Search



Go Back   MustangForums.com > Ford Mustang Tech > General Tech
Sign in using an external account
Register Forgot Password?
Search

General Tech Ask model specific questions in the appropriate category below. All other general questions within.
Sponsored by NewTakeOff


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 12-28-2010, 04:16 AM   #1
utistudentjason
 
Join Date: Dec 2010
Vehicle: 2000 3.8l mustang
Location: texas
Posts: 4
Default 2000 3.8l mustang

I have a 2000 3.8l mustang. It has a check engine light and the code is p0455(small evap leak). It smells like gas and gets 250 miles on a full 15 gallon tank(roughly 15mpg). I know that to fix the gas smell I prolly have to change the header gaskets out. Here is the fun part:
The drivers side spark plugs are all rich(black) and the passenger side spark plugs are all lean(red). I need to know how to test my 02 sensors without a scan-tool. And what is the easiest way to change out my oilpan gasket without removing the cross-member. I also have a ticking sound, but that's probably just the gasket on the headers needing to be replaced. I have some hand tools, a jack and jack stands, that's about it. Can I do this myself or do I have to take it in to fix it?
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
utistudentjason is offline   Reply With Quote
Old 12-28-2010, 04:15 PM   #2
petrock
4th Gear Member

 
Join Date: Nov 2006
Vehicle: '98 3.8L Mustang Convertible
Location: CA
Posts: 1,580
Default

Quote:
Originally Posted by utistudentjason View Post
the code is p0455(small evap leak).
p0455 is not a small evap leak, it is a large evap leak:

P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)

Most common cause is a the gas cap not sealing properly. Other then that, its a leaky hose in the evap system. It would explain the gas smell.
__________________
'98 3.8L Convertible (Red w/ White top)
petrock is offline   Reply With Quote
Old 12-28-2010, 08:09 PM   #3
Soldier GT
6th Gear Member

 
Soldier GT's Avatar
 
Join Date: Aug 2007
Vehicle: 2003 Ford Mustang GT
Location: MO/ Born and raised in Louisiana
Posts: 9,650
Default

^^^agreed..
__________________


Vortech V-1 T Trim SC (intercooled)
HP 292 cams
Teksid SB bored .030 over (forged)
433 RWHP/390 RWTQ
Soldier GT is offline   Reply With Quote
Old 12-29-2010, 02:16 AM   #4
utistudentjason
 
Join Date: Dec 2010
Vehicle: 2000 3.8l mustang
Location: texas
Posts: 4
Default

I would agree with you except that I have had the DTC for about 8 months and the gas smell didn't start until a couple weeks ago. I would understand a hose coming loose or cracking and creating a leak, but wouldn't it start out as a small leak? And if it did start as a large leak, wouldn't I have smelled gas sooner?
utistudentjason is offline   Reply With Quote
Old 12-29-2010, 03:16 AM   #5
everett
2nd Gear Member
 
Join Date: Nov 2010
Vehicle: 2000 mustang gt
Location: saskatchewan
Posts: 354
Default

Well the black plugs means really rich so the fuel smell is likely unburnt fuel from that side. If you have a garage and tall jackstands you should be able to manage the work yourself. Buy a haynes manual so you can see what you're up against and just replace all the 02 sensors then you cam rule them out as faulty and you can guarantee proper mileage and such because my gt gets better fuel economy then that bro so something is definitely wrong
everett is offline   Reply With Quote
Old 12-29-2010, 03:27 AM   #6
petrock
4th Gear Member

 
Join Date: Nov 2006
Vehicle: '98 3.8L Mustang Convertible
Location: CA
Posts: 1,580
Default

Quote:
Originally Posted by utistudentjason View Post
And if it did start as a large leak, wouldn't I have smelled gas sooner?
Not necessarily. 'Large' is relative to the system. The EVAP system is fairly small.


Quote:
Originally Posted by everett View Post
Well the black plugs means really rich so the fuel smell is likely unburnt fuel from that side.
Agreed. However, the plugs may not be the cause. They may be the effect. If something is fouling the plugs (e.g. oil/coolant leak into the cylinders) or the plugs aren't getting enough juice to generate an adequate spark, they won't burn the gas as efficiently and you'll get a rich condition.


Quote:
Originally Posted by everett View Post
just replace all the 02 sensors then you cam rule them out as faulty
Thats a pretty expensive guess to blindly replace all the O2 sensors ($50 x 4).
__________________
'98 3.8L Convertible (Red w/ White top)
petrock is offline   Reply With Quote
Old 01-01-2011, 06:19 AM   #7
'00project
1st Gear Member
 
'00project's Avatar
 
Join Date: Jun 2009
Vehicle: 2003 Mach 1
Location: Washington
Posts: 75
Default

If you are unsure and don't have much in the way in parts/tools to chase the problem yourself take it to a shop. If you have friend(s) that have a buddy who works or has a shop to get a free/discount that would be nice. Other than that, bite the bullet and get a shop to look at it.
I had a bad miss on #2 cylinder, shop wanted $600 just to take the head off no repairs to investigate. This was after I checked plugs, wires, and they rechecked them and the coil and injectors. Fixed it myself, broken spring no head removal, for $350 (tools rental and part).
Have them find the problem and fix it yourself for cheaper.
'00project is offline   Reply With Quote
Old 04-28-2014, 02:29 PM   #8
getsidewayzdrift
 
Join Date: Apr 2014
Vehicle: 2000 ford mustang 3.8
Location: florida
Posts: 4
Default

Check you fuel filler neck tube seal where it meets the gas tank, mine was rotted out and spilled out gas everytime I made a left turn with more than a quarter tank of gas. Got the same code, fixed it.
getsidewayzdrift is offline   Reply With Quote
Old 04-28-2014, 02:31 PM   #9
getsidewayzdrift
 
Join Date: Apr 2014
Vehicle: 2000 ford mustang 3.8
Location: florida
Posts: 4
Default

Quote:
Originally Posted by getsidewayzdrift View Post
Check you fuel filler neck tube seal where it meets the gas tank, mine was rotted out and spilled out gas everytime I made a left turn with more than a quarter tank of gas. Got the same code, fixed it.
15 dollar part and took 35 mins to fix without dropping the tank
getsidewayzdrift is offline   Reply With Quote
Old 04-28-2014, 02:35 PM   #10
getsidewayzdrift
 
Join Date: Apr 2014
Vehicle: 2000 ford mustang 3.8
Location: florida
Posts: 4
Default

Now if I can figure out why my steering wheel won't return to center on its own after cornering and fix a small exhaust leak that I've yet to pinpoint(think its just gasket) ill be golden lol
getsidewayzdrift is offline   Reply With Quote
Old 04-28-2014, 02:35 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
2000, 38, 38l, 98, code, engine, ford, forum, front, gt, leak, mustang, oil, p0455, plugs, po455, spark

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 Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 04:03 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup