Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Temperature-Controlled Idle Speed Boost
The temperature controlled idle speed boost is operated by a temperature-dependent control. In a cold engine condition the speed adjusting lever will be on the knurled stop plate and not on the idle speed adjusting screw. This will boost the idle speed and improve the warm-up phase of the engine. When the engine is warm, an expanding material element will release the speed adjusting lever so that it now rests on the idle stop screw and the temperature-contolled idle speed boost is no longer effective.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.