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.
1986 Volvo 245 Base, StandardFACTORY OEM SERVICE PROCEDURE
4-Cylinder Turbo Vehicles
- To test throttle switch circuitry, connect voltmeter across terminals "1" and "2". With ignition on and engine stopped, voltmeter reading at idle should be 2-8 volts.
- Above idle position, voltmeter reading should be 0 volts. If throttle switch does not respond as outlined, go to next step.
- With voltmeter still connected, ignition on and engine stopped, insert feeler gauge as shown in Fig 1 .
- Using feeler gauge listed in Throttle Switch Voltage Reading chart should produce voltages indicated in chart. If not, replace throttle switch and go to next step.
- After replacing throttle switch, connect voltmeter and turn ignition on with engine stopped. Loosen lock nut and turn adjusting screw on throttle lever until meter reading drops to 0 volts. Tighten lock nut.
- Insert .016" (0.4 mm) feeler gauge. Loosen throttle switch retaining screws until reading is indicated on voltmeter. Tighten retaining screws.
4-CYL TURBO THROTTLE SWITCH VOLTAGE SPECIFICATIONS
| Application | Feeler Gauge: In. (mm) | Voltmeter Reading |
|---|---|---|
| 4-Cyl. Turbo | .008 (0.2) | Any |
| 4-Cyl. Turbo | .045 (1.1) | 0 Volts |
Factory Service Tools
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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.