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Some vehicles may exhibit a Malfunction Indicator Lamp (MIL) illuminated with Diagnostic Trouble Codes (DTCs) P0442, P0455, P0456, P0457 or P1442 or a "Check Fuel Cap" Lamp illuminated with DTC P0457 for the Evaporative Emission System. Use the Rotunda Leak Detector Smoke Machine (Part 218-00001) or equivalent, to locate and repair leaks in the Evaporative Emission System. NOTE THIS PROCEDURE SUPERSEDES ALL OTHER PROCEDURES PUBLISHED IN SERVICE MANUALS AND TSB ARTICLES.
Disconnect the larger of two manifold vacuum lines at the EVAP Canister Purge Valve and cap it at the EVAP Canister Purge Valve (see Figure 2). Connect the Smoke Machine power cables to vehicle battery The "Power Indicator Lamp" should be on indicating a good battery contact. Install the EVAP Emission Test Port Adapter that is provided with the Rotunda's Smoke Machine to EVAP Canister Purge Valve test port. NOTE SPECIAL PROCEDURES HAVE BEEN DESIGNATED FOR WINDSTAR, LS, THUNDERBIRD & PZEV FOCUS BECAUSE THEY HAVE A CHECK VALVE THAT WILL PREVENT SMOKE FROM ENTERING THE FILLER NECK. For all except Windstar, LS, Thunderbird & PZEV Focus - Remove the fuel cap from the vehicle. Press and release the remote starter button in intervals of approximately 15 seconds on and 15 seconds off. NOTE THIS FLOW METER CALIBRATION MEASUREMENT INDICATES THE VEHICLE PASS OR FAIL CRITERIA BASED ON THE .020" EVAP SYSTEM LEAK STANDARD.
Connect the transparent air supply hose nozzle tip into the EVAP Service Test Port adapter. If the measurement is above the indicator flag, repeat SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE). Remove Fuel Cap and turn the vehicle's ignition switch to the run position and check the FTPV PID. For Windstar, LS, Thunderbird & PZEV Focus only verify that filler neck clamps are in good working order and tightened. The AIR pump is mounted to either the front of the engine or located in the left front corner of the engine compartment and supplies the air for the system. Blow through the check valve towards the cylinder head, then attempt to suck back through the valve (or blow through the other side).
Make sure the engine is cool before attempting to service the secondary AIR system to avoid being severely burned.
Hold the pump pulley from turning by compressing the drive belt, then loosen the pump pulley bolts.
If removing, install the electric AIR pump mounting bracket to the electric AIR pump assembly.
Install the electric air pump and inlet silencer and tighten the inlet silencer clamp to 2 inch lbs. Remove the air pump mounting bolts from the bracket, then remove the pump from the bracket. Remove the clamp and air hoses from the EDV left check valve pipe, or AIR system right pipe, as applicable.
If installing the left check valve, place the valve pipe assembly between the check valves and push the connector pipes out.
Via email, text message, or notification as you wait on our site.Ask follow up questions if you need to. I have seen before where other people have replaced the fan relay and actually moved it as far as the wiring would reach so that they could have easier acces next time it needed.
No still can't find it, My instruction say it could be the left inner frame or under the left headlight depending on when it was built.


Jeep shows a high and low speed radiator fan relay but it doesnt list what vehicle build configurations use this set up. I'm doing a follow up and noticed that you havent replied back or ACCEPT the answer to your question yet.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions. Note: Due to the amount of variations in valves for these applications, we recommend contacting your local dealership with your VIN to verify the correct part number for your specific application. Over time and daily use the electronic valve can wear out causing the check engine light to set. Honda “check engine” light: problem, Your “check engine” light comes on when your car’s onboard computer (or pcm, powertrain control module) records some kind of problem. Expert car advice - check engine light diagnostic, auto, Check engine light, diagnostics, auto repair, question, timing belt, diagram, technician, obd, codes, diagnostic, car help, car repair, car advice.
Hello, there is an icon that looks like a transmission and engine that is illuminated while the engine is running. So you are the owner of a 2004 honda odyssey and you think you may need a transmission repair or a transmission rebuild, what do you do next? Took out my handy dandy ob2 reader when the engine light came on and it said p0440, so i look in the book to find that it's an evaporative emissions control system.
Autozone repair guide for your driveability and emission controls electronic engine controls engine control module (ecm). Copyright © 2012 Autos Weblog, All trademarks are the property of the respective trademark owners. This may be caused by loose or leaking hoses, loose or broken fuel cap, a leak at the top of the fuel filler pipe neck, etc.
IF THE FUEL CAP IS SUSPECT DURING VISUAL INSPECTION, DO NOT DISTURB THE FUEL CAP UNTIL THE DIAGNOSTIC PROCEDURE IS COMPLETE.
Use the halogen light provided with the Smoke Machine to look for smoke in the engine compartment, EVAP hoses to EVAP Canister Purge Valve, CVS, carbon canister and area around the fuel cap. To do this, insert air supply hose (transparent hose) nozzle tip into appropriate EVAP System calibrated leak orifice located on the front of the Smoke Machine panel. The indicator ball in the flowmeter will go all the way to the top indicating the system is being pressurized. It also causes the oxidation catalytic converter to heat quickly which allows the conversion of exhaust gases to occur sooner.
The electric air pump pressurizes air from the air cleaner and pumps it to the check valves located near the exhaust manifolds.
I have had this jeep since it was new I don't think any one has moved it, was your jeep a 2003 or a 2004? If the radiator fan relay isnt in the location of the 3 holes as mentioned then your vehicle may be one of the few that used the high and low speed radiator fan relays that are located in the fuse box under the hood. To be sure you may need a scanner that can actuate the fan relays to make sure that the system works. I will be calling it a night but will keep an eye out tommorrow for any replies you may have. Please reply back if you need additional help or press ACCEPT so that the question may be closed out. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. I liked that I could ask additional questions and get answered in a very short turn around.


It mounts on the EVAP canister and is used to control the flow of vapors from the EVAPORATIVE system to the intake manifold. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.
IF THE LEAK VERIFICATION FAILS, THE CAP CAN BE REPOSITIONED OR REPLACED AND THE TEST REPEATED. Otherwise replace the EVAP Canister Purge Valve, verify the repair by repeating the No Flow Test and return vehicle. Position the flow meter red pointer flag so it aligns with the measurement of the indicator ball.
Remove the Smoke Machine Test equipment from the vehicle and reconnect the large EVAP Canister Purge Valve manifold vacuum hose and the test port's green cap.
By providing the ground, the PCM completes the circuit which energizes the pump relay and turns both the pump and the integral stop valve on.
Once you find it I will be happy knowing at least we are in the exact location, is its still not there than we can go from there. Keep in mind that the experts on this site are compensated for their time spent helping customers once ACCEPT is selected. Check for leaks in areas that are difficult to access, such as connections on top of the tank where connections may be or inside frame rails.
Release the button and remove the air supply hose nozzle tip from the EVAP System calibrated leak orifice. Once the indicator ball has stopped descending, observe if it is above or below the red indicator flag. For all except Windstar, LS, Thunderbird & PZEV Focus - if the sensor is within range, the concern is no longer present. When the ECM sends the activation signal, a plunger in the valve will move to seal the vent. IF DEBRIS ON THE SEALING SURFACE OF THE CAP APPEARS TO BE THE SOURCE OF THE LEAK, CLEAN THE CAP AND REINSTALL.
Depress starter button and introduce smoke to system until it can be seen exiting the CVS (located by filler neck). The ability to seal the vent is necessary for the on board diagnosis of other evaporative loss system components. If performing this verification after performing the SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE), go to Step 8. After a new fan is installed, it may squeal when it is first operated, until the sealing lip has worn in. When the vent is closed, under normal purge conditions, the evaporative loss system is depressurized and allows "EVAP Control System (Small Leak)" diagnosis. Inspect the EVAP hoses running to the carbon canister, fuel filler neck, CVS, and EVAP Canister Purge Valve. If this valve is defective, the Check Engine Light will illuminate to Set with Small Leak Diagnosis.



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