Stock truck idle problems after flash..?

[samh_08]

Ok. Would trying to do a full flash of my tune do the same? I thought you weren't supposed to do full flashes if you weren't changing OS's..?

[joecar]

I would try full flashing the stock tune, and see what your idles does...

Then cal-only flash you changed tune, and see what that does.

Typically, there's no point in doing a full flash if you're not changing the OS... but this is a special case.

[samh_08]

I just tried doing a full flash of the stock tune. It still does the same thing, but on a MUCH smaller scale and its barely noticeable. When I had the modded file in, it was pretty noticeable. I narrowed it down to having to do with turning the A/c on and off. I even tried putting the desired idle speeds at 1200 with the same result. Whats the deal...?

[joecar]

My guestimate is that something has physically changed with the TB/IACV by coincidence with when you flashed it (i.e. not necessarily caused by flashing).

[samh_08]

Its not throwing any codes..? What am I supposed to do about this? Im not just going to throw parts at it. Everything else is completely fine and normal. Is there something else I can change to try and remedy this situation?

[joecar]

You said the idle is different...

I take the problem still happens with the stock tune...?

Start with unplugging/inspecting the connectors to the IAC and TPS, and then remove the IAC and inpect/clean the pintle and passages...
might also clean the throttle blade;
see what happens...

do you have cable throttle or DBW throttle...?

[samh_08]

DBW throttle body. I just checked connections and all that good stuff. No issues what so ever. With the stock tune, I dont think the average joe would even realize there is a issue, but yes it still exists in the smallest sense.

When I flash my tune in the PCM, the truck responds to everything I've changed, but it does not want to idle consistently when its in gear, or the a/c is on. I've messed with all of the A/C idle tables with no luck. Is there a known issue in this OS or why am I having such odd problems with a stock truck that was fine before tuning?

[Highlander]

Get it reflashed from a tech 2.

[samh_08]

Get it reflashed from a tech 2.

Could you please elaborate? I know what a tech 2 is and all but I want to know why I should have to do that..

Thanks

[Highlander]

Because that will ensure you get the latest calibration and that everything get's put back in it's place. If your flashing back is not working at all I am sure this will fix it.

Go to the scanner... activate DVT and reset idle trims and all fuel trims.