2G DSM high idle when warmed up. P1105 P1103 P0505

[Wilsonf4i]

It'll rev to 2k - 2.5k it will sometimes surge up and down between 900 and 1500 random at stoplights on occasion. Codes P1105 P1103 P0505. P1105 only code being active.

Has anyone had this issue and remedied it?

I did a boost leak test on it 2 weeks ago. And this has been going on for over a month. Just replaces throttle body seals and fuel filter. That's about it that It.

Is it the IAC? That simple?

 

[Vegas Smith]

I hate to say it, bust do a search on biss and isc adjutsments and that will net you A LOT of information. Many people have asked this question because it's so common. I always tell people to check for leaks at the isc gasket (hard to find on a normal blt), try upping your coast idle offset (?), and make sure you have zero vacuum leaks.

 

[pauleyman]

It's not electrically possible for the car to idle above 1500. If it does on ocassion make the throttle is actually closing. Check cable.

 

[Wilsonf4i]

It's not electrically possible for the car to idle above 1500. If it does on ocassion make the throttle is actually closing. Check cable.

Cable is loose. It'll also rev and bounce back and fourth 800 to 1.5k. I just checked the IAC. It read 44 across the board I triple checked. I'm going to roll another boost leak test.

Can I check the pressure for the throttle body through the turbo or do I need to hookup my boost leak tester on to the intercooler pipe @ throttle body. I'm going down the ts procedures @ https://www.ecmtuning.com/wiki/idlesurge

 

[Wilsonf4i]

Throttle cable was getting stuck. Thank you for the help!

 

[DeathJunior]

This may be my problem with my idle spike.

Awesome. I'll check this when I work on my talon next.
Thank you, I have no idea that it was electrically impossible to idle above 1500.

 

[Wilsonf4i]

This may be my problem with my idle spike.

Awesome. I'll check this when I work on my talon next.
Thank you, I have no idea that it was electrically impossible to idle above 1500.

Two bolts holding a bracket behind throttle body area fix it. Loosen the cable. Tightened.

 

[Jordyn33]

Mine does spikes up and down after I deleted emissions and put new intake manifold on and I can't fix it by adjusting idle either. Any ideas?

 

[Vegas Smith]

Air leak.

 

[motomattx]

Or you have eliminated the water lines to the fiav.