[drdrizzy13]

I managed to reset my idle on my 2005 Reno, now the A/C stopped blowing... I can hear the compressor cut on but nothing blows out. Any idea what could have caused this?

 

[Max]

How did you "reset your idle" (it is computer & electronic sensor controlled).

And whatever you bumped, cut, moved, or otherwise disturbed in that reset process killed the A/C.
Check electrical connections and fuses first off while retracing your earlier steps.

 

[drdrizzy13]

How did you "reset your idle" (it is computer & electronic sensor controlled).

And whatever you bumped, cut, moved, or otherwise disturbed in that reset process killed the A/C.
Check electrical connections and fuses first off while retracing your earlier steps.

lol I didn't cut anything. I followed some instructions I found online in a manual.

Idle Learn Procedure

Whenever the battery cables, the engine control module (ECM), or the ECM fuse is disconnected or replaced, the following idle learn procedure must be performed:

Turn the ignition ON for 5 seconds.
Turn the ignition OFF for 5 seconds.
Turn the ignition ON for 5 seconds.
Start the engine in park/neutral.
Allow the engine to run until the engine coolant is above 185° F (85°C ).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
If the vehicle is equipped with an automatic transaxle, apply the parking brake. While pressing the brake pedal, place the transaxle in D (drive).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
Turn the ignition OFF. The idle learn procedure is complete.

That's exactly what I did.

 

[Max]

So you DID start with disconnecting / re-connecting the battery, right? If not, you need to.

I'd then re-do the entire procedure again, although I can't attest to its accuracy having never tried it as stated. Is the procedure from a Suzuki publication?

 

[drdrizzy13]

So you DID start with disconnecting / re-connecting the battery, right? If not, you need to.

I'd then re-do the entire procedure again, although I can't attest to its accuracy having never tried it as stated. Is the procedure from a Suzuki publication?

Yeah I did disconnect and reconnect the battery. It worked for a few minutes afterwards. Now it's not blowing. I actually got it from a Daewoo manual. Maybe that's the problem. I was under the impression they were pretty much the same though?

 

[Max]

got it from a Daewoo manual

You may be OK there. I'm not sure though.

I'd drive it. Often a few computer driving "cycles" will ward off the flukes and demons.

 

[P1NkY]

That's the idle relearn I've used with no ill effects. (05 Forenza)
Have you tried all the blower speeds? When the blower resistor goes out, you'll usually only get the "High" speed out of it.
Also try tapping on the blower motor housing with a large screwdriver handle or similar. If it starts running, the motor's brushes or bushings could be on their way out.
That is, unless yours has the automatic temperature control, in which case I would scan for codes or just drive it some, like Max said.

 

[7-even]

the idle learn procedure has nothing to do with the heat/ac. the reason you turn the AC on during the procedure is to put the motor under load, that way the idle drops and the ecu "learns" that it needs to raise the idle. it sounds to me like theres a problem with the heater. you should do what P1NkY says. check all the speed setting. see if it works on the higher settings. let us know what you find out.

 

[drdrizzy13]

the idle learn procedure has nothing to do with the heat/ac. the reason you turn the AC on during the procedure is to put the motor under load, that way the idle drops and the ecu "learns" that it needs to raise the idle. it sounds to me like theres a problem with the heater. you should do what P1NkY says. check all the speed setting. see if it works on the higher settings. let us know what you find out.

Thanks for all the suggestions guys. I left the battery disconnected a good 30 minutes or so and reconnected it. It cranked right up and the a/c works and the idle is fine.

I was wondering if maybe it is some type of electrical problem. I also run into a few other odd issues with the car. The cruise control only works 50/50 and the low fuel light doesn't come on anymore.

 

[P1NkY]

Kooky.
I'd check the ground connection for the ECM.
It is called G104 and it is on the lower right side of the engine, under the starter motor.
Make sure it is clean and tight.
While you're at it, check G105 and G107, too. They are the main ground connections from the battery to the engine.