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Audi A4 The Audi A4 model offers nimble handling and performance that makes it one of the leading cars in its class. Read more about the Audi A4 in the Audi A4 review.

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  #1  
Old 11-24-2005, 06:59 PM
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Default P1136 code, replaced mafs, still code??

I have been on working on clearing the code on my 99 A4 1.8T, 79,000 miles. I replaced the MAFS, checked the vacuum lines, replaced the vacuum line in the front of the car, the braided one, all the lines good to me. After replacing mafs I reset the code , drove it some, and now the OBD II reader says P1136 pending. What else can I change to clear this for good, an oxygen sensor, if so which one, and is there an online place to get them? Thanks
  #2  
Old 11-24-2005, 09:01 PM
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Default RE: P1136 code, replaced mafs, still code??

Where should I be looking for vacuum leaks? All the vacuum hoses look in very good condition to me. I read to listen for a leak when the engine is running, but how do u hear a leak over the sound of the engine?
  #3  
Old 11-24-2005, 09:41 PM
 
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Default RE: P1136 code, replaced mafs, still code??

P1136 = Long term fuel trim, idling, bank 1 - system too lean, things to look for are fuel pressure/pump, injector(s) seal leak, intake/exhaust leak, AIR system, hose leak
  #4  
Old 11-24-2005, 10:14 PM
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Default RE: P1136 code, replaced mafs, still code??

Can the oil dip stick not being all the way in be a vacuum leak, or exaust leak, or in any way cause the p1136
  #5  
Old 11-24-2005, 10:19 PM
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Default RE: P1136 code, replaced mafs, still code??

P1136 Fuel trim too rich at idle. This should not be a vacuum leak. When did you last change you air filter? Could be O2 sensor.
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  #6  
Old 11-24-2005, 10:25 PM
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Default RE: P1136 code, replaced mafs, still code??

Try

www.ecstuning.com

www.rockauto.com

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  #7  
Old 11-24-2005, 10:30 PM
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Default RE: P1136 code, replaced mafs, still code??

crazyhawk P1136 code is too lean , P1137 is too rich. I have code P1136
  #8  
Old 11-24-2005, 10:37 PM
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Default RE: P1136 code, replaced mafs, still code??

My Chilton Repair Manual disagrees. Go to GOOGLE and search


"OBD II P1136"

It says O2 sensor problem.

You only have one bank.
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  #9  
Old 11-25-2005, 01:11 PM
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Default RE: P1136 code, replaced mafs, still code??

I fixed the dip stick , reset code drove it 20 miles, no codes , put it in park and idled for less then a minute and code p1136 pending came on again. Before the code pending light came all flashing test on the obd2 were done whie i was driving the car, all except the EV, but the EV had cleared before for me with no P1136 . This is the first time the O and the C code went threw their test after I reset ecm.
Would a VagCom tell me anything more?
  #10  
Old 11-25-2005, 01:16 PM
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Default RE: P1136 code, replaced mafs, still code??

It seems that when driving at decent speeds , which is what I did for the 20 miles all tested ok, but as soon as it was at idle for less thena minute is when the p1136 pending code came on. So is there something to look for that would cause it to come on at idle and not higher speeds?
  #11  
Old 11-25-2005, 01:47 PM
 
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Default RE: P1136 code, replaced mafs, still code??

I'm going for intake/exhaust leak this will effect O2 readings but doesn't mean O2 sensor is shot it just means poor reading from sensor due to leak

[IMG]local://upfiles/12092/0C9B95C80B0340DA896CAB5843973BDC.jpg[/IMG]
  #12  
Old 11-25-2005, 02:29 PM
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Default RE: P1136 code, replaced mafs, still code??

I found the leak. I huge hole the size of a pencil under an elbow towards the back of the engine area. A short black rubber elbow off the back of the intake manifold.
  #13  
Old 11-25-2005, 03:01 PM
 
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Default RE: P1136 code, replaced mafs, still code??

  #14  
Old 11-25-2005, 03:28 PM
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Default RE: P1136 code, replaced mafs, still code??

Ok I taped the hole till I get a new hose. Reset and drove 20 miles, all obd2 tests ran, and no check engine light.
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Old 11-25-2005, 03:50 PM
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Default RE: P1136 code, replaced mafs, still code??

audiforums helps once again!

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  #16  
Old 11-25-2005, 03:58 PM
 
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Default RE: P1136 code, replaced mafs, still code??

when it says "hose leak" this is the sort of thing it means
  #17  
Old 11-27-2005, 07:26 AM
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Default RE: P1136 code, replaced mafs, still code??

h00ray for AUDIFORUMS


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Old 06-14-2006, 03:49 AM
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Default RE: P1136 code, replaced mafs, still code??

[sm=icon_cheers.gif] to a good moment on AF!
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Old 06-14-2006, 03:49 AM
 
 
 
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1999, a4, air, audi, code, engine, fuel, idle, ii, lean, obd, p1136, p1137, quattro, trim


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