I've searched and read a lot of messages concerning this issue and have not found any that go as far as my situation w/ a resolution.
08 5.7 limited w/ 13k miles.
Check Gas Cap message came on, followed by Check Engine Light (I understand why the check engine light comes on following the Check Gas Cap, and I understand the whole evap pressure system as the root of the indicator).
I checked the gas cap (duh). Light and message still still on (for days of driving).
First Service visit: They did a "pressure test" and it passed. They reset the lights and "tightened up" the gas cap. I knew I'd be back since I was sure I tightened the gas cap but crossed my fingers and left.
Few days later: Check Gas Cap message came on, followed by Check Engine Light
Second Service visit: They did a "smoke test" to look for leaks. No leaks found. They replaced the gas cap with a new one, citing possible bad seal or sensor. They also replaced the "solinoid" or something similar sounding. Reset lights. I crossed my fingers and left.
Few days later: Check Gas Cap message came on, followed by Check Engine Light
Third visit is scheduled for Tuesday, they asked I leave it over night so they can test it cold.
Anyone been here before or have any ideas/knowledge?
Summary:
Meegwell
08 5.7 limited w/ 13k miles.
Check Gas Cap message came on, followed by Check Engine Light (I understand why the check engine light comes on following the Check Gas Cap, and I understand the whole evap pressure system as the root of the indicator).
I checked the gas cap (duh). Light and message still still on (for days of driving).
First Service visit: They did a "pressure test" and it passed. They reset the lights and "tightened up" the gas cap. I knew I'd be back since I was sure I tightened the gas cap but crossed my fingers and left.
Few days later: Check Gas Cap message came on, followed by Check Engine Light
Second Service visit: They did a "smoke test" to look for leaks. No leaks found. They replaced the gas cap with a new one, citing possible bad seal or sensor. They also replaced the "solinoid" or something similar sounding. Reset lights. I crossed my fingers and left.
Few days later: Check Gas Cap message came on, followed by Check Engine Light
Anyone been here before or have any ideas/knowledge?
Summary:
- Smoke test and pressure test passed.
- Gas cap was replaced with a new one.
- "solinoid" or something like that was replaced.
- Check Gas Cap (evap leak indicator) still comes on.
- Check engine light follows (as expected due to the first problem)
Meegwell
