99 Camaro having a cold start issue

[2000ss]

Hello I?m looking for the start up airflow table for the 99 software having a cold start problem now that it?s like 30 degrees In the morning if anyone can point me in the right direction, I?m at work at the moment so I cannot post up a tune

[Ben Charles]

Without file hard to say… could be fuel related and just not enough air.. I assume this isn’t a stock car anymore

[2000ss]

Without file hard to say? could be fuel related and just not enough air.. I assume this isn?t a stock car anymore

Well I really just need to know where the start up air flow table is/which one

[RDF1]

Try starting here if your wanting to adjust the starup airflow.

Press CTRL+N to open navigator, Type in 12146 and it goes to this table.


Engine - Idle - Airflow - Startup - [ECM] 12146 - Idle Startup Friction Airflow Initial vs. ECT: Initial value for Friction Airflow, decay starts from this value.

[2000ss]

Try starting here if your wanting to adjust the starup airflow.

Press CTRL+N to open navigator, Type in 12146 and it goes to this table.


Engine - Idle - Airflow - Startup - [ECM] 12146 - Idle Startup Friction Airflow Initial vs. ECT: Initial value for Friction Airflow, decay starts from this value.

Got it thank you

[2000ss]

morning ride.hpl ss test idle eq ve tuningx.hpt

ls2 bottom end
229/244 cam motion
ls3 top end
92mm Holley
99 camaro
problem is only when its cold i tuned the start up air flow but made little difference, car stays lean until up to operating temp

[2000ss]

morning 2.hpl

so this morning it was colder (38F) and it shut off on me as im pulling out of my backyard and im getting a light surge when coming to a stop or light throttle (when cold)

[Alvin]

The IAC counts are maxed out in your log. The IAC cannot give the engine enough air.

Here is a link we send to our customers on how to adjust cable throttle bodies.
https://www.pcmofnc.com/2021/03/05/i...throttle-body/

[2000ss]

The IAC counts are maxed out in your log. The IAC cannot give the engine enough air.

Here is a link we send to our customers on how to adjust cable throttle bodies.
https://www.pcmofnc.com/2021/03/05/i...throttle-body/

So I should drill a hole in my throttle body? And re tune the iAC steps ?

[2000ss]

ss test idle eq ve tuningxx.hptmorn.hplomw home.hpl

so i drilled a hole in the throttle body and end with a 11/16th drill bit, i got the car to start without throttle in the cold but the rpm is still hunting somewhat