Weird Idle
#1
Weird Idle
finally got my 1986 5.0 gt running, but my idle seems to fluctuate between 1000, and 700 rpms, i cant figure it out, ive put new plugs in it, but havent changed the wires or distributor they look to be brand new thats why i didnt touch them, vacuum line off somewhere? i really dunno whats causing it anything i should look for?
#5
RE: Weird Idle
Welcome to the World of the SD 5.0 Wandering Idle
It can be caused/fixed by many things...or not at all
It's as common as the 5.0 tick or the Fox Lean...and just as elusive
It could be:
TPS out of wack/failing
AIC needs cleaning or is failing
TB gunked up and needs cleaning
CTS failure
Could be fixed by:
Cleaning the above
New TPS
New AIC
New CTS
New TB
Adjustable Fuel Pressure Regulator
(?...I don't know why but it worked on one)
Or some people have reported success with a Ford part mentioned in this TSB from Ford:
http://www.mn12performance.com/mn12-...-7.pdf#search=
(yeah...it's common enough to have a TSB issued)
I don't have first hand knowledge of this one, but have reliable sources that had success with it
It can be caused/fixed by many things...or not at all
It's as common as the 5.0 tick or the Fox Lean...and just as elusive
It could be:
TPS out of wack/failing
AIC needs cleaning or is failing
TB gunked up and needs cleaning
CTS failure
Could be fixed by:
Cleaning the above
New TPS
New AIC
New CTS
New TB
Adjustable Fuel Pressure Regulator
(?...I don't know why but it worked on one)
Or some people have reported success with a Ford part mentioned in this TSB from Ford:
http://www.mn12performance.com/mn12-...-7.pdf#search=
(yeah...it's common enough to have a TSB issued)
I don't have first hand knowledge of this one, but have reliable sources that had success with it
Thread
Thread Starter
Forum
Replies
Last Post
mungodrums
S550 2015-2023 Mustang
10
09-28-2015 10:54 PM