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Old 03-28-2015, 08:44 AM   #1
Ralliart10
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Exclamation Need help!!!

My 318ti is idling really bad and the CEL is on for P1140 and P0505 Can anyone give me any advice to fixing this please!
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Old 03-29-2015, 12:49 AM   #2
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My 318ti is idling really bad and the CEL is on for P1140 and P0505 Can anyone give me any advice to fixing this please!
Clean idle control valve and MAF sensor plus ensure there are no breaks/cracks in the bellows hose. If after you do all that and still get the errors most likely the CCV valve is bad.

Best, John S
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Old 03-29-2015, 08:20 AM   #3
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Okay Ill try that out! Hopefully it works bc the car runs like crap
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Old 03-29-2015, 08:55 AM   #4
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Have you had this problem before John?
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Old 03-29-2015, 04:02 PM   #5
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Didn't Derek just have a similar issue?
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Old 03-30-2015, 07:21 AM   #6
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Didn't Derek just have a similar issue?
Did he get it fixed??
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Old 03-30-2015, 04:20 PM   #7
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Have you had this problem before John?
Yes and I cleaned the ICV and MAF but it did not correct it. I found a big tear in the bellows hose and after I replaced it the car ran fine. After I turboed the car the CCV valve blew from the boost and cause a bad idle. After I fixed the CCV with some older PCV valves the idle was good again. I always try to repair stuff that is free before spending money on parts.

Does your idle "Hunt" up/down up/down rpm's?

John S
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Old 03-31-2015, 08:09 AM   #8
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Yes the engine sounds like it wants to turn off :confuse: and when I drive it the rpm bounces
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Old 03-31-2015, 04:22 PM   #9
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Yes the engine sounds like it wants to turn off :confuse: and when I drive it the rpm bounces

Hunting is the ICV trying to get a steady idle but can't because it over-shoots and is continously chasing its tail up/down. Clean the ICV with TB cleaner and a q-tip and spray out the maf with the TB cleaner. Also be 100% sure you don't have a crack in one of the seams in the Bellows hose or some big vacuum leak.

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Old 04-11-2015, 07:47 AM   #10
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Hunting is the ICV trying to get a steady idle but can't because it over-shoots and is continously chasing its tail up/down. Clean the ICV with TB cleaner and a q-tip and spray out the maf with the TB cleaner. Also be 100% sure you don't have a crack in one of the seams in the Bellows hose or some big vacuum leak.

John S
Okay I cleaned the ICV and MAF and I still have the problem I ordered the PCV (CCV) today hopefully that fixes the problem.

I noticed the car only idles high when I have it in Park or Neutral but when I put it in drive the idle drops this tends to happen when the car is fully warm.
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Old 04-12-2015, 05:55 PM   #11
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Okay I cleaned the ICV and MAF and I still have the problem I ordered the PCV (CCV) today hopefully that fixes the problem.

I noticed the car only idles high when I have it in Park or Neutral but when I put it in drive the idle drops this tends to happen when the car is fully warm.
Triple check that bellows hose everything you state points to a big vacuum leak
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Old 04-12-2015, 08:14 PM   #12
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Triple check that bellows hose everything you state points to a big vacuum leak
You're talking about the I intake boot correct?
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Old 04-15-2015, 10:34 PM   #13
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bump
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Old 04-15-2015, 11:47 PM   #14
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I think that John is talking about the rubber elbow(s).

I'd wonder if your MAF is done, a cleaning may not be enough. If you have an aftermarket intake I would lean more in this direction. It'd be nice if you could find another one to slap in dere and test.
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Old 04-16-2015, 12:17 AM   #15
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I had a bad throttle position sensor which had crazy stuff going on when driving, random rpm drop and surge.

Definitely make sure its not a vacuum leak. Intake boots, fuel injector air hoses, random vacuum lines, brake booster line, PCV hose, etc. Spray brake cleaner on each one individually, if the idle goes crazy you found the culprit.
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