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1999 Jaguar XK8 Question: engine accelerates by itself then goes to fail safe

 

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rcolgrp, Miami, FL, May 21, 2010, 05:53
 Rookie

the engine starts and accelerates by itself to 4000 rpm!?
then goes to fail safe mode

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, May 21, 2010, 08:03
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     Master

    Jaguar had some trouble with the throttle body housing. Jaguar do have a bulletin about improper throttle cable adjustment causing problems. IS there any independent Jaguar repair shop in your area that is knowledgeable in the repair of Jaguar. There are few electronic scantools that operate well for diagnosing Jaguars and the ones that work well for Jaguar are expensive.

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    rcolgrp, May 21, 2010, 08:12
     Rookie

    the shop says it might be throttle body (says it costs 2,500.00 remanuf???!!!) or the computer that controlls it??

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