Idle speed change for Alfa 147 1.9 JTD 8v

[dusan147]

What is the way to change idle speed (850rpm is a factory value) for 147 1.9 JTD 8v?

[ipejasinovic]

In ECU file look at position 71C6C - 71C6D & 71C70 - 71C71 or 71CDA - 71CDB & 71CE0 - 71CE1, should be 52 03 in hex. When you swap bytes, you'll get 0352 in hex, which is 850 in decimal. Now, take calculator and make yourself a value you want...

[dusan147]

Thank you - I will try...

[smirnoff_rules]

God there's some clever ~~~~ers on here

[Meat-Head]

God there's some clever ~~~~ers on here

Yeah i was thinking more crazy.

MORE MORE MORE

[smirnoff_rules]

l have been around lots of car info sites over the years .. Russian French u name it . but this has become a league of its own

[dusan147]

By use of ECM2001 I have 52 03 (red frames) what is 03 52 (hex) or 850rpm (dec)... New values are 03 84 i.e. 84 03 (new in red frames) what is 900rpm... Is it correct modification?

[ipejasinovic]

Yes. Just write 84 03 on both locations.

[dusan147]

[dusan147]

Me again - how to use ECM "Hex window" to write 84hex in mentioned location?
a) Scroll mode OFF
b) go to proper address
c) add/sub value of 1 or 5?
Is it the simplest way?

[ipejasinovic]

Take simple HEX editor and edit value (I'm using HxD). Forget that integrated in ECM.

[dusan147]

Checksum problems?

[ipejasinovic]

You can do it in ECM, alongside modifications. Also, WinOLS can make corrections or you can use some stand alone tool like Checksum Corrector...

[dusan147]

Ok - this is clear for me - thanks ipejasinovic...

[euroscan]

- if this also working for ECu M1.5.5 alfa romeo 156 ts 1.8 '98 year ?