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.

1993 Isuzu Stylus AutomaticFACTORY OEM SERVICE PROCEDURE

Idle Speed

IDLE SPEED SPECIFICATIONS

Application

Idle RPM

Amigo & Pickup

2.3L ⁽¹⁾⁽²⁾

900

2.6L ⁽¹⁾⁽³⁾⁽⁴⁾

900

3.1L

750

Rodeo

2.6L

900

3.2L

750

Stylus ⁽¹⁾

A/T

940

M/T

850

Trooper ⁽⁵⁾

750

⁽¹⁾	Transmission or transaxle in Park or Neutral.

⁽²⁾	Disconnect and plug vacuum advance, canister purge and EGR vacuum lines.

⁽³⁾	Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines.

⁽⁴⁾	On California vehicles, disconnect and plug vacuum line for EGR vacuum switching valve.

⁽⁵⁾	Idle speed is controlled by ECM and is not adjustable.

Factory Service Tools

Use the Manual With the Right Hardware

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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.