Question about 1991 Jaguar XJ6

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91 XJ6 Stalls occasionally in Drive with brake depressed

My 91 XJ6 Stalls occasionally in Drive with brake depressed.

Anyone with some insight?

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Idle valve? If stuck in hot position (they often do), then not enough air when engine is cold. Symptom would be that it does this more when cold. The brake pedal thing gets me a bit, does it do it when the handbrake is pulled on but in Drive? If so, nothing to do with brakes, but just that there is a load on the engine caused by halting the torque converter creep, which goes back to idle control problem. If it is only with the foot brake, then I would suspect vacuum leak, there is a whole host of vacuum circuits on your Jaguar, have a look for hoses that have rubbed on the engine and have a slight hole or ones that have perished. Pressing the brake causes a reduction in vacuum to all the circuits, but if there is an air leak, then this can cause the inlet manifold vacuum to collapse and the engine to stall.

Posted on Jul 29, 2009


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