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Are you having problems with the engine of your Toyota Tarago? Let our team of motoring experts keep you up to date with all of the latest Toyota Tarago engine issues & faults. We have answered all of the most frequently asked questions relating to problems with the Toyota Tarago engine.
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It would be worth doing a full tune on the engine if you haven’t done that recently. Check and make sure the idle speed is correct, and not too slow, fit new spark plugs and spark plug leads, and have the injectors cleaned.
THE Tarago can be converted to LPG, and many have been. You would probably have to use an old technology system for a vehicle that old because I'm told no one has yet developed an injection kit for that model. There's nothing wrong with the old systems if installed and set up correctly. A gas-injection system is less prone to backfiring because it doesn't flood the intake manifold, but the old systems do the job well if properly installed and set up.
IF IT takes an hour to reach the red zone, then it's unlikely to be the thermostat or the fan. It would be worth flushing the cooling system, checking the radiator, and refilling with fresh coolant. If that all checks out, you could consider fitting a larger fan.