I searched this forum looking for past posts about this but I couldn't find nothing. This one is very common situation, but can't find documentation for Suzukis.
Last saturday I replaced oil, oil filter, spark plugs and K&N air filter to my 06 GV, 2.0 manual. After looking at the air filter compartment I decided to do full clean on this part. I disconnected the battery completely while I was cleaning the whole thing. The battery lasted about 4 hours disconnected.
When I reconnected the battery, the car started normally but it was unable to sustain the idle speed. I kept depressed the accelerator pedal until the engine was warm but the car still kept stalling.
I read this is a normal behavior AFTER changing battery and a short trip will help the idle memory to "learn" to keep the engine running on idle, but the question is: is there any normal PROCEDURE to restore idle memory back to normal? I rode the car sunday about 20 minutes and then today (monday) about 45 minutes but the car keep stalling. Any ideas?
Sorry, I don't have any information on how to "restore the idle memory back to normal". I haven't heard that it is necessary.
My first thought might be the new spark plugs you installed. Bad plugs or mis-gapped plugs might cause a stalling situation. Also, loose or bad plug wires might cause a stall. Although a misfire is more likely than a complete stall.
Most stalling situations are caused by a lack of fuel or a lack of air. Plugged fuel filters will cause a stall at idle but allow the engine to run slowly at a larger throttle openings. Plugged air filters can stall an engine too, but they have to be severely closed off for this occur. Your newly cleaned K&N wouldn't cause this.
Sorry I can't be of more help. If you sort out the "restore idle memory back to normal" business, let us know.
I'm not aware of this "re-learn" theory in as such, the computer being disconnect from the battery should at least return the system to it's default settings and allow it to run adequately while it re-sampled and set new parameters. I'm guessing that you didn't re-connect a sensor or some how damaged wiring OR a sensor.
Any codes coming up on a scan?
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Many thanks for your replies and ideas about this issue. I already booked an inspection with my local dealer to check this issue. I'll change (not related to the stalling issue) my engine drive belt while been there.
I think 3 days of driving shall be enough to restore "idle memory" if any.
I'm afraid I (hope not) messed with the MAF and IAT sensors. Reading the manual, it say you don't have to clean these, but I did it. I removed them and saw these were clogged with some dark smog and I cleaned them. Not sure if this damaged the sensors, but it's the only different procedure I did. I'll recheck the spark plugs (the service manual at page 1A-55 tells you to check first spark plugs when improper engine idling).
I'm getting a scan tool reader to check what's going on with my GV. I'll keep you posting how this ends.
After reading your last post, I'm pretty sure you have damaged the MAF sensor.
You did not say how you cleaned the sensor, but I am guessing you actually physically touched it. That should never be done, there are specialized spray cleaners for cleaning the dirt and carbon off the hot wire, if that is the problem. latif is correct as well, over oiling the K&N filter can contaminate the hot wire and damage the sensor. I do not know what kind of MAF sensor the GV uses, but most modern MAF sensors pre-heat the wire to a high temperature just before the vehicle is started to clean off any contaminants. That is why they don't need to be cleaned separately.
1. Situation; car stalls at idle after battery disconnected for more than 5 hours. MAF and IAT cleaned manually (no carb cleaner used) and K&N air filter oiled per the instructions. Spark plugs brand new, oil and oil filter brand new. After battery reconnected, car stalls miserably at idle. All other gears (1, 2, 4, etc.) work fine. Driven more than 4 days to allow computer to relearn idle params.
2. Correction (at the Suzuki dealer):
a. A routine check with suzuki scanner didn't show any error condition or freeze frame.
b. Spark plugs were checked and calibrated to correct specs. Car still stalls at idle.
c. K&N air filter was discarded and a new original suzuki air filter was used. Car keep idle but with irregular shaking.
d. The air intake system was cleaned with carb cleaner (suspected to have K&N oil particles around). Car idle normally.
3. The bill: $122.00 (including engine drive belt replacement, air filter and carb cleaner.)
CONCLUSIONS: it seems the K&N air filter was doing some harm to my engine. Maybe I over oiled the filter, maybe the filter was slowly (and through the years) clogging the system, maybe is not meant to last 50,000 km., etc. My cleaning of the MAF and IAT sensors didn't damage them, they were working fine. The idle memory is erased by disconnecting the battery, but it is relearn relatively quick on a GV 2006.
... let me have a crack at this one.
Msolano it was your fault. You contaminated the MAF sensor so the car would not idle. No worries ... stuff happens ...
HOW TO GET OUT OF / AVOID SUCH
1. AVOID: No prob with the K & N filter. Remember that when you reoil the filter you must take your time and use the oil drop by drop. It diffuses through the filter material very well. Put a few drops on (after cleaning) and wait about 10 minutes. If there are any white spots then add s few drops more to those spots.
Don't let the size of the filter oil container fool you - there is enough in the K&N filer recharge kit to oil several thousand filters !!!
The first time i reoiled one of these (many years ago) it went a bit too far ... and had a small pool of oil at the bottom of my air box.
2. FIX: So you contaminated your MAF sensor ... Firstly, never try any mechanical cleaning: Qtips and air guns are a no-no (save for "experts"). What always worked for me is to swish it around in a cup of ordinary rubbing alcohol for about 2 minutes. Take it out and gently shake off the remaining alcohol. NO CLOTHS! Now rinse it with some deionized water and shake it off again. Leave it in a warm place to dry NO HAIR DRYERS! Pray ... then put it back into the car. Total cost < $1
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