EVAP issuing plaguing Mustangs! - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 2005-2010 Mustang GT

Join Mustang Evolution Today

Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 12-01-2011, 12:48 PM   #1
Registered Member
fluffyGT06's Avatar
Join Date: Oct 2010
Region: Florida
Posts: 22
EVAP issuing plaguing Mustangs!

So, I can only fill up my tank 1/2 way anytime I try. And if the flow is coming out to fast, it clicks off before. I did some research and found this lengthy but very helpful bulletin on another forum (see below). I know several people personally who have had this issue. I called Ford Corp and they said I am the first person ever to tell them about it. Um... yeh.... They told me they will now start investigating to see how many customers have come in for the same issue. In the meantime, they recommended that anyone else who has had or is having the problem the call in and let them know. If enough people call in, there should be a refund for those of you who had the issue and had to have it fixed and a resolution for those of you , including myself who are still experiencing the issue. Please read below to see if this is something you are and had experienced and then give them a call! Please! 800-392-3673 And thank you!

I, like many others on this Forum, have been plagued with the dreaded fuel fill problem. Mine started from day 1 (the day I bought the GT, the dealership tried to fill tank and only got ½ tank filled… we all assumed it was their pump). I’ve had my GT for 18 months now (14K miles), and run into the fill issue about every 3rd or 4th fill-up. Each time I ran the tank down to the “50 mile” warning, and when filling, set pump at slowest fill speed. When issue does surface, I can only get ½ tank in before pump shuts off...and fuel is all the way up in the filler neck. I’ve even crawled under the car at station and tapped on the saddle tanks… finding the left saddle tank filled while the right saddle tank sound like the tin-man (empty). OK, now on to the news you can use. I took car in yesterday for the RCM Module (airbag) reflash. While there, I told them I’ve had it with the fuel fill issue. I was really impressed with the dealership as they really owned up to the problem (stating they had run into a number of these in the last 2 years) and methodically trouble-shot the problem. Here’s an excerpt of the work-order notes:

“Using IDS and ran EVAP test. Vehicle pass test. Tried to add gas and monitor fuel tank pressure. Started out at 2.6 volts then it jumped to 3.5 volts to HIGH. Disconnect each line one by one to check for blockage. Found Charcoal EVAP Canister plugged. Replaced Charcoal canister assembly. Retest OK. Also removed fuel filler neck and inspected, OK. Inspected check valve in fuel tank, OK.

Note to Customer: This vehicle is equipped with SADDLE style tank which has two sections. Vehicle will not fill up completely unless the tank is below ¼ tank and unless you are using the “autofill” function on pump on the lowest flow setting”.

So, based on their notes, it appears while they were measuring the pressure in the tank, they witnessed a voltage jump. Assuming this means it was requiring additional current to attempt to ‘fill’ or force air out of the right tank via the EVAP system… thus concluded there was a slight obstruction (a.k.a., charcoal EVAP canister). They added new EVAP canister assembly, and I’m happy to report that today, while nervously adding fuel, I was able to fill to 100% capacity!

They also stated that they eliminated other possible concerns such as:

•Fuel Filler Neck (visual inspection and performed adjustment)
•Fuel Vapor Control Valve (electronically tested and passed)
•EVAP Canister (failed and replaced)
•Fuel Tank Pressure (FTP) sensor: (electronically tested and passed)
•Canister Vent Solenoid: (replaced with the EVAP Canister)
•EVAP Canister Purge Valve: (electronically tested and passed)
It appears there are many potential failure points in the Evaporative Emissions system which could cause the saddle tank fill issue… in my particular case, looks like it was the EVAP Canister and/or Canister Vent Solenoid (both replaced). The Service Manager did share with me up front that these types of issues can be difficult to resolve as FORD requires test failure documentation before authorizing part replacements (under warranty). My hat’s off to Folsom Lake Ford as their Tech was able to produce this failure (blockage) through the tank pressure test.

Anyway, sorry for the dissertation, but wanted to provide this to those still plagued with the fuel fill issue. Perhaps your issue is also tied to a partially blocked EVAP Canister and/or intermittent Canister Vent Solenoid. I guess only time will tell if in fact this did fix my issue (as I’d feel better after a half dozen successful full tank fills at various stations). Hopefully, based on what they found, looks like this may have solved the Pony feed issue.
fluffyGT06 is offline   Reply With Quote

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 2005-2010 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
9 Mustangs and 7,176 Horsepower on the Dyno & Track AMDanBailer AmericanMuscle 0 11-16-2011 05:22 PM
Mustangs in corpus ? Texasstang Regional Mustang Discussion 4 10-09-2011 06:42 PM
1996 Mustang V6 3.8l Evap Code xxxchaos 2.3 Mustang 0 07-30-2011 02:24 PM

» Like Us On Facebook

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

09:17 PM

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.