manual or auto?

pulled the error codes?

i'd be looking at the o2 sensors & are you accounting for the larger rolling diameter of non standard wheels?

what's going to work out cheaper... burning fuel @ 22l/100kms or a pair of o2 sensors, should be able to pick them up for around $100 each off ebay.. check 4wd products store out

no you can do it with a paper clip, last section of the first image walks you through the process.

Oh Awesome! I will try it when i finish work tonight, and let you know how i go.

Thanks for that.

It'll usually run pig rich with a failed MAF, you'll be able to smell the fuel in the exhaust

how did you get on with this??

You can get cheap O2 sensors, almost all sensors I've seen on zooks are the same thread and diameter, I chucked a universal 4-wire sensor in my g16b with no problems, think I paid 40 or 50 for it shipped off eBay.
http://www.ebay.com.au/itm/OXYGEN-SENSO ... e9a&_uhb=1

you can get plug & play o2 sensors for about the same price off ebay, check out 4wd products. the universal ones require a bit of a fiddly adaptor to join them in with the original wiring.

12 is usually normal conditions, IE. no errors.
you will usually get a 12 if your check engine light never comes on.

2 plugs you say, one might be for the auto TCM.

i just checked my auto SV620 & there is only 1 plug by the airbox, it's a 6 pin plug & has 2 blue, 2 purple, 1 black, 1 white wires.

have you disconnected the battery recently as that will clear the codes & yeah from memory 12 means it's all clear.

weird, never seen the black plug in my travels, the clear/yellow is the one you want... i'm guessing the other one is for the auto, but it's strange mine doesn't have one being an auto too?

disconnect your battery for a few minutes & press the brake a few times to drain any residual current, this will clear the logged codes & give you a fresh base to start from.

on another note, what sort of fuel are you using?

ahhh by disconnecting the battery before hand you've cleared any logged codes, hence it giving you a 12 (all clear).... give it a week or two & pull the codes.

you are living up to the reputation of suzuki owners being tight asses, put a tank of 98 in it & see how it goes.

You can check your error code as soon as the check engine light comes on, even while your car is still running.

Oh okay. How do you do that? Just start the car and look at what the engine light does?

Yes, same thing as Atari has mentioned, by shorting the diagnostic connector pins, I was just saying you can do it with he car running as well.

personally i wouldn't do it, you'd think the FSM would mention it if it was the thing to do?

put a tank of 98 in it & see how it goes.