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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1985CAMARO Z28, 5.0 H, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - PFIADJUSTMENTSMINIMUM IDLE SPEED5.0L & 5.7L V8
1985 Chevrolet Camaro Z28, 5.0 H, Automatic
5.0L & 5.7L V8
1985 Chevrolet Camaro Z28, 5.0 H, AutomaticSECTION 5.0L & 5.7L V8
- Pierce the idle stop screw plug with an awl, and remove plug. With IAC motor connected, ground diagnostic lead.
- Turn on ignition, do not start engine. Wait at least 30 seconds. With ignition on, disconnect IAC electrical connector. Remove ground from diagnostic lead and start engine. Allow engine to closed loop.
- Adjust idle stop screw to 400 RPM in drive on automatic transmission and to 450 RPM with manual transmission. Turn ignition off and reconnect connector at IAC motor.
- Adjust TPS to .62 volt. Secure TPS and recheck voltage. Start engine and inspect for proper idle operation.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.