XJS
  • V12
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
It lopes at idles to fast. Normal iddl speed, if I set up the idle around 12rpm it goes away, but thats too high. I replaced the fuel pump, flushed lines, replaced headgaskets and had heads redone. It runs fine when going down road, but when stopped lopes and sometimes stalls. HELP !
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Thursday, December 17th, 2009 AT 3:03 PM

1 Reply

Tiny
DAVE H
  • EXPERT
Check for any vacuum leaks
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Sunday, January 10th, 2010 AT 7:23 PM

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