97 Explorer Check Engine & Code P0455

[anonymous]

While driving my explorer two weeks ago, the check engine light came on. The
engine seemed to be running fine. I bought a code scanner and retrieved code
P0455, Evaporative Emission System Leak. I cleared the code and have driven
the explorer for the last two weeks without seeing another check engine
light until yesterday. I hooked up the scanner and found the same code. I'd
like to troubleshoot and repair this myself, but I don't know where to
begin. Any ideas???

[IK]

First check if the gas cap is on tight (I believe that this advice is even
in the user's manual).

IK

"anonymous" <user@*none*.net> wrote in message
news:am740b$19t$1...@news.datasync.com...

[Brian C. Thomson]

I have the same code on my '96 and have not had the time to really look
into it. It means a gross (large) leak in the evaporative emissions
system. There are a half dozen parts that could be bad. The gas cap can
be the source, as the other posting indicated, so you should check and
possibly replace the cap first since that is cheap and easy. The code
can occur if you run your engine while filling the tank, or if you do
not completely tighten the gas cap several clicks beyond tight after
refilling. That did not solve my problem. If you determine the cause
please post to the group.

I've got some troubleshooting info I found on the net. If you're
interested in it, let me know and I can scan and email it to you.

Thanks,

B. Thomson

In article <am740b$19t$1...@news.datasync.com>, anonymous

[Bob Longo]

According to my handy Ford diagnostic manual, DTC P0455 indicates:

"Continuous Memory Diagnostics Code (DTC) P0455 indicates that the target
vacuum on the Evaporative Emission (EVAP) control system detected a large
leak or not purge flow. Possible causes:

- After market parts and accessories nonconforming to the EVAP system
specifications.
- Damaged, missing, or improperly installed fuel filler cap.
- Blockage in fuel vapor hoses / tubes (EVAP canister tube, EVAP canister
purge outlet tube or EVAP return tube) in EVAP system.
- Disconnected or cracked fuel vapor hoses / tubes in EVAP system.
- EVAP canister purge valve stuck closed.
- Canister vent (CV) solenoid stuck open.
- Fuel tank pressure (FTP) sensor malfunction.
- EVAP canister leaking.
- Fuel vapor control valve tube assembly blocked.
- Fuel vapor vent value assembly blocked."

Good luck,
-Bob Longo

"anonymous" <user@*none*.net> wrote in message
news:am740b$19t$1...@news.datasync.com...

[jgril...@gmail.com]

I have the same code on 07 torrent but it comes on when I try to use the remote start ever happen to you before