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.
1989 Pontiac SafariFACTORY OEM SERVICE PROCEDURE
Integrated Electronic EGR Valve
- With ignition off, connect vacuum gauge to EGR valve. Apply vacuum and observe EGR valve. EGR valve should not move. If valve moves, check that vent filter is unrestricted and replace EGR valve (if necessary).
- Turn ignition on and repeat Step 1). When applying vacuum, EGR valve should not move. If EGR valve moves, a fault exists in ECM or electrical circuits. See appropriate C-7 CHART in the COMPUTERIZED ENGINE CONTROLS section for further diagnosis.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.