ECMlink Setting my idle correctly.. BISS Adjustment?

[Maxthepersonz]

I have a 1g with some strange issues. I need to set my idle to about 1000rpms I believe and am having trouble doing so. Can someone give me a full write up on how to do this correctly? I was super patient with making adjustments and nothing ever changed.. Reading 120 ICS Position drops down to maybe 90 sometimes and goes back up. Also is reading about 170 consistently on the learned idle. Tried grouding timing and the other thing in link with no luck. Car is speed density with a basemap with some tweaks currently before tuning. Sorry If this is terrible I have been on 14 hour days and I am exhausted.. Tune coming up soon.

Also I am very new to ECM link. Do I need to look at my TPS before I try to set this? I think it was reading 1% in link when I was off of the throttle but the guy who remote tuned the basemap onto it made it read 0% and told me I should correct it. How do I go about this?

 

[o0GuitarKid0o]

First off you need to ground a pin on the obd1 port (sounds like your useing a logger so just leave it plugged in )

Then around your battery you'll see a random connector with a cover comeing out of the harness it will have one wire and kind of looks like a knock sensor plug

Ground that single wire to a good ground point (I used alligator clips)

Now you have tighten or lossen the biss till you read roughly 750 +/- 50 rpms

Note: when you ground the pin on the obd1 port and the connector by the battery(timing adjust) on the fire wall you stop your ecu from adjusting idle(isc) as you adjust the biss I like to give my car idle ing around 850 an 900 at the max for my fans

Turn the car off and remove the ground you made by the battery and restart your car

I find it hard to get my isc around 30 ( opps) so I kind of let it do its thing

I'm more detail http://www.vfaq.com/mods/BISS-1G.html

 

[tmoney20g]

you can ground the pin using ecmlink as well. also for tps adjust, key on, start a log, go full throttle, hold for a second, let off, stop log. right click the screen, toggle TPSadjust, hit enter, hit accept, done.

ISC at a perfect idle should be at 30.

also log your idle switch, verify it reads 1 when you're off the throttle.

 

[Maxthepersonz]

First off you need to ground a pin on the obd1 port (sounds like your useing a logger so just leave it plugged in )

Then around your battery you'll see a random connector with a cover comeing out of the harness it will have one wire and kind of looks like a knock sensor plug

Ground that single wire to a good ground point (I used alligator clips)

Now you have tighten or lossen the biss till you read roughly 750 +/- 50 rpms

Note: when you ground the pin on the obd1 port and the connector by the battery(timing adjust) on the fire wall you stop your ecu from adjusting idle(isc) as you adjust the biss I like to give my car idle ing around 850 an 900 at the max for my fans

Turn the car off and remove the ground you made by the battery and restart your car

I find it hard to get my isc around 60(half) so I kind of let it do its thing

I'm more detail http://www.vfaq.com/mods/BISS-1G.html

This is the proper way to do it running v3 link?

 

[Maxthepersonz]

you can ground the pin using ecmlink as well. also for tps adjust, key on, start a log, go full throttle, hold for a second, let off, stop log. right click the screen, toggle TPSadjust, hit enter, hit accept, done.

ISC at a perfect idle should be at 30.

also log your idle switch, verify it reads 1 when you're off the throttle.

So my ISC is only going to read 30 if I am at a 750rpm idle is what you're saying. What about running at a 900 to 1000rpm idle? I really want to make sure I am doing this right I read it can damage sensors by not doing so.

Also can't I view my TPS voltage in link, adjust it to read .63v like it should be, and then set the throttle correctly?

 

[tmoney20g]

voltage or tps at all for that matter, doesn't matter when you do tps adjust. that's the purpose of it. I run a ford tps didn't care where it was set, did tps adjust as shown above, and ecmlink adjusted the scale and offset so it reads from 0% to 100%, no matter what the voltage is.


doesn't matter what rpm your idle is set to, iscposition should be 30 when you're at your target idle, in a perfect world.

 

[Maxthepersonz]

voltage or tps at all for that matter, doesn't matter when you do tps adjust. that's the purpose of it. I run a ford tps didn't care where it was set, did tps adjust as shown above, and ecmlink adjusted the scale and offset so it reads from 0% to 100%, no matter what the voltage is.


doesn't matter what rpm your idle is set to, iscposition should be 30 when you're at your target idle, in a perfect world.

Sounds good thank you man. So even with my cams and stuff I should still be running close to a factory idle? Learned idle doesn't matter as much?

 

[tmoney20g]

every car is different, i personally can't get my isc in line, but that's my problem with all the weird stuff on my car. i never even looked at or messed with the learned idle or the idle stuff in the DA tables.

 

[o0GuitarKid0o]

The closest I ever got with a good idle on my isc was 40 she used to max out alot

And ecm link ,stock ecu ect.. don't matter to my knowledge you always have to adjust idle and isc this way unless you delete the isc or what ever people do these days

 

[Maxthepersonz]

The closest I ever got with a good idle on my isc was 40 she used to max out alot

And ecm link ,stock ecu ect.. don't matter to my knowledge you always have to adjust idle and isc this way unless you delete the isc or what ever people do these days

So it doesn't matter to much what it reads? From what I hear if you do that you'll burn the motor out of it. Can't I ground that pin in ECMlink? Are you using ECMlink?

 

[Maxthepersonz]

I feel stupid for making this post... Lol how important is it really if anyone knows? My car is getting tuned on Friday so it would be very nice to get a reply. I can get a steady idle, Just cant get that to read correctly in link.

 

[Maxthepersonz]

IdleSW says 1- normal?

 

[tmoney20g]

I can teamviewer in and set your ecmlink up, it'll save your "tuner" a LOT of time and headache. Up to you.

 

[o0GuitarKid0o]

So it doesn't matter to much what it reads? From what I hear if you do that you'll burn the motor out of it. Can't I ground that pin in ECMlink? Are you using ECMlink?

I wish I had ecm link
I use a data logger that's rigged up to for engine logging as well as transmission logging it grounds when it's connected

I'm not familiar with ecm link but I've read you can ground it via a click of the mouse

But yes your isc motor may loose some life if your always maxing it out but it's not Goin to fail as soon it opens or closes fully

if it is maxing out maybe you have a bad leak somewhere causeing the isc to close fully it will do that so it idles correctly?

it's not going to matter if your isc readings not 30 at idle maybe if it's maxed out when your idleing I'd be concerned but if you get in the rough area than just see how it acts when your done an keep an eye on it