1998 Toyota Tercel Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1998 Toyota Tercel

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1998 Toyota Tercel Problems

Driveability Concerns Due to Throttle Position Sensor Out of Adjustment

The Throttle Position Sensor can get out of adjustment due to wear in the throttle body or due to carbon build up. This will cause the idle timing to advance more than 30 degrees which will cause very high HC and NOx emissions. Conversely, the Throttle Position Sensors can wear out and not properly advance the timing which causes a lack of power and poor fuel economy.

Rough Idle and Backfiring Engine with Check Engine Light

The Toyota Tercel has a known issue with the valves that if left unchecked, will cause burned valves and engine performance issues. 

The engine ‘breathes’ through valves that are pushed open by the camshaft, and closed by springs. When valves are closed, they seal against a valve seat. In this vehicle, the valve seat is too soft, so after the valve contacts it thousands of times, it becomes crushed. Once it is crushed, the valve can no longer make a proper seal, and the valves erode due to extreme temperature (burnt valve).

Symptoms related to this issue:

To repair the burnt valves, the cylinder head must be removed and rebuilt, which is a costly internal engine repair, however, this issue can be prevented through inspection and adjustment of valve clearances every 40,000 miles.

Rattling noise from timing belt tensioner at higher mileages
The timing belt tensioners may make a rattling noise at a higher mileages. This is due to the adjustment being at its limit. Our technicians tell us that range of the adjuster may be lengthened by elongating the slot where the spring attaches by 2-3 mm to remedy this problem.

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1998 Toyota Tercel Questions

What can cause the fuel pump to not get fire causing the car to not start? (1 answer)

Theres a continuous beep when switching-ON my car, remain constant while driving (3 answers)

When I am switching-ON my car a constant beep starts, which keeps making noise till I switch-OFF the engine. There's no alarm on the panel at all and drive is also normal.

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