How many rpms should my Jeep idle at?

Most cars should idle around 650. The allowable RPM range for emissions testing at idle here is 450-1100, so you are basically at the absolute bottom of that range. Bump it up a bit, mine really likes to idle at about 600.

Can you adjust the idle speed on a Jeep Cherokee?

You cannot manually adjust the idle on the Jeep Cherokee, but you can clean the grime buildup on the idle control valve to fix rough, high or unstable idle speeds. If that doesn’t work, you can replace the part to regulate the idle speed once again.

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.

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 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).

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.

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.

How do you remove idle air control valve?

Grab the oval electrical connector that is connected to the idle air control valve and pull it away from the valve to disconnect it. Use a Phillips head screwdriver to remove the two screws that hold the valve in place. Use a rubber mallet to tap the valve body loose from its position.

How many RPMs should my Jeep idle at?

Most cars should idle around 650. The allowable RPM range for emissions testing at idle here is 450-1100, so you are basically at the absolute bottom of that range. Bump it up a bit, mine really likes to idle at about 600.

Why does my Jeep Wrangler run rich at idle?

Between the 258 in my ’81 CJ-7 and a couple friends that have 258 equipped Wranglers, I have fixed this problem half a dozen times and the cause of the problem has always been the same. The problem has always been caused by clogged idle tubes that cause fuel to drip out of the venturis and make the Jeep run rich at idle.

Is there a problem with the Jeep 258 BBD?

The most common problem I see with the engine is it’s inability to idle. Between the 258 in my ’81 CJ-7 and a couple friends that have 258 equipped Wranglers, I have fixed this problem half a dozen times and the cause of the problem has always been the same.

How to fix idle problem on Jeep 258 Carter?

The advantage of this approach is you can make sure there isn’t a lot of junk in the bowls, you can check your float adjustment, etc. It also may help if you have power brakes because the master cylinder may be in the way of getting the choke rod out.

What kind of model is a Jeep Wrangler?

The below solutions covers a wide range of Wrangler models, which can include the 2.5 as well as 4.0 models ranging from the TJ and upwards.

What kind of sensor does a Jeep Wrangler need?

The recommended sensors are the NTK O2 sensor and not any aftermarket or 3rd party sensors. If you are going to self-diagnose your Jeep problems, it’s highly recommended to invest in an OBDII scanner to properly diagnose your problem, which can save you thousands in the long run.

Why does my Wrangler sputter at low rpm?

If your vehicle sputters under light acceleration and low RPM but becomes increasingly bad the faster you drive, then you want to investigate your Coil Rail. Another tell-tale symptom is if the sputtering is in direct proportion to your RPM, i.e. the faster you drive the faster the sputtering.

What is the code for bad valve springs on Jeep Wrangler?

Codes like 12 and 55 can be safely ignored. So after many years and many unhappy jeep Owners complaining about the same issue, jeep finally released a TSB (technical Service Bulletin) addressing the issue of the bad valve springs on 97 models.