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1992 Previa Idle Speed?

Biker Baz

By Biker Baz,
in Toyota Alphard/ Vellfire / Estima / Wish / BB

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Biker Baz

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Dear Previa owners!

My 1992 Previa 2.4 GL manual has idle issues!

When cold it stalls (unitl my foots been on the right pedal!) when hot it idles @ 1500 rpm (costly MPG).

I checked the idle adjustment screw to which I discovered it was wound in fully (minimum idle). All in all I would guess the cold start injector is running when not required and not running when it is required???

A Toyo. dealer gave me a clue being to two temperature sensors on the cyclinder head not sensing the correct temperature which leads to incorrect mixture thus giveing the idle problem.

As I have no engine check light illuminated I would pressume the sensors can't be completey...broken.

If anyone can give me a clue it would be much appreciated as im not relying on my non-specialised place of purchase to fix it under warranty. <_<

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