Rough idle and CEL **UPDATE**

JayX5 · #1 03-22-2007, 05:04 PM

Yesterday we had some heavy rain so I decided to let the freshly detailed X5 sit in the garage. Today, I started the X5 and noticed the idle was a bit rough, but the RPMs were not fluctuating. On top of that the X5 would shake a bit at idle and when I reved it a bit, it seemed as if the rpms did not want to move much higher. I shut it off and restarted it and took it around the block. Everything seemed normal. No vibrations, no noises, everything perfect. The problem now is the CEL and I checked the code and got the P1345 (cam position sensor circuit malfunction). According to a thread from hewre, it says that cyclinder #2 misfire. It may be the coilpack but the weird thing is that my X5 is running perfect now. Has anyone had the similar code on their X5? Could this be due to the very moist weather from yesterday? Please let me know how I should get this fixed, can I just clear the code?

Thanks,
Jay

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bobbyp · #2 03-22-2007, 06:34 PM

This happens occasionally to all BMW models. If it was intermittent, the code will clear on its own after x amount of recycles (start/stop engine). Sounds like you had *something* unusual happen. Bad gas causing a slight misfire, slight misfunction in coil pack, etc... You might have to replace something shortly - either a plug or pack. Suggest waiting for it to clear (or have AutoZone clear it) and see if it pops up again before doing anything.

noncom23 · #3 03-22-2007, 07:07 PM

Good thread

msammy · #4 03-22-2007, 10:20 PM

I've had the same thing happen 3 times in the last 2 months or so but no Check Engine Light. Just rough idle upon morning startup, back out of garage roughly, then put in drive and drive away smoothly with no problems. I have 73K miles and always serviced at the dealer on time. Strange rough startup, but I'm not worried since my X hasn't failed me yet!

JayX5 · #5 03-27-2007, 11:51 PM

Thanks for the input guys, but the issue has came back! After a while the idle and drive was fine and smooth and a day later the CEL disappeared. I had the X5 sit for a day in the garage and after that, I had the same problem. The idle was rough and everything was shaking with the CEL back on.

As bobbyp said, the bad gas may cause a misfire. I put premium BP fuel into the X and filled it up last sunday and I believe this may have caused the problem. For some reason the fill up station had prices better than the other gas stations so I decided to fill it up there.

At the same time, I had my other car filled up there due t the good prices and found out they had a problem with their gas and the station decided to price the regular, plus, and premium all at the same low price. So I filled up my other car with premium as well. Now my other car is experiencing a rough/ shaky idle and ride as if something is clogged when I stomp on the gas. I think the gas station may have had a problem with their gas or maybe even added something into it, which is why they sold it for cheap??

Do you have any suggestions as to solving this problem? Suction out the gas from the tank and replace?

Thanks

JayX5 · #6 03-28-2007, 02:06 AM

Any recommendations as for a fuel cleaner?

noncom23 · #7 03-28-2007, 10:24 AM

Could try a touch of Techron.

Quote:

Originally Posted by JayX5

Any recommendations as for a fuel cleaner?

BimmerDude · #8 03-28-2007, 10:43 AM

Jay, I know where you put gas. I've heard bad things about that place. Do your self a favor. Drive the car until its half or less in the tank. Go to a Shell and put some V-power. At that time also pour some fuel cleaner in there. Techron is good stuff as well as the stuff BMW has at the dealer. Drive the car after you do that for a few hours and then when you get half way again, go to Shell and fill her up once again. This will take a few times but this is what I was told from my mechanic when I had the same problem as you last year. Good Luck. She will be working just fine...

JayX5 · #9 03-28-2007, 12:33 PM

Quote:

Originally Posted by BimmerDude

Jay, I know where you put gas. I've heard bad things about that place. Do your self a favor. Drive the car until its half or less in the tank. Go to a Shell and put some V-power. At that time also pour some fuel cleaner in there. Techron is good stuff as well as the stuff BMW has at the dealer. Drive the car after you do that for a few hours and then when you get half way again, go to Shell and fill her up once again. This will take a few times but this is what I was told from my mechanic when I had the same problem as you last year. Good Luck. She will be working just fine...

Thanks for the input bro. I'll do it and hope for the best. Just hope the car won't stop me while trying to get rid of half the gas in the tank.

Was this the gas station on Oakton and Asbury, cause that's where I went.

noncom23 · #10 03-28-2007, 12:37 PM

Should be OK. Cats can suffer sometimes in these situations.

Quote:

Originally Posted by JayX5

Thanks for the input bro. I'll do it and hope for the best. Just hope the car won't stop me while trying to get rid of half the gas in the tank.

Was this the gas station on Oakton and Asbury, cause that's where I went.

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