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Old 09-01-2012, 03:36 AM   #1 (permalink)
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First I have a 2005 Suzuki Forenza.

So I was replacing the spark plugs a few months back and sorts guess the firing order. Not on the Ignition coil since those numbers are on the pack. Anyways can someone please verify this is correct.

Looking into plug holes from left to right I used firing order.

4 3 2 1 I'm fairly sure that's correct since its used on the 06 forenza.

Now for the most important question. Back in January my Engine locked up. I paid for a rebuild which all worked fine except for p0300. The mechanics assured me it was a ghost code and sent me on my way. So in August I decided to have another (My regular mechanic) mechanic check it out. He also assured me it wasn't misfiring.

Sometimes I can actually feel it miss and it only happens under load. My scanner shows p0300 and p0455 (I think this is because after market gas cap). So I'm fairly lost as to what I should do. I've read a lot about Crankshaft relearn. I'm not sure this will fix the issue though. The misfire really only happens if I floor it or cruise at 60 MPH for more than 20 seconds.
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Old 09-01-2012, 02:39 PM   #2 (permalink)
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The misfire could be due to a bad cam sensor or one going bad. You should also check your spark plugs make sure they're ok and everythings plugged in. Also an aftermarket gas cap should not cause a code. You should look into this it could have something to do with your problem
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Old 09-01-2012, 07:17 PM   #3 (permalink)
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P0300 is fixed. Apparently from left to right the Cylinders are

1 2 3 4

Strange. As far as the p0455 it hasn't come back since I replaced the gas cap again. Thanks for the help!
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Old 09-02-2012, 02:19 AM   #4 (permalink)
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Nevermind I lied. P0300 is still present. Car doesn't seem to run any different.

I was changing the spark plugs, wires, and valve cover gasket whenever I looked at the timing belt and noticed it wasn't all the way on the "teeth". It was 75% on. Belt looked fine so I left everything alone.

Another thing to note is whenever I get to 50 MPH (Forenzas sweet spot aka whenever the torq locks up) I here what sounds like a turbo. I assure you this car has no turbo is this normal? My inspection is coming up soon and I'm running out of ideas.
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Old 09-03-2012, 02:43 PM   #5 (permalink)
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ok is the code constant or do you go for a few days before the code comes on? there are a couple of things you could try. you could try to replace the cam sensor maybe the crank sensor. then what you can do is this; clear out the codes and clean the iac valve. what youll need is a few rags some maf (its safe on electronics and i think plastics) sensor cleaner and a screw driver. what you need to do is remove the intake box above the throttle body. then on the firewall side of the throttle body to the right there is a sensor IN the throttlebody. unscrew it and carefully remove it. DO NOT push on the end of the sensor if you do you could break it. if its covered in black stuff it needs to be cleaned or replaced.now if cleaning; liberally spray it down with the maf cleaner spray youll see the dirt start to clean off. just spray it clean. then, looking at the throttlebody, on the right side of it you should see a flat plate with 4 screws. loosen and remove the screws or at least 3 of them so you can swing the plate to the side and out of the way. behind it are the air passages for the iac sensor. inside the the throttlebody youll on the right side youll see a hole, that leads to the air passageways. put a rag covering that hole to catch any spray that comes out when cleaning the air passageway so it doesn't get inside the throttlebody. you might want to put a rag under the airways also. then spray the airways with the maf cleaner to clean out any dirt. when done make sure everything's dry, the spray evaporates pretty quick, put everything back together. now start the car IT WILL RUN ROUGH AT FIRST. take it for a little drive. that might help clear up the code and help the car run a bit better. any questions or if you dont understand something let us know. also let us know what happens. if nothing else this should keep the code off for four or five days which will be long enough to pass inspection.
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Old 09-05-2012, 07:20 PM   #6 (permalink)
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Alright I'll try that. Its constant. I do know the MAF looked fairly black last time I was cleaning up the engine bay.
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Old 09-06-2012, 10:24 PM   #7 (permalink)
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The Reno/forenza has a map sensor you just use maf sensor cleaner because its ok to use around electronics and rubber/plastic. Let us know what happens
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Old 09-05-2013, 12:14 PM   #8 (permalink)
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So, did it work?
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