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-- Check Fuel Cap Light (http://www.escape-central.com/1forum/showthread.php?threadid=27231)


Posted by RickeyBird on 02-03-2007 01:27 AM:

Check Fuel Cap Light

Sorry if this has been posted somewhere already. Can't locate it through the search function because of minimum number of words...

What does it mean when the "Check Fuel Cap" light comes on? I have checked the fuel cap, let the car sit with the fuel cap off for more than a minute, had at least half a dozen cold starts since the problem started and still its on.

Help!!! Don't want to make the dealer any richer than they already are. Is this a serious problem? Is there a quick fix?

Thanks so much!


Posted by PollKat on 02-03-2007 03:48 AM:

I spent thirty minutes looking. The only (if any) clues were.
Do you smell gas,after you shut it off and engine is warm?
Is there a hiss, or sound like pressure being released when you remove it? (gas cap)
Have you taken it to some place to see if it has a P-XXXX code. (free of course) If it dose, you can use Google to get a better answer.
Even my manual doesn't say anything about the Cap light. Sorry i can't be of more help...


Posted by RickeyBird on 02-03-2007 04:21 AM:

Thanks, PK! Actually, that was a big help. All of the answers are no - don't smell gas, no hissing, haven't checked for a code.

WeeBee said that it might be under warranty because it's the emission system. Haven't had a chance to check on that either yet. I will and let you know what I find out.


Posted by PollKat on 02-03-2007 04:25 AM:

Time-Out.......Check your rear tailgate to make sure it's shut tight...We only had our "02" a coupel of weeks and the gas cap light came on. I was ready to take it back to the dealer when I saw it jar (wiggle) in the rear-view mirror. Pulled over got out,went behind. Sure enough, it was latched but not shut. It was the gas cap light and not the door-ajar.


Posted by RickeyBird on 02-03-2007 04:35 AM:

Now I'm confused. You're saying that the fuel cap light came on when your rear window was loose? I'll check that if you think there might be a connection.


Posted by PollKat on 02-03-2007 04:47 AM:

quote:
Originally posted by RickeyBird
Now I'm confused. You're saying that the fuel cap light came on when your rear window was loose? I'll check that if you think there might be a connection.

Yes it was the Gas-Cap light that would come on.
It wasn't the glass part. It was the whole tailgate. It was latched ,but not shut tight. Hope yours is as simple.
Did some more looking. From what I found, the seal could be bad on the cap. From what I've read,if the seal goes bad it can trigger the cap light.


Posted by LX302 on 02-03-2007 05:14 AM:

This was in my manual......

Check fuel cap: Momentarily illuminates when the ignition is
turned to the ON position to ensure your bulb is working. When the light stays on, check the fuel filler cap. Continuing to operate the vehicle with the check fuel cap light on, can activate the warning light. When the fuel filler cap is properly re-installed, the light(s) will turn off after a period of normal driving. This period will vary depending on driving conditions.

I've also read that it takes a couple of cycles of running the car for the light to go out.

If you don't like the warning light burning out your retinas, I'd remove the negative battery cable for 20min's and re-attach. This will clear the codes in the PCM. If it doesn't come on back on, your good. If it does, you have a problem with the cap or fuel line.
Oh, you'll most likely have to reset your preset on the radio.

__________________
Original owner of these vehicles:
'87 Ford Mustang LX 5.0L Hatchback 232,000 miles
'98 Ford Taurus SE, Duratec V6 105,000 miles
'05 Mazda Tribute s AWD 94,000 miles
and still on the road.


Posted by RickeyBird on 02-03-2007 06:58 AM:

Thanks PK and LX302. I'm gonna give the battery cable thing a try tomorrow. Let's hope its something that simple. It's really, really aggravating driving around with that light on...


Posted by Big Jim on 02-03-2007 08:05 AM:

That light comes on when the fuel evaperation monitor detects a leak in the system, allowing fuel vapor to escape. The gas cap is only one of the things that can make the light come on.

I agree with clearing the codes, securing the gas cap, and turning off the light, either with a code reader or by disconnecting the battery and seeing if it returns.

For the cost of a fuel cap, it is even worth replacing it before going in for other repairs.

These leaks are often located in a shop with a "smoke machine" Smoke is introduced into the fuel tank and you look for where the smoke escapes. It can be a sticking evap control valve or a cracked hose or who knows what.

__________________
Jim Johnson
03 Escape Limited
10 Fusion Sport


Posted by lgplayer on 02-03-2007 09:47 AM:

or the cap wasnt put back on all the way when u started the car after refueling

__________________
2006 escape xlt sport 4wd duratec 3.0l v64 speed automatic darkstone

mods
3rd brake light lense

pioneer speakers in the front ts-a6881r

pioneer FH-P800BT double din head unit with bluetooth and ipod connect


Posted by PollKat on 02-03-2007 02:20 PM:

quote:
Originally posted by RickeyBird
..... I'm gonna give the battery cable thing a try tomorrow....

If you do that it'll (the Escape) need to re-learn its Idle strategy. To do that.
After replacing the battery cable.
1. In park,set hand brake.
2. With all accessories OFF.
3. Start vehicle and let it warm up. (idle for 1 minute)
4. Turn on A/C. Let idle for at least one minute.
5. Drive the vehicle for at least 10 miles.
6. The vehicle should now have learned its fuel and idle trim strategy.
P.S. Robowang, also suggests one hard acceleration. So it learns a power cycle. But i have not read that part anywhere except here (EC).


Posted by RickeyBird on 02-03-2007 05:14 PM:

Thanks everyone! I'll be busy today it looks like.


Posted by Dasha on 02-04-2007 01:46 AM:

quote:
Originally posted by RickeyBird
I'll be busy today it looks like.


No different from most days ....


Posted by RickeyBird on 02-04-2007 03:15 AM:

That's true. Actually we snuck down to an exhibit I've been wanting to get to for some time at the Orlando Science Center: http://www.ourbodytheuniversewithin.com/. Gruesome and fascinating at the same time.

I'll have to think about the car tomorrow.


Posted by PollKat on 02-04-2007 04:36 PM:

I'm still looking.......
Found some TSB's
TSB #17380 -- A CHECK FUEL CAP INDICATOR ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P0457 OR A MALFUNCTION INDICATOR LAMP ILLUMINATED WITH DTC P0455 OR P0457. *TT (NHTSA ID #10008192, NOVEMBER 01 2003)

TSB #17316 -- FUEL SIGNAL TO INSTRUMENT CLUSTER SERVICE TIP. *TT (NHTSA ID #10008166, NOVEMBER 01 2003)

TSB #0398 -- MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION WITH DIAGNOSTIC TROUBLE CODES P0442, P0455, P0456, P0457, P1442 OR CHECK FUEL CAP LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE P0457. *TT (NHTSA ID #10002780, MAY 12 2003)
Don't know if that helps you much........PK


Posted by Big Jim on 02-04-2007 05:04 PM:

Don't forget that the NTSB TSBs have no relationship to Ford's TSBs. There is no cross reference. They are for a different purpose. The Ford TSB's are generated to help with technical information to fix problems. The NTSB TSBs are generated to gather information (mostly from consumers) of problems that may lead to recalls.

__________________
Jim Johnson
03 Escape Limited
10 Fusion Sport


Posted by PollKat on 02-04-2007 05:46 PM:

quote:
Originally posted by Big Jim
Don't forget that the NTSB TSBs have no relationship to Ford's TSBs. There is no cross reference. They are for a different purpose. The Ford TSB's are generated to help with technical information to fix problems. The NTSB TSBs are generated to gather information (mostly from consumers) of problems that may lead to recalls.

Good point, BJ.... Just went looking at the FoMoCo TSB's they are listed there as well.
Bulletin #17380
Sequence #10008192
&
B.N-0398
S.N.-10002780


Posted by Big Jim on 02-05-2007 12:01 AM:

You would need to find someone that subscribes to All Data or a similar service to have full access to the Ford TSBs. Or someone that works in a Ford dealership.

The Ford TSB numbering system is very differnet than what you posted. The numbers as far as I remember follow the following pattern: Year - TSB # -- Article number. So it would look something like TSB 07-01-01. That would be the first article of the first TSB published for 2007.

__________________
Jim Johnson
03 Escape Limited
10 Fusion Sport


Posted by PollKat on 02-05-2007 03:58 AM:

quote:
Originally posted by Big Jim
You would need to find someone that subscribes to All Data or a similar service to have full access to the Ford TSBs. Or someone that works in a Ford dealership.

The Ford TSB numbering system is very differnet than what you posted. The numbers as far as I remember follow the following pattern: Year - TSB # -- Article number. So it would look something like TSB 07-01-01. That would be the first article of the first TSB published for 2007.


I see what your saying. But I found them HERE. Take a look and see what you think...


Posted by Big Jim on 02-05-2007 09:09 AM:

I don't know what that is. It isn't a factory Ford TSB list.

__________________
Jim Johnson
03 Escape Limited
10 Fusion Sport


Posted by RickeyBird on 02-06-2007 01:01 AM:

Does anybody know what the emission system warranty is for 2003?

Thanks!


Posted by Squishy on 02-06-2007 10:18 PM:

It should be 8/80,000, but only for certain components. I don't know what those components are.

As for the TSB, this one addresses a gas cap light on situation (it's a big one):

Emissions - MIL ON/DTC's Stored/Check Fuel Cap Lamp ON
Article No.
03-20-3

10/13/03

DRIVEABILITY - MALFUNCTION INDICATOR LAMP

(MIL) ILLUMINATED WITH DTC'S P0442, P0455,
P0456, P0457, P1442 OR CHECK FUEL CAP LAMP
ILLUMINATED WITH DTC P0457

FORD:
1997-2000 CONTOUR
1997-2002 ESCORT
1997-2003 CROWN VICTORIA, MUSTANG, TAURUS
1998-2003 ESCORT ZX2
2000-2003 FOCUS
2002-2003 THUNDERBIRD
1997 F-250 HD
1997-1999 F-250 LD
1997-2003 E SERIES, EXPEDITION, EXPLORER, F-150, RANGER, WINDSTAR
1999-2003 F SUPER DUTY
2000-2003 EXCURSION
2001-2003 ESCAPE, EXPLORER SPORT TRAC, EXPLORER SPORT

LINCOLN:
1997-1998 MARK VIII
1997-2002 CONTINENTAL
1997-2003 TOWN CAR
2000-2003 LS
1998-2003 NAVIGATOR
2002-2003 BLACKWOOD

MERCURY:
1997-1999 TRACER
1997-2000 MYSTIQUE
1997-2003 GRAND MARQUIS, SABLE
1999-2002 COUGAR
1997-2003 MOUNTAINEER

This article supersedes TSB 03-9-8 to update the vehicle lines and Service Procedures.

ISSUE
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. 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.

ACTION
Use the Rotunda Leak Detector Smoke Machine (Part 218-00001) or equivalent, to locate and repair leaks in the Evaporative Emission System. Refer to the following Service Procedure for details.

Definitions of Acronyms
^ CVS Canister Vent Solenoid
^ DTC Diagnostic Trouble Code
^ EVAP Evaporative Emissions System
^ EVMV Electronic Vapor Management Valve
^ FTP Fuel Tank Pressure
^ MIL Malfunction Indicator Lamp
^ NGS New Generation STAR Tester
^ PID Parameter Identifier WDS Worldwide Diagnostic System

SERVICE PROCEDURE

NOTE
THIS PROCEDURE SUPERSEDES ALL OTHER PROCEDURES PUBLISHED IN SERVICE MANUALS AND TSB ARTICLES.

NOTE
MANY EVAP LEAKS ARE CAUSED BY A LOOSE OR FAULTY CAP. IF THE FUEL CAP IS SUSPECT DURING VISUAL INSPECTION, DO NOT DISTURB THE FUEL CAP UNTIL THE DIAGNOSTIC PROCEDURE IS COMPLETE. IF THE LEAK VERIFICATION FAILS, THE CAP CAN BE REPOSITIONED OR REPLACED AND THE TEST REPEATED. THIS ACTION WILL ISOLATE THE CAP FROM THE REST OF THE EVAP SYSTEM AS A POTENTIAL CONCERN. IF DEBRIS ON THE SEALING SURFACE OF THE CAP APPEARS TO BE THE SOURCE OF THE LEAK, CLEAN THE CAP AND REINSTALL.

OVERVIEW OF TEST PROCEDURES
NOTE
SEE (FIGURE 1) AT END OF ARTICLE FOR TEST PROCEDURE FLOWCHART.

This TSB provides the following procedures:
^ Check the EVAP Canister Purge Valve (9C915) for a no flow condition
^ Locate a leak so that a repair can be performed
^ Verify repair by utilizing a metered air pressure test

EVAP CANISTER PURGE VALVE NO FLOW TEST
1. Using WDS Datalogger select the following PID's: EVAPVM # (or EVMV#), EVAPCV # and FTP.
2. Start the vehicle.
3. Close both the Canister Vent Solenoid (CVS) (EVAPCV # On or 100% duty cycle) and the EVAP Canister Purge Valve (EVAPVM# Off or zero % duty cycle).
4. While monitoring the FTP PID, command open the EVAP Canister Purge Valve with the EVAPVM# PID to 100% duty
5. If the FTP decreases and/or the RPM changes and/or the engine stalls, the test passed. Turn off engine and proceed to test procedures below. Otherwise replace the EVAP Canister Purge Valve, verify the repair by repeating the No Flow Test and return vehicle.

SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE)
1. 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).
2. Connect the Smoke Machine power cables to vehicle battery The "Power Indicator Lamp" should be on indicating a good battery contact.
3. Position the selector valve on Rotunda's Smoke Machine Control Panel to "SMOKE".
4. Locate the vehicle's Evaporative Emission Service Test Port and remove the green cap. The EVAP Service Test Port is located close to or on the EVAP Canister Purge Valve.

WARNING
DO NOT REMOVE THE SCHRADER VALVE. REMOVING THE SCHRADER VALVE FROM THE TEST PORT ON VEHICLES EQUIPPED WITH THE ELECTRONIC VAPOR MANAGEMENT VALVE (9G641) AND/OR ELECTRONIC VAPOR MANAGEMENT VALVE & BRACKET ASSEMBLY (9G683) (SEE FIGURE 3), OR EVAP CANISTER PURGE VALVE (9C915) AND/OR EVAP CANISTER PURGE VALVE & BRACKET ASSEMBLY (9F933) (SEE FIGURE 2) WILL PERMANENTLY DAMAGE THE VALVE.

5. 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.

6. Connect black smoke hose nozzle tip to the EVAP Emission Test Port Adapter. For all except Windstar, LS, Thunderbird & PZEV Focus Use NGS or WDS to close CVS. (CVS WILL REOPEN AFTER NINE (9) MINUTES OF CONTINUOUS OPERATION).
7. For all except Windstar, LS, Thunderbird & PZEV Focus - Remove the fuel cap from the vehicle. Depress remote starter button: Smoke will be introduced into the EVAP Emission System. Secure the fuel cap once smoke is seen exiting from the fuel tank's neck area. For Windstar, LS, Thunderbird & PZEV Focus, do not remove fuel cap. Depress starter button and introduce smoke to system until it can be seen exiting the CVS (located by filler neck). Once smoke is seen, use NGS or WDS to close CVS. (CVS WILL REOPEN AFTER NINE (9) MINUTES OF CONTINUOUS OPERATION).
8. Press and release the remote starter button in intervals of approximately 15 seconds on and 15 seconds off. 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. Wiggle fuel vapor lines to check for leaks. 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. Use the black light to ensure that there are no leaks. If a leak is detected, repair as necessary. If the leak is not detected from the top, check under the bottom of vehicle. Inspect the EVAP hoses running to the carbon canister, fuel filler neck, CVS, and EVAP Canister Purge Valve. Go to LEAK VERIFICATION to verify any repair or if no leak is found.

LEAK VERIFICATION (METERED AIR SYSTEM)
1. Position the selector valve located on the Smoke Machine control panel to "METER".
2. Verify calibration of the flow meter by using the .020" calibrated leak orifice. 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.
3. TURN ON: Depress the remote starter button. Observe the position of the flow meter indicator ball. Position the flow meter red pointer flag so it aligns with the measurement of the indicator ball. Release the button and remove the air supply hose nozzle tip from the EVAP System calibrated leak orifice.

NOTE
THIS FLOW METER CALIBRATION MEASUREMENT INDICATES THE VEHICLE PASS OR FAIL CRITERIA BASED ON THE .020" EVAP SYSTEM LEAK STANDARD.

4. Connect the transparent air supply hose nozzle tip into the EVAP Service Test Port adapter.
5. Use NGS or WDS Diagnostic tool to CLOSE the CVS.
6. Depress the remote starter button on the Rotunda's Smoke Leak Detector. The indicator ball in the flowmeter will go all the way to the top indicating the system is being pressurized. Continue to depress the remote starter button until the ball stops descending. Once the indicator ball has stopped descending, observe if it is above or below the red indicator flag. If performing this verification following a repair, go to Step 7. If
performing this verification after performing the SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE), go to Step 8.
7. Leak Verification After Repair
a. If the measurement is below the indicator flag the system has passed. The test procedure is complete. 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.
b. If the measurement is above the indicator flag, repeat SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE).
8. Leak Verification After Passing SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE)
a. If the measurement is below the indicator flag the system has passed, go to Step 9.
b. If the measurement is above the indicator flag, repeat SYSTEM LEAK CHECK (SMOKE TEST PROCEDURE).
9. Using WDS Datalogger or NGS select the FTPV PID.
10. Remove Fuel Cap and turn the vehicle's ignition switch to the run position and check the FTPV PID.
11. The nominal value for the FTPV PID is 2.6V. If the value is greater than 2.8V or less than 2.4V, the FTP sensor is out of range and should be replaced. Verify the repair by checking to see if the new sensor is in range. For all except Windstar, LS, Thunderbird & PZEV Focus - if the sensor is within range, the concern is no longer present. (Windstar, LS, Thunderbird & PZEV Focus go to Step 12.)
12. For Windstar, LS, Thunderbird & PZEV Focus only verify that filler neck clamps are in good working order and tightened. Repair as necessary. If no problem is found with clamps, replace the fuel cap.

OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 03-9-8

Figure 1:

__________________


"Speak softly and carry a pool stick."


Posted by RickeyBird on 02-06-2007 10:55 PM:

Thanks so much, Squishy!


Posted by Squishy on 02-06-2007 11:15 PM:

No problem; hope you get it fixed

__________________


"Speak softly and carry a pool stick."


Posted by RickeyBird on 02-06-2007 11:18 PM:

It goes in to the dealer in the morning for an oil change and to check out this light thing.


Posted by RickeyBird on 02-08-2007 01:31 AM:

Got the car back from the dealer; they did the smoke test, checked the codes, reset the computer and installed a new gas cap. $140.00 later we were on our way home with no fuel cap light glowing, so I guess it was a success. Hope it stays off.

Thanks for all of the input!


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