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.
Ignition Checks: Spark
Check for spark at spark plug wires using a spark tester. Check resistance of each spark plug wire. Replace wire if resistance is not within specification. See appropriate HIGH TENSION WIRE RESISTANCE table below.
| Application | Ohms | Wire Length: In. (mm) |
|---|---|---|
| No. 1 | 495-11,560 | 21.25 (540) |
| No. 2 | 486-11,330 | 21.65 (550) |
| No. 3 | 495-11,560 | 21.25 (540) |
| No. 4 | 524-12,230 | 23.62 (600) |
| Application | Ohms (PFI) | Ohms (TBI) |
|---|---|---|
| No. 1 | 243-567 | 243-567 |
| No. 2 | 948-22,130 | 838-19,560 |
| No. 3 | 958-22,360 | 790-18,440 |
| No. 4 | 241-562 | 241-562 |
| Application | Ohms (1.8L) | Ohms (2.7L) |
|---|---|---|
| No. 1 | 243-567 | 243-567 |
| No. 2 | 947-23,030 | 10,860-25,330 |
| No. 3 | 958-22,360 | 11,240-26,230 |
| No. 4 | 241-562 | 452-10,550 |
| No. 5 | N/A | 11,430-26,680 |
| No. 6 | N/A | 260-607 |
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.
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