Hello everyone I am have a issue with my truck. I can't figure out why it's loping at idle and some times when I come to a stop.
I have changed the idle control settings and IAC duty cycle back to stock with no change. The truck has a brand new motor craft IAC valve.
The truck is turbocharged and tuned with SCT.
PLEASE HELP !!!!
Lopping at idle
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MPCOBRA
- Posts: 21
- Joined: 2023 Nov 20, 08:17
- Location: Owasso, Oklahoma
- Vehicle Information: 2001 / Ford / F150 / XLT 4.6L 2valve / KHM3
The truck is turbocharged with a Pulsar T51R PSR3584 GEN II Ball Bearing Turbo 0.82A/R Stainless Steel Turbine with a 30.00" X 12.00" air to air intercooler, 80lb Siemens Deka Fuel Injectors, and a Walbro 525 fuel pump, with a blow through slot maf. Transmission is built to handle 600HP and 600 ft lb.
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Coyote19
- Posts: 8
- Joined: 2023 Nov 18, 22:04
- Location: Bensalem, Pennsylvania
- Vehicle Information: 2015 Mustang gt Twin turbo
On3 61mm turbos
Id1300x
Mbrp catback
Vp E98
Boostleash/co2
Re: Lopping at idle
Idle airflow tables. Have you dialed them in if it has them?
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MPCOBRA
- Posts: 21
- Joined: 2023 Nov 20, 08:17
- Location: Owasso, Oklahoma
- Vehicle Information: 2001 / Ford / F150 / XLT 4.6L 2valve / KHM3
The truck is turbocharged with a Pulsar T51R PSR3584 GEN II Ball Bearing Turbo 0.82A/R Stainless Steel Turbine with a 30.00" X 12.00" air to air intercooler, 80lb Siemens Deka Fuel Injectors, and a Walbro 525 fuel pump, with a blow through slot maf. Transmission is built to handle 600HP and 600 ft lb.
Re: Lopping at idle
Where are the tables located in SCT and how do I know what to change them too.
Side note I am not new to tuning BUT I still have a lot to learn so if I say something stupid my bad.
I am still trying to figure out what everything is and dose, there is a lot of info on this forum.
Side note I am not new to tuning BUT I still have a lot to learn so if I say something stupid my bad.
I am still trying to figure out what everything is and dose, there is a lot of info on this forum.
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decipha
- Posts: 5031
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Lopping at idle
make sure you have idle transient fuel disabled
under transient fuel >> scalars set No TFC at idle to 1
btw, KHM3 is an ODAJ0 / MPC-201 ecu. http://www.obdtester.com/ford-ecu-updat ... -12A650-KD
Your in the FBGI0 section. All good though.
under transient fuel >> scalars set No TFC at idle to 1
btw, KHM3 is an ODAJ0 / MPC-201 ecu. http://www.obdtester.com/ford-ecu-updat ... -12A650-KD
Your in the FBGI0 section. All good though.
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MPCOBRA
- Posts: 21
- Joined: 2023 Nov 20, 08:17
- Location: Owasso, Oklahoma
- Vehicle Information: 2001 / Ford / F150 / XLT 4.6L 2valve / KHM3
The truck is turbocharged with a Pulsar T51R PSR3584 GEN II Ball Bearing Turbo 0.82A/R Stainless Steel Turbine with a 30.00" X 12.00" air to air intercooler, 80lb Siemens Deka Fuel Injectors, and a Walbro 525 fuel pump, with a blow through slot maf. Transmission is built to handle 600HP and 600 ft lb.
Re: Lopping at idle
I don't see my section or strategy. Where should I be posting in.
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decipha
- Posts: 5031
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Lopping at idle
Good question. I expected the pcm tuning section but I had specifically wrote in there non ford back in the day. Corrected and moved.
all good
all good
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MPCOBRA
- Posts: 21
- Joined: 2023 Nov 20, 08:17
- Location: Owasso, Oklahoma
- Vehicle Information: 2001 / Ford / F150 / XLT 4.6L 2valve / KHM3
The truck is turbocharged with a Pulsar T51R PSR3584 GEN II Ball Bearing Turbo 0.82A/R Stainless Steel Turbine with a 30.00" X 12.00" air to air intercooler, 80lb Siemens Deka Fuel Injectors, and a Walbro 525 fuel pump, with a blow through slot maf. Transmission is built to handle 600HP and 600 ft lb.
Re: Lopping at idle
Where in my tune can I adjust the idle down table so it is smoother when the truck idles down from a rev.
it is jumpy when the truck idles down.
also I made a small idle adjustment at the throttle blade and the truck would not restart until I put it back in the same spot, what is going on with that.
I am using SCT software .
it is jumpy when the truck idles down.
also I made a small idle adjustment at the throttle blade and the truck would not restart until I put it back in the same spot, what is going on with that.
I am using SCT software .
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decipha
- Posts: 5031
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Lopping at idle
That's dashpot, info is on the homepage.
Sounds like you have some issues going on as that's not feasible.
Sounds like you have some issues going on as that's not feasible.
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MPCOBRA
- Posts: 21
- Joined: 2023 Nov 20, 08:17
- Location: Owasso, Oklahoma
- Vehicle Information: 2001 / Ford / F150 / XLT 4.6L 2valve / KHM3
The truck is turbocharged with a Pulsar T51R PSR3584 GEN II Ball Bearing Turbo 0.82A/R Stainless Steel Turbine with a 30.00" X 12.00" air to air intercooler, 80lb Siemens Deka Fuel Injectors, and a Walbro 525 fuel pump, with a blow through slot maf. Transmission is built to handle 600HP and 600 ft lb.
Re: Lopping at idle
Could the TPS have a bad spot in it, I don't think it is a motorcraft TPS.
but it didn't do it before I uploaded the last tune you sent me.
but it didn't do it before I uploaded the last tune you sent me.
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decipha
- Posts: 5031
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Lopping at idle
even with the tps unplugged it would still start up
only possibility is that youve closed it too far and it cant get enough air
only possibility is that youve closed it too far and it cant get enough air