High idle after after using sct preloaded tune
03-31-2016, 11:41 AM
#11
Thread Starter
Join Date: Mar 2016
Location: New York
Posts: 16
I will check the TPS voltage when I make it home around 230, but I had went back to stock tune and drove around 5 miles, still same issue. I will take it out some more and hopefully get it to idle right. I had cleaned my throttle plate and body tho cuz I had a sticky gas pedal, also cleaned out my IAC but no luck with either of those. Had disconnected vacuum lines running to it while car was on and RPMs drop normally whenever I unplugged something. Any other options beside TPS voltage or cleaning out intake parts?
03-31-2016, 11:45 AM
#12
Thread Starter
Join Date: Mar 2016
Location: New York
Posts: 16
I will check the TPS voltage when I make it home around 230, but I had went back to stock tune and drove around 5 miles, still same issue. I will take it out some more and hopefully get it to idle right. I had cleaned my throttle plate and body tho cuz I had a sticky gas pedal, also cleaned out my IAC but no luck with either of those. Had disconnected vacuum lines running to it while car was on and RPMs drop normally whenever I unplugged something. Any other options beside TPS voltage or cleaning out intake parts?
03-31-2016, 01:05 PM
#13
2nd Gear Member
Join Date: Dec 2014
Location: Georgia
Posts: 225
Originally Posted by oxfordgt
This is 96-04 so no drive by wire.
You must have talked to a ford tech. They know nothing except how to change parts. I do my own tuning. Idle is not learned it is commanded. You tell the computer exactly what to do and it does that and nothing else.
It does have adaptive learning but that is for fueling so it can predict needed fueling changes.
You must have talked to a ford tech. They know nothing except how to change parts. I do my own tuning. Idle is not learned it is commanded. You tell the computer exactly what to do and it does that and nothing else.
It does have adaptive learning but that is for fueling so it can predict needed fueling changes.
03-31-2016, 04:37 PM
#15
2nd Gear Member
Join Date: Feb 2015
Location: Florida
Posts: 223
from what you have said I still think it's the IAC getting stuck at wide open as you come to a stop and soon you will know because it wont just get stuck wide open ... it will not open at all and your car will die while shifting gears or the idle will crash to 500 and barely make it back while braking ... but that's a 125 bucks so I would wait for that moment if your a broke guy like me. I had to just delete mine and make it run off the idle screw.
03-31-2016, 05:46 PM
#16
Thread Starter
Join Date: Mar 2016
Location: New York
Posts: 16
from what you have said I still think it's the IAC getting stuck at wide open as you come to a stop and soon you will know because it wont just get stuck wide open ... it will not open at all and your car will die while shifting gears or the idle will crash to 500 and barely make it back while braking ... but that's a 125 bucks so I would wait for that moment if your a broke guy like me. I had to just delete mine and make it run off the idle screw.
04-01-2016, 08:39 PM
#20
3rd Gear Member
Join Date: Feb 2013
Location: PA
Posts: 556
5V at WOT is good, if you want to check the TPS and you have 5V on the reference wire you should do a sweep test.
turn the key to the on position, engine off, Back probe the ground wire and sensor wire on the TPS.
Starting at closed throttle position .98 to 1V move the throttle slowly to the open position observing the changing voltage reaching 4.5V to 5V at WOT.
If you have a drop or so called flat spot in voltage during the sweep More than likely the TPS is bad.
Not sure but i don't think the TPS is is the cause of the issue you are having Just my opinion.
turn the key to the on position, engine off, Back probe the ground wire and sensor wire on the TPS.
Starting at closed throttle position .98 to 1V move the throttle slowly to the open position observing the changing voltage reaching 4.5V to 5V at WOT.
If you have a drop or so called flat spot in voltage during the sweep More than likely the TPS is bad.
Not sure but i don't think the TPS is is the cause of the issue you are having Just my opinion.