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.
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HOMESERVICE MANUALSJEEP1994WRANGLER SAHARA, AUTOMATIC, 32RHREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - BASIC TESTINGIGNITION CHECKSIGNITION PRIMARY
1994 Jeep Wrangler Sahara, Automatic, 32RH
Ignition Primary
1994 Jeep Wrangler Sahara, Automatic, 32RHSECTION Ignition Primary
NOTE:
Perform SECONDARY SPARK
under IGNITION CHECKS before proceeding with test.
- Ensure battery has a minimum of 12.5 volts (9.5 cranking volts) available to operate cranking system. Ensure battery cable connections are clean and tight.
- Using an analog voltmeter, backprobe the following wires at the distributor. Touch positive lead to Tan/Yellow wire. Touch negative lead to Black/Light Blue wire.
- Set voltmeter to 15-volt DC scale. Crank engine. If voltmeter needle does not fluctuate between 0-5 volts, check related circuits. If necessary, replace camshaft position sensor. If camshaft position sensor is okay, but engine does not start, see TESTS W/CODES - 2.5L & 4.0L article in this section and check PCM.
RENDER: 1.0x
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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.