• Tiny
  • andrewas16
  • 1993 Volvo 940

Engine Performance problem
1993 Volvo 940se Turbo 4 cyl Two Wheel Drive Automatic 155000 miles

My 940 has just developed a slight misfire, it has lost performance and has a lumpy tick-over. When first started it will not tick-over unless you rev it slightly for 20 seconds, worse when starting from warm. Once it has been running a while it doesn't stall on tick-over but the idle speed is erratic. A faullt code of 121 indicated a MAF meter which has been replaced, this helped the misfire and the performance but a misfire is still present when driving under light load at between 2000 and 3000 revs and the idling problems persist.

Wednesday, June 18th, 2008 AT 2:59 PM

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