New Code, very weird
After yesterday's P0128 and P0155, this morning I developed a P1353. I looked it up, and this came up:
- Faulty Spark Plug - Faulty Ignition Coil - Intake vacuum leak - Faulty Camshaft Position Sensor - Ignition Coil harness is open or shorted - Ignition Coil circuit poor electrical connection Symptoms: Engine vibration at idle, lessened if I gave it some gas. Also made a sort of thumping noise, and I could feel vibration if I put my hand on the crankcase. When I got home, I tried a parked version of the Italian Tuneup, revving it to 4500 rpm a few times then holding it at 2000,2500, and 3000 a bit. The shaking stopped. Will be taking it in tomorrow to put in the new tstat. Mechanic thinks that will clear the P0155 as well as the P0128, but now I'm worried. :yikes: Please advise... feeling the bmw owner paranoia now. |
Sounds to me like you're running on 5 cylinders. With those codes, I would expect a bad spark plug or coil pack.
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Mostly likely a bad coil. Swap the coils between 1 and 6 and if the code move to 1 you found the problem. If the code doesn't move to 1 replace the spark plug in cylinder no.6.
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How's your VCG? If it leaks, the plug will be covered in oil, which lead to the misfire.
P1353 is a misfire Cylinder 6 with fuel cut-off. Oil run to the rear of the engine when leaks from VCG. |
The VCG was replaced shortly before I bought it, supposedly. I wonder if they bothered to clean up while they were doing it, since the engine is dirty as hell (oil is already dark after 2000km).
I'll check #6 in the morning, though I'm puzzled as to why the engine would run smooth again after revving it for a while, and why it was only shaking at low rpms. Thanks, guys. I'm puzzled and worried, but undaunted. |
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Ahh... was going to do the plugs in the spring... wanted to do it myself, but too cold to do it... will def check it out tomorrow, and just have the mech do it. :)
Thanks! |
I agree with all the suggestions here. Another thing you can do is pull the plug and see what it looks like. Is it fouled out with carbon or oil? Electrode worn out? Plenty of info out there on how plugs tell a story. Also, as mentioned by others, the top half of the plug and/or wires may be saturated with oil. You can try swapping plug wires around, too (if they will reach), to see if the problem moves with the wire. A dead or missing cylinder can sometimes trigger the other faults/symptons, such as a perceived vacuum leak, faulty camshaft position sensor, etc.
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P1353 misfire cylinder 6with fuel cut off
P0128 coolant thermostat(coolant temperature below thermostat regulating temperature P0155 o2 sensor heater circuit (bank 2 sensor 1 above is word for word out of my bentley repair manual for our X5`S hope this helps. |
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Hmm, I wonder if the severe cold got this started. Tonight, I revved a bit in the driveway, then drove it like I stole it. Misfire is gone, CEL is off. Will still check things out and swap out the stat in the morning.
Italian tuneup FTW :thumbup: |
@puddinboo - Changed the oil just 2000km ago, also stuck my finger in the crank case and it's pretty dirty in there, so I'll probably drop some seafoam in there change the oil again next week just to start cleaning it out.
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If you haven't cleared the codes be sure to do so and see what returns especially if you have no symptoms of low temperature and you no longer have the miss.
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Prof: hit the Search Tab and plug in Seafoam...
A few here are fans, but most of us are not. Doubt there is a car on the planet with that mileage that doesn't have some cosmetic gunk, when one sticks their finger down the oil fill orifice. |
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Never needed it, but I would use Lubro-Moly ProLine engine flush if I had a BMW to de-gunk.
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Alas, I live in the People's Republic of Canada, aka Cold Hell. Can't find that anywhere here :(. Guess I could ebay it and just do it on the next oil change.
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Do you recall his name? I'd like to check him out myself. The guy who's gonna do the tstat is a bit far, though I didn't mind in this case because I wanted to drive and burn off some of that mayo. ;)
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Thermostat swapped out. Another Wahler. Codes cleared. Up next, Italian tune up and oil change :P
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