AFM Web

Go Back   Ford Mustang Forums > Mustang Forums > 5.0 Mustang > 5.0L Tech
Welcome to AllFordMustangs.com. We look forward to you registering on our forum and making your first post.
Introductions | Mustang Lounge | 5.0 Talk | 5.0 Tech | 94-95 Tech | Mustang Tech | Racing | Regional

Reply
 
Old 12-02-2008   #1 (permalink)
metalmessiahxvi is offline Rookie


Joined: Dec 2008
Posts: 7 Threads: 1
 metalmessiahxvi's Country Flag
lk stevens   Washington
Default running rich at idle/checkengine on hard acceleration

hi i have a question and ive been going to shop after shop and have tryed a million things. the car runs rich at a idle... and when i accelerate hard floring the car the check engine light comes on any ideas?
metalmessiahxvi is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #2 (permalink)
bdbolling19 is offline Made Member

5.0L Member


Joined: Sep 2007
Posts: 933 Threads: 55
 bdbolling19's Country Flag  View bdbolling19's 16 photos
Davis   California
Default

the check engine light could be from the low-oil sensor. have you checked the oil level?

as for the running rich at idle, start with the sensors, O2, TPS, etc
__________________
Winning isn't everything, but losing sure sucks!

1983 Mustang GT T-Top.
270rwhp, 280rwtq.
bdbolling19 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #3 (permalink)
metalmessiahxvi is offline Rookie


Joined: Dec 2008
Posts: 7 Threads: 1
 metalmessiahxvi's Country Flag
lk stevens   Washington
Default

The car isn't low on oil, it's done it since I got the car 2 years ago and I have replace the o2, throttle position, MAF sencores. Rebuilt engine with a 347 stroker, at a total loss with what it could be...
metalmessiahxvi is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #4 (permalink)
bdbolling19 is offline Made Member

5.0L Member


Joined: Sep 2007
Posts: 933 Threads: 55
 bdbolling19's Country Flag  View bdbolling19's 16 photos
Davis   California
Default

how much fuel pressure are you running at idle? what size injectors?
__________________
Winning isn't everything, but losing sure sucks!

1983 Mustang GT T-Top.
270rwhp, 280rwtq.
bdbolling19 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #5 (permalink)
metalmessiahxvi is offline Rookie


Joined: Dec 2008
Posts: 7 Threads: 1
 metalmessiahxvi's Country Flag
lk stevens   Washington
Default

god its been a while sence i checked fule pressure. but it was within the fule pressure range when i checked it last... and it is the stock injectors
metalmessiahxvi is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #6 (permalink)
metalmessiahxvi is offline Rookie


Joined: Dec 2008
Posts: 7 Threads: 1
 metalmessiahxvi's Country Flag
lk stevens   Washington
Default

could it possably the maf it is kinda loose.. and do they have to be perfectly levle?
metalmessiahxvi is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #7 (permalink)
SVT1995 is offline Senior Member

5.0L Member


Joined: Feb 2008
Posts: 2,069 Threads: 35
 SVT1995's Country Flag  View SVT1995's 4 photos
Milwaukee   Wisconsin
Default

Whens the last time you got new o2 sensors?
If there bad it will make the light come on I think they will also make the car run rich.
You may also need a new fule regulator.
__________________
When the people fear their government, there is tyranny; when the government fears the people, there is liberty.
--Thomas Jefferson
SVT1995 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #8 (permalink)
metalmessiahxvi is offline Rookie


Joined: Dec 2008
Posts: 7 Threads: 1
 metalmessiahxvi's Country Flag
lk stevens   Washington
Default

its got les the 2000 on the o2s and mabie 300 on the regulator..... ive had 3 different shops scratchin their heads on this car.... im just wondering about the mass air flow. its not bolted in so great but at a idle it shouldnt matter so bad
metalmessiahxvi is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #9 (permalink)
SVT1995 is offline Senior Member

5.0L Member


Joined: Feb 2008
Posts: 2,069 Threads: 35
 SVT1995's Country Flag  View SVT1995's 4 photos
Milwaukee   Wisconsin
Default

Quote:
Originally Posted by metalmessiahxvi View Post
its got les the 2000 on the o2s and mabie 300 on the regulator..... ive had 3 different shops scratchin their heads on this car.... im just wondering about the mass air flow. its not bolted in so great but at a idle it shouldnt matter so bad
I'd bolt it up right.
Is the maf calerated to your injectors size?
What size are you running? Do you have a cold air?
What brand?
__________________
When the people fear their government, there is tyranny; when the government fears the people, there is liberty.
--Thomas Jefferson
SVT1995 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 12-02-2008   #10 (permalink)
metalmessiahxvi is offline Rookie


Joined: Dec 2008
Posts: 7 Threads: 1
 metalmessiahxvi's Country Flag
lk stevens   Washington
Default

its a pos cold air im just about to upgrade to a better on stock injectors and it is a stock maf
metalmessiahxvi is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply



Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
1986 Mustang Running Rich LCilla 5.0L Tech 3 08-28-2008 10:31 PM
2005+ Mustang... What's needed to install daytime running lights? prqwler01 2005-2009 Mustang GT Tech 9 05-08-2008 12:22 AM
Need help with carb running rich, jet size maybe? FaTaLAttRacTion 5.0L Tech 15 01-28-2008 01:35 AM
Running rich help.. steve b 5.0L Tech 2 11-09-2006 02:05 PM
Ping under hard acceleration 4.6L Tech 13 04-30-2002 07:52 AM

sponsors

Mustang Photos
Add to Favorites    Link to us    Contact    Directory    Site Rules    Archive    Terms of Use    Privacy    Top Sites    RSS    Meet Our Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2010 All Auto Enthusiasts Network

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112