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Discussion Starter #1
Yes i have searched the forum for a good while and im shure the correct awnser is in here somwhere.
(so sorry for repeating q, and no need to point finger.)

Car
Suzuki XL7 2002
2,6l V6 Manual trans
AC
~220.000km
No ODB error
All original.

History
Alternator&fanbelt broke (litterary)
Alternator changed (and belt)
Battery changed
And now, Startermotor changed. (350$ for startermotor-change (after arguing from a higher amount) :mellow: )

I know putting on the AC makes it hold its Idle.
But it does not seem to learn its Idle rpm.

Found a post that said drivefor a while and go trough all gears or something, but wont hold idle.

Any way of forcing it to learn idle? Mecanics PC tool?
Start stop ac on off bla bla bla bla?
(Cant turn of AC for 2 sec, then it has stalled)
 

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First try a few start and stop trips, to see if the ECU will adjust accordingly. ;)
 

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Answer

Ok - I've run through this a few times with my 2001 manual.
Basically - the computer has lost its mind. It has a setting for regular driving and a separate one for with the AC on.

So - the "easiest" (and it still sucks) way to do it is, sit in the driveway with the car in neutral. Give it some fuel to keep it running. Slowly let off the fuel till it almost stalls, then give it a bit more fuel to keep it running. Repeat. You have to get it to learn that engine "stall" speed/fuel requirement ratio. Repeat about 20-ish times and you should be all set.

Now repeat the whole thing with the AC running as your idle speeds are different with the AC running.

In the future - there's a trick to pulling the battery so that the computer doesn't forget all that data - but I don't know the trick - it's the way to ground the cable or something.
 

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Discussion Starter #4
Hi again.
And tnx for youre replyes, all was tried.

After many many many attempts it finaly holds idle (it seems for now)

What seemd to work was to hold the trottle steady at wanted idle, and turn AC on&off many times in a row (letting the rpm stabilise between on/off)

Holding trottle at ~800rpm
At first the rpm went up to 1500 when turning AC on..
But then the difference started to fall and after maby 20 times on and off, the rpm with and without AC was the same...

When I then lett go of the trottle the idle was holding...


Almost letting it stall and give it a bit more and so on, did not make a difference, tryed it over several days in different ways...

Maby my car is a wierd one, but, the above seemd to do it.
(i will be posting again if the fix turned out to be a coinsidence)
 

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99 Tracker, 5 door, 2L, 4x4
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All that is foreign to me... :confused:

The ECU should reset to factory matrix when de-powered..

The learning state is to adjust for spec, 14.7-1 FAR..

I would presume that you may have other issues not yet investigated..

.... Philip
 

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Discussion Starter #6
Hi
My writing or the problem? :p
I know my gramar & sentence building is not perfekt.

The whole car is an issue. ;)
Today my GF had to use the XL-7 4x4 to work because it has snowed over 1meter in under 2days.:frozen:
She had it stalling 7 times during the 12minut ride to work...
So i kind of had to try more methods of getting it to hold idle.

I se that the once answearing is from USA & Canada.
Didnt think about mentioning that me&my car are european/norwegian, if it makes any difference. ECU shold behave the same?

Taking it for a drive now, se if it holds.
 

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99 Tracker, 5 door, 2L, 4x4
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I se that the once answearing is from USA & Canada.
Didnt think about mentioning that me&my car are european/norwegian, if it makes any difference. ECU shold behave the same?
That information is always welcome and most time required..

Do you have any warning lights on the dash, and are they working as they should?

Could you check for a compliance (0BDII) sticker/plate under the hood/bonnet,

There should also be a test port close to the steering column under the dash..

.... Philip
 

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Discussion Starter #8 (Edited)
Back from the drive. 20minuts and no problem at all.
The needle setteled as it shold every time i release the trottle from any rpm.

So the problem seems to be FIXED. :D:D:D

No warning lights.
No OBD-errors.
(have a OBD-reader so i can dignose before i bring it to the expensive Auto mechanic )

And the car just came back from the mechanic after they changed the starter.
They looked over the car and only comments was front brakepads and 1 inner stearing-arm, and they toped of the coolant and changed 1 lightbulb.
(got no idea about the english words for this things :p )

Now that the idle holds the car is all up&running as normal.
-9deg. C (15 deg. faren) outside now, no problem starting. ^_^
 

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99 Tracker, 5 door, 2L, 4x4
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So the problem seems to be FIXED.
Great that it is running now...

Is that OBDII, or EOBD?

I presume you have a "code READER" not a "LIVE DATA SCANNER"

We are here to help, keep in touch..

.... Philip
 

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Discussion Starter #10
Hi again, tnx for interest. :)

If its OBD2 or EODB does not matter? Its the same datafeed and the same plug.(?)
As far as i know, or as far as my OBD-reader knows.

It is a Live Datafeed trough Bluetooth, so i can have speedo, temps, and all that good stuff on display live from the OBD-port while driving.
I can reset the errors.

(But cant do any other changes. like setting the idle rpm,
that the automecanics can do with their PC-tool-thingamajing )
 
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