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.
2004 Saturn Ion Red LineFACTORY OEM SERVICE PROCEDURE
Engine Controls Component Views
WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 1 | Fuel Injectors Rail |
| 2 | Throttle Body |
| 3 | Manifold Absolute Pressure (MAP) Sensor |
| 4 | Ignition Control (IC) Module |
| 5 | Evaporative Emissions (EVAP) Canister Purge Solenoid Valve |
| 6 | G105 (2.0L Similar) |
| 7 | Crankshaft Position (CKP) Sensor |
| 8 | Knock Sensor (KS) |
| 9 | C150 |
| Callout | Component Name |
|---|---|
| 1 | Backup Lamp Switch (M86) |
| 2 | Engine Coolant Temperature Sensor (ECT) |
| 3 | Heated Oxygen Sensor (HO2S)1 |
| 4 | Heated Oxygen Sensor (HO2S)2 Connector |
| Callout | Component Name |
|---|---|
| 1 | C406 (Fuel Controls) |
| 2 | C406 (EVAP Controls) |
| 3 | Evaporative Emission (EVAP) Canister Vent Solenoid |
| Callout | Component Name |
|---|---|
| 1 | Idle Air Control (IAC) |
| 2 | C150 |
| 3 | Generator |
| 4 | Generator B+ |
| 5 | Throttle Position (TP) Sensor |
| 6 | Intake Air Temperature (IAT) |
| Callout | Component Name |
|---|---|
| 1 | Fuel Injector 1 |
| 2 | Fuel Injector 2 |
| 3 | Fuel Injector 3 |
| 4 | Fuel Injector 4 |
| Callout | Component Name |
|---|---|
| 1 | Fuel Tank Pressure (FTP) Sensor |
| 2 | Fuel Pump and Sender Assembly |
| 3 | Fuel Pump Strainer |
| 4 | Fuel Level Sensor |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ 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.
