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.
Charge Temperature Switch
Used on 6 cyl. and V8 engines only. CTS switch is located in No. 6 branch runner of intake manifold on 6 cyl. engines and in No. 8 branch runner of intake manifold on V8 engines. When air/fuel mixture temperature is below 60°F, switch will be closed, preventing EGR timer and valve operation. When air/fuel mixture temperature is above 60°F, switch will open, allowing EGR timer and valve operation and on V8 engines, change air pump air injection from upstream to downstream in exhaust system.
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.
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