2002 Jaguar XKR replace battery - idle wont sustain

Tiny
JOHNHWEBER
  • MEMBER
  • 2002 JAGUAR XKR
  • V8
  • 2WD
  • AUTOMATIC
  • 18,000 MILES
Car is rarely driven (obvious from miles). I ususally keep a trickle on the batter, but it got mistakenly unplugged. So recharged battery and reset windows.
Car will start but runs rough and dies after about 5 seconds. Have tried all throttle settings.
Read post about reset idle, but car won't run long enough. Car has been sitting for about six months. 5
Sunday, April 5th, 2009 AT 1:18 PM

1 Reply

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
My first thought, based on your description, is crankshaft position sensor. The idle reset will pretty much take care of itself, but gets its signal from the CPS. If the engine starts but won't rev up, the CPS is where I'd start. The only way you can test the CPS is either plugging the ECM into a diagnontic unit, or changing it.
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Monday, April 6th, 2009 AT 7:58 PM

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