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cold idle
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  1. Small/Medium Vauxhall Cars Area
    astra coupe, 2.2 z22se.. Sitting with engine up to temp, occasionally heater temp drops away inside car, Rev it slightly (1500) and it comes back through hot instantly.. The engine temperature drops from nearly 90 down to under 80.. I'm not too worried as the engine has never cooked or had any...
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