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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJEEP1986CHEROKEE LAREDO, 2D UTILITY, 2.1 B, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEADJUSTMENTTUNE-UP - V6ADJUSTMENTSTHROTTLE POSITION SENSOR (TPS) ADJUSTMENTCALIFORNIA
1986 Jeep Cherokee Laredo, 2D Utility, 2.1 B, 4WD
Throttle Position Sensor (TPS) Adjustment: California
1986 Jeep Cherokee Laredo, 2D Utility, 2.1 B, 4WDSECTION California
- DO NOT remove TPS adjustment screw plug unless TPS is not adjusted correctly or it is necessary to replace air horn assembly, float bowl, TPS sensor, or TPS adjustment screw.
- Using a 5/64" drill, carefully drill a hole in steel cup plug covering TPS adjustment screw. Plug is located next to TPS plunger bore. Remove steel plug using a small slide hammer.
- Disconnect TPS connector. Using 3 jumper wires, connect corresponding engine harness terminals to sensor terminals (A-to-A, B-to-B and C-to-C). Connect a digital voltmeter from TPS connector center terminal "B" to bottom terminal "C".
- With ignition on and engine stopped, turn TPS screw with a screwdriver to obtain specified voltage at curb idle position. A/C must be off and Idle Speed Control (ISC) fully retracted.
- After adjustment, a new cup plug or silicone sealant rubber RTV must be inserted in air horn.
THROTTLE POSITION SENSOR SPECIFICATIONS
| Application | Volts @ Idle |
|---|---|
| California Models | .26 |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.