Why are the emissions on my Jeep Cherokee so low?
I spent $995.00 on replacing my Jeep Cherokee’s catalytic converter. The SUV runs fine and emissions are now very low. The smog technician however will not complete the smog test because he says the emission monitors are not complete. I don’t know what to do.
Is there a readiness flag on my Jeep Cherokee?
Thank you. Since having replaced your Cherokee’s catalytic converter and clearing any trouble codes, your SUV’s emission monitors were cleared as well, in other words, the emission monitors (also known as readiness flags) were erased, and now need to be completed again.
What to do if your Jeep Cherokee has smog?
There are many starts and stops, as well as varying driving speeds. Smog check repair stations suggest performing drive cycles using dynomometers. If you feel you may be unable to perform the drive cycle safely seek assistance from a Jeep dealership service center or smog check repair station.
What should the gas tank be on a Jeep Cherokee?
If you feel you may be unable to perform the drive cycle safely seek assistance from a Jeep dealership service center or smog check repair station. During all sections of the drive trace make sure your gas tank is between 1/4 to 3/4 full of gas; never below or above the 1/4-3/4 marks.
I spent $995.00 on replacing my Jeep Cherokee’s catalytic converter. The SUV runs fine and emissions are now very low. The smog technician however will not complete the smog test because he says the emission monitors are not complete. I don’t know what to do.
There are many starts and stops, as well as varying driving speeds. Smog check repair stations suggest performing drive cycles using dynomometers. If you feel you may be unable to perform the drive cycle safely seek assistance from a Jeep dealership service center or smog check repair station.
What are the pre conditioning requirements for a Jeep Cherokee?
1) Cold soak vehicle, start and idle vehicle for 4 minutes. 2) Drive in-town (stop and go) for 5 minutes, using smooth acceleration and deceleration. 3) Stop and idle vehicle for 4 minutes. Pre-Conditioning Requirements: – MIL must be off. 1) Idle vehicle for five minutes (to reach closed loop operation).
Thank you. Since having replaced your Cherokee’s catalytic converter and clearing any trouble codes, your SUV’s emission monitors were cleared as well, in other words, the emission monitors (also known as readiness flags) were erased, and now need to be completed again.
What happens when your car is not ready for an OBD test?
The status of the emission systems may also be reset by disconnecting the battery. After being reset, the emission systems on your vehicle will have a “not ready” status.
Can you read your OBD-II code on a car?
If you’re resourceful enough to use your car’s OBD system, then you’re way ahead of the game, but let’s start with a refresher on the OBD-II code ‘s diagnostics, error messages, scan ports, and more. What Is OBD? Since the mid-1990s vehicles have had a built-in troubleshooting system known as OBD.
Where is the engine control module on a jeep?
The Jeep Engine Control Module, known as the PCM (Powertrain Control Module) ECU (Electrical Control Unit) or to simply it put the Automotive Engine Computer.
How can I tell if my Jeep is ready for an emissions test?
In order to determine if your Jeep, Dodge, or Chrysler vehicle is ready for an emissions test, you can either use an OBDII scanner or, if one is not available, check the MIL (check engine light). At A Star Smog, we will use an OBDII scanner to conduct a smog precheck.
The status of the emission systems may also be reset by disconnecting the battery. After being reset, the emission systems on your vehicle will have a “not ready” status.
How to check OBD2 readiness after engine shutdown?
Note: Original 1996 Chrysler vehicles do not maintain OBD2 readiness after engine shutdown, however this is a fix that is available at a dealer. For all drive cycles, make sure the check engine light (MIL) is off.
How many miles does a Jeep Cherokee need to drive?
In order to make the monitors READY or COMPLETE you’ll need to drive your Jeep Cherokee in a specific drive pattern, known as a Jeep Cherokee Drive Cycle. Typically driving 200-300 miles over the course of a week and in both city and highway traffic is enough to complete the monitors.
1) Cold soak vehicle, start and idle vehicle for 4 minutes. 2) Drive in-town (stop and go) for 5 minutes, using smooth acceleration and deceleration. 3) Stop and idle vehicle for 4 minutes. Pre-Conditioning Requirements: – MIL must be off. 1) Idle vehicle for five minutes (to reach closed loop operation).
Is the I / m system ready for EVAP test?
All I/M System Status indicators should report YES. Important: Whenever the ignition is turned ON, ignition positive voltage is supplied to the heated oxygen sensor (HO2S) heaters. After verifying the enable criteria, turn OFF the ignition for approximately 5 minutes to allow the sensors to cool before continuing with the test.
What’s the proper drive cycle for the EVAP test?
A change in TP Sensor angle or an increase in engine speed may invalidate this portion of the test. 8. Release the accelerator pedal and shift the vehicle to Park for automatic, or Neutral and release clutch pedal for manual, and allow the engine to idle for 2 minutes. 9.
All I/M System Status indicators should report YES. Important: Whenever the ignition is turned ON, ignition positive voltage is supplied to the heated oxygen sensor (HO2S) heaters. After verifying the enable criteria, turn OFF the ignition for approximately 5 minutes to allow the sensors to cool before continuing with the test.
When to perform an evaporative emission ( EVAP ) service bay test?
⇒ If the evaporative emission (EVAP) I/M System Status indicator displays NO, perform the EVAP Service bay test if available. ⇒ If the EVAP Service bay test is NOT available, it may take up to 6 drive cycles, with up to 17 hours between drive cycles, for the EVAP I/M System Status indicator to transition to YES.
In order to determine if your Jeep, Dodge, or Chrysler vehicle is ready for an emissions test, you can either use an OBDII scanner or, if one is not available, check the MIL (check engine light). At A Star Smog, we will use an OBDII scanner to conduct a smog precheck.
How many miles does a 2002 Jeep Grand Cherokee have?
I have had my 2002 Jeep grand Cherokee since 2008 and it already had 67,000 miles on it. It is the straight 4.0 ltr 6. I now have 187,000 plus and it runs as great as the day I bought it.
Why did my 1996 Jeep turn over but not start?
1996 Jeep turns over but will not start. I checked the spark plugs and there is no spark. Changed rotor, distributor Jeep Cherokee: 1996 Jeep turns over but will not start.
Why does my Jeep Cherokee say no start?
The TPS is the throttle position sensor. IT sounds to me like the computer is not awake causing your no start condition. The first thing to do is to be sure the computer is awake. Turn the key on and check reference voltage to the tps, cam and crank sensors.
If you feel you may be unable to perform the drive cycle safely seek assistance from a Jeep dealership service center or smog check repair station. During all sections of the drive trace make sure your gas tank is between 1/4 to 3/4 full of gas; never below or above the 1/4-3/4 marks.