Why does my Jeep idle so high?
Why is your Jeep idling high? There are multiple reasons that an engine could be running at a high idle speed but in Jeeps this can often be linked to vacuum leak issues, idle air control (IAC) issues, or throttle malfunctions.
How do you adjust the idle speed on a Jeep Cherokee?
If the idle speed is correct, you are finished. Shut off the engine, disconnect the tachometer and re-connect the vacuum lines. Adjust the idle speed by turning the idle speed adjusting screw on the carburetor (V6 models) or by turning the 1/4-inch nut on the sol-vac vacuum actuator (four-cylinder models).
How to clean an idle air control valve Jeep Cherokee?
In this video I am removing, cleaning and re-installing the idle air control valve (IAC valve, IAC sensor) on my Jeep Cherokee. If you’re having rough idle or some stalling issues, a dirty or faulty IAC valve is one possible cause for this problem. Loading…
Why do you need to adjust the idle speed?
Idle adjustment sets the proper speed of engine rotation during vehicle standstill (closed throttle). Correct idle speed is important for proper engine operation and fuel economy. Idle speed also affects the function of engine-driven accessories such as the alternator, air conditioning compressor, engine cooling fan and water pump.
Where is the throttle body on a 1998 Jeep Cherokee?
If that doesn’t work, you can replace the part to regulate the idle speed once again. Open the hood of your 1998 Jeep Cherokee. Find the throttle body straight back from the A/C compressor, to the left of the fuel injector and to the immediate right of the air intake temperature sensor on the engine block.
How do you set the idle speed on a Jeep Wrangler?
Blow some carb or throttle body cleaner into the bottom vent below the throttle body plate, above it, and then blow some in from where the IAC screws in. Like other said, there is no way to adjust your idle. Even if you manually adjust the plunger the computer will compensate for it and the idle will be the same anyway.
How does the idle work on a 1998 Jeep Cherokee?
The idle on the 1998 Jeep Cherokee is controlled by an idle air control valve. This part works with the vehicle’s main internal computer to regulate the air and idle speed of the engine.
Idle adjustment sets the proper speed of engine rotation during vehicle standstill (closed throttle). Correct idle speed is important for proper engine operation and fuel economy. Idle speed also affects the function of engine-driven accessories such as the alternator, air conditioning compressor, engine cooling fan and water pump.
What can I use to clean the idle valve on my Jeep Cherokee?
Use only aerosol carburetor cleaner on the valve parts — not on the sensors or anything else around the engine area. Put the idle valve back in place, start the Cherokee and see if this has rectified the problem. If not, take the valve off again and proceed to the next step.