The water pump on 1990 tercels is not driven by the timing belt like most vehicles, instead it is driven by the alternator belt, making the previous answer completely wrong. It is a bit of a pain the change as you have to disconnect everything attached to it but the job does not require dropping the engine or mount removal or anything like that. Pick up a haynes, chiltons, etc. guide if you're going to do it and you will have no trouble.
The spark plug gap for a 1990 Toyota Tercel 1.5 liter 1BL 4-cylinder is .044 in thousandths of an inch. The 1990 Tercel gets 30 mpg in the city, and 36 mpg on the highway.
Try google
The Spark Plug Gap.044 (In thousandths of an inch)
On my '91 it's below the thermostat.
how do i replace a power steering pump in a 1990 toyota camry?
On the 1990 hatchback model, it is behind the right side panel under the hatch.
It is usually located on the brake pedal itself approximately halfway up
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take it to a garage
very carefully
tool for drive shaft
Where is the Water Pump located and how do you replace it on a 1990 Chevy Corsica?