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.
Exhaust Gas RECIRCULATION (C-7): Notes
There are 3 types of EGR systems used: pulse width modulated backpressure EGR (positive and negative) with a control solenoid, pulse width modulated backpressure (positive and negative) EGR without a control solenoid, and digital EGR. To determine EGR system usage, see EGR SYSTEM IDENTIFICATION table.
| Application | System Type | Solenoid Type |
|---|---|---|
| 2.0L, 2.2L & 2.5L TBI | BP/EGR | N/A |
| 2.3L PFI | Digital | N/A |
| 3.1 & 3.4L PFI | Digital | N/A |
| 3.8L PFI "H" Body | Digital | N/A |
| 4.9L PFI | BP/EGR | Normally Open |
| 5.0 & 5.7L TBI | BP/EGR | Normally Closed |
| 5.0L & 5.7L PFI "F" Body | BP/EGR | Normally Open |
| 5.7L PFI "Y" Body | BP/EGR | Normally Open |
NO RELATED
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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.