Rough idle only when coming to full.stop
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Senior Member
Joined: Sep 2011
Posts: 1,298
From: Sunshine state , MIami
The only way to find out if your TPS is within the program limits is to use a scanner to see what the percentage of WOT (wide open throttle) is and to make sure it does not break thru those limits. Basically you would have to drive the truck and then let go of the throttle to see it does not go below 0%. Another method is to disconnect your IAC motor at idle so that when you go off idle it will go back to the orifice opening to have the same idle it has before. If you experience the same problem it is not the IAC's fault. I am beginning to think that the fuel is shut off to very lean when you let off the throttle causing the stumble...but thats a guess at this point.
Im thinking replace the Tb/Tps. Like I said before it give me some problems already .
Btw do you know if replacing the tb/tps needs a dealer computer relearn
@hummer2003 ... it doesn't feels like downshift. if I keep driving around 5mph you feels the rough idle even if not stopping
thanks
Thread Starter
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Senior Member
Joined: Sep 2011
Posts: 1,298
From: Sunshine state , MIami
Took a screenshoot from Torque app today while driving
may give a little more info
If you check tge rpm moves erratic when going around 5mph ...
The Throttle never went.t to 0... Is that normal?
And to rectify even on neutral tge rpm is acting rough. maybe a little less but still feels rough and shakes while moving at 5pmh in neutral
may give a little more info
If you check tge rpm moves erratic when going around 5mph ...
The Throttle never went.t to 0... Is that normal?
And to rectify even on neutral tge rpm is acting rough. maybe a little less but still feels rough and shakes while moving at 5pmh in neutral
Senior Member
Joined: Mar 2014
Posts: 495
From: Viera, FL
Just a hot in the dark here.
Make sure that your intake tube is not rolled under at the throttle body. Its a pain in the a$$ to get on right. Then make sure the arrows are lined up at the MAF and tube connection and that tube to air cleaner connections are correct.
Lastly, disconnect the MAF if all the above is OK and see if it still drives rough.
Tim
Make sure that your intake tube is not rolled under at the throttle body. Its a pain in the a$$ to get on right. Then make sure the arrows are lined up at the MAF and tube connection and that tube to air cleaner connections are correct.
Lastly, disconnect the MAF if all the above is OK and see if it still drives rough.
Tim
Thread Starter
|
Senior Member
Joined: Sep 2011
Posts: 1,298
From: Sunshine state , MIami
Just a hot in the dark here.
Make sure that your intake tube is not rolled under at the throttle body. Its a pain in the a$$ to get on right. Then make sure the arrows are lined up at the MAF and tube connection and that tube to air cleaner connections are correct.
Lastly, disconnect the MAF if all the above is OK and see if it still drives rough.
Tim
Make sure that your intake tube is not rolled under at the throttle body. Its a pain in the a$$ to get on right. Then make sure the arrows are lined up at the MAF and tube connection and that tube to air cleaner connections are correct.
Lastly, disconnect the MAF if all the above is OK and see if it still drives rough.
Tim
will double check the maf and test with out
Thx
Last edited by H2Miami; Oct 6, 2017 at 02:30 PM.
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