tsitalon1

iTrader: (3)

Any help would be appreciated as the weather is getting colder and OL warmup would fix my problem

WytWun

tsitalon1, based on reading an 88590015 disassembly you might want to see whether address 11AA rather than address 11AE provides the control you need. You should be able to log short term fuel trim and coolant temperature to show that the STFT is 0 below the threshold and then starts changing rapidly (based on O2 sensor input) once the coolant temperature reaches/exceeds the threshold.

rich3389

iTrader: (1)

I'll try this and report back.

tsitalon1

iTrader: (3)

Rich, how did the testing go?

I can't test as I have to send the tranny off to get rebuilt.

Ghostdriver22

Also trying to adjust thermo main /ac fan cycle. 05 evo 8 5spd. Fan randomly turns on when engine is cold. AC on or off, but just main fan infront of turbo.

Any help?

Email for pics of ecuflash/tephra graph

James6891@MSN.COM

todd6027

iTrader: (10)

Possibly the fan control or pwm unit bolted to the fan housing itself

tsitalon1

iTrader: (3)

Keep this thread on topic please.

This is for the startup OL to CL switchover point.

rich3389

iTrader: (1)

Changing the address to 11AA has seemed to work, although I haven't done any datalogs to prove it. but it does actually stay in open loop for a minute or two upon first start where before it was within 10 seconds.

tsitalon1

iTrader: (3)

This is great news!

Now I'll have to wait to test mine until my tranny gets back.

Ghostdriver22

Thanks sir!

merlin.oz

I think I would agree with WytWun (Andy) that 11AA is the true address.
It is 11AA on the 8857 ROM.

11AE would be Closed-Loop reintroduction time after decel fuel-cut (I think - maybe).

tsitalon1

iTrader: (3)

For clarification, do you mean the 8859 Rom?

Rich and I are both on 8859.

merlin.oz

yes

tsitalon1

iTrader: (3)

Thank you!