stumble on acceleration
Thread Starter
|
Junior User
Joined: Feb 2004
Posts: 98
Likes: 0
From: shelton CT
stumble on acceleration
having a annoyimg problem,i have a 2000 f350 5.4 auto,that seems to stumble some of the time,when i accelerate. checked for codes no codes,anyone have heard of this deno
Thread Starter
|
Junior User
Joined: Feb 2004
Posts: 98
Likes: 0
From: shelton CT
stumble
all the time, my brother in law said it might be detonation,not a stumble at all.sounds reasonable going to try higher octane,but was wondering if any one has ever heard of or had this problem? thanks deno
Posting Guru
Joined: Oct 2003
Posts: 1,332
Likes: 4
From: Baltimore
I could either be the mass air flow sensor to the idle air control valve. Try cleaning the element in the mass air flow sensor with a electrial contact spray cleaner. The IAC can also cause similiar problems. Usually they will cause hard to start or stalling when cold, but have been know to cause performance problems also.
Posting Guru
Joined: Oct 2003
Posts: 1,332
Likes: 4
From: Baltimore
I'm not ssure of the set up on the trucks, I usually work on Crown Vics, but remove the inlet hose from the front the MAF. You should be able to see a wire element in the center. Sometimes you can actually see dirt or debis on the element. Spray the element with electrical cleaner and blow dry with low air pressure or allow to air dry. Also get a can of spray cleaner that is designed to clean throttle bodies. Ford doesn't recommend cleaning the throttle body since they put a special coating, but they do get a deposit build up. I clean the throttle body with a shop rag and spray cleaner. Just don't get too agressive. I you want to try to clean the IAC, remove it and use the throttle body cleaner. None of the above is hard to do and if you have any mechanical skills will be a piece of cake.
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
This could also be a bad coil. Sometimes you won't get a trouble code when this happens - if it only happens under load or at inititial take-off.
When this does occur - the only way to find it is to let the dealer perform diagnostics through a driveability test.
How many miles? When was the last time you changed the plugs? Have you changed them?
When this does occur - the only way to find it is to let the dealer perform diagnostics through a driveability test.
How many miles? When was the last time you changed the plugs? Have you changed them?
Thread
Thread Starter
Forum
Replies
Last Post
fair67driver
Modular V8 (4.6L, 5.4L)
4
Jan 25, 2012 09:02 AM
99FORD EXPY.
Explorer, Sport Trac, Mountaineer & Aviator
9
Aug 9, 2011 07:47 PM
