Rough Idle Temperture Related - Ford Truck Enthusiasts Forums



1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Rough Idle Temperture Related

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-23-2014, 06:04 PM
devbravo's Avatar
devbravo devbravo is offline
Freshman User
Thread Starter
 
Join Date: Sep 2004
Location: Pahrump NV
Posts: 41
devbravo is starting off with a positive reputation.
Rough Idle Temperture Related

1995 F250 w/351W.
no CEL, No OBD I codes (111 no errors KOEO & KOER)
Idle surges between 500 & 700 rpm.
When engine is cold and early in the Morning the idle surge is barely noticeable. However as engine heats up and the day gets warmer the
Idle surge is very noticeable.
Replaced EGR and TPS sensor, new IAC valve. new PCV
New plugs, MSD distributor cap and coil.
Replace all those brittle plastic vacuum lines w/color coded neoprene vacuum
lines. Engine has great acceleration.
However this idle surge is puzzling.
Any Thoughts and/or ideas would be greatly appreciated.

Thanks
Guy
Reply With Quote
  #2  
Old 07-23-2014, 10:16 PM
Spktyr Spktyr is offline
Posting Guru
 
Join Date: May 2004
Location: Dallas, TX, USA
Posts: 1,040
Spktyr is gaining momentum as a positive member of FTE.Spktyr is gaining momentum as a positive member of FTE.
Coolant temperature sensor.
Reply With Quote
  #3  
Old 07-24-2014, 03:57 AM
devbravo's Avatar
devbravo devbravo is offline
Freshman User
Thread Starter
 
Join Date: Sep 2004
Location: Pahrump NV
Posts: 41
devbravo is starting off with a positive reputation.
coolant temperature sensor?! Hmmm Thanks I'll look into that possibilty
Reply With Quote
  #4  
Old 07-26-2014, 09:45 AM
devbravo's Avatar
devbravo devbravo is offline
Freshman User
Thread Starter
 
Join Date: Sep 2004
Location: Pahrump NV
Posts: 41
devbravo is starting off with a positive reputation.
Turns out I had a loose spark plug wire was not making a good connection
so the number 2 cylinder was running rough.
Reply With Quote
  #5  
Old 07-26-2014, 11:52 AM
rla2005's Avatar
rla2005 rla2005 is offline
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,583
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
Thanks for the reply back with the root cause and resolution.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Surging Idle and Sticky Throttle Bowers25 1987 - 1996 F150 & Larger F-Series Trucks 16 05-26-2016 08:11 AM
SURGING idle fordboy97 1987 - 1996 F150 & Larger F-Series Trucks 3 11-12-2015 01:28 PM
'92 5.8 idle surging, hard start when cold, rpm surging when warm Flatbed 1987 - 1996 F150 & Larger F-Series Trucks 4 02-02-2015 05:07 PM
Idle surge almonyspm1 1987 - 1996 F150 & Larger F-Series Trucks 3 09-21-2013 08:27 PM
Low RPM Surge When Cold SteevenH 1997 - 2003 F150 4 09-15-2010 09:41 AM


Go Back   Ford Truck Enthusiasts Forums >

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


All times are GMT -5. The time now is 05:52 PM.