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 MANUALSJEEP1987WRANGLER BASE, 2.5 HREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - TBITESTINGDIAGNOSTIC TOOLS
1987 Jeep Wrangler Base, 2.5 H
Diagnostic Tools
1987 Jeep Wrangler Base, 2.5 HSECTION Diagnostic Tools
To properly test throttle body fuel injection system, service technician must have the following equipment available:
- Digital volt-ohmmeter (DVOM) or volt-ohmmeter with minimum input impedance of one megaohm.
- 12-volt test light, jumper wires and probes.
- Hand vacuum pump with gauge.
- Ignition timing light.
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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.