Topic Sponsor
General F150 Discussion General Ford F150 truck discussions and questions
Sponsored by:
Sponsored by:

5.4L problems

 
Old 02-17-2008, 11:06 AM
  #1  
Member
Thread Starter
 
boyfromdixie88's Avatar
 
Join Date: Dec 2007
Location: Southern Maryland
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Default 5.4L problems

Hello,

I have hed my truck for a little over a year. I am a second owner of a 97' F-250. For as long as i can remember it has had like a "surge" or the engine will pick up then die down at 1500 RPMs. I have been totally baffled by this. to make a long story short the turck has spent a lot of time in the shop and i have yet to figure it out. I have replaced the plugs and boots. Thats about as far as I got. It didnt make a difference at all so i took it to the "proffesonals" they have messed with all parts of the EGR valve. Last i took it to a mechanic who replaced some DPTV sensor. it helped slightly. He also mentioned a program out that FMC came up with to "fix" these troubleshooting problems. If yall have any ideas or anything like that it would be greatly appreciated.
boyfromdixie88 is offline  
Old 02-17-2008, 08:45 PM
  #2  
Senior Member
 
wde3477's Avatar
 
Join Date: Jul 2007
Location: Cape Girardeau MO
Posts: 2,752
Likes: 0
Received 73 Likes on 73 Posts
Default

Has the Idle Air Control (IAC) solenoid been inspected and/or cleaned?

'Check Engine' light on while engine is running?

Do you mean it idles at 1500 RPM? If so, have you checked for any vacuum leaks?
wde3477 is offline  
Old 02-19-2008, 08:10 PM
  #3  
ASE Master Tech
 
TRITON7700's Avatar
 
Join Date: Feb 2008
Location: Chaumont NY
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default idle high or up & down?

If I'm not mistaken there is a rubber elbow on the back of the intake plenium. If you are having an up down or high/rough idle it could be that the rubber boot has dilapidated and collapsed causing it to tear thus leaking air. Seen the problem before if I have your symtoms correct. The boot is hard to locate. Using white lithium spray the back of the intake while the engine is running. This applies to the 5.4 engine.
TRITON7700 is offline  
 


Thread Tools
Search this Thread
Quick Reply: 5.4L problems


Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: