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Why does my 1988 Jaguar XJS V12 have no fast idle on cold start and idles high when warm?
Wiki User
∙ 14y ago
Hi I'm new to the Jag world but believe it will probably linked to your AAV, auxilary air valve. located at the rear left of your engine with fairly large hoses leading from the left air cleaner and back into the left manifold. it has a wax pellet driven piston and this is renowned for sticking. If only partly open it will not give you good cold idle speed and when warm it will give you high idle.
Wiki User
∙ 14y ago
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