Idle drop when A/C is on

[galantrevolution]

My car drops idle at 500 rpm when the a/c is turn on, the car runs good when a/c is off 800 rpm I'm running ecm link .

 

[KiNgMaRtY]

Check your ISC. It could be the issue

 

[prove_it]

What's your ISC position at idle with no loads on car?

 

[galantrevolution]

With no loads is 0

 

[galantrevolution]

With loads jump up to 111 and stay there also look my idle drop

 

[tektic]

There's an isc test code on dsmecu.com. it lets you test all the different steps to see if all your coils are functional. It sounds like the isc is shot.

 

[EMX5636]

There is an idle adjustment in DSMLink to increase idle while the A/C switch is turned on.

 

[galantrevolution]

To do that I will have to take it to a shop the does the tuning ? I'm asking be cause I'm new on the tune theory and when I got the car the previous owner had it install

 

[EMX5636]

No, if you have a laptop and the DSMLink cable you can do simple things like that by yourself. If you read through the Wiki's on ECMTuning.com there are lots of how-to's and information. If you aren't comfortable with that, I'm sure someone around you is proficient enough to help out.

 

[galantrevolution]

Don't have the cable or the software to change that up, I found a shop here in Vegas it charges $250 to do or adjust any ecmlink tune

 

[vr4hotness]

I have the cable go to mod and you can use my cable

 

[galantrevolution]

Sounds like a plan vr4hotness . do I need the software on a laptop for the ecm

 

[FlyingEagle]

Yes.

And you will need to contact ECMTuning for their access codes/username to the forums and software updates as you go along.

Don't update the ECM with a software update until you confirm if that will wipe out the tune on the chip.

I say this because you are not starting out fresh, you have a tune, so be careful when updating later on.