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audi a4 problem

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  #1  
Old 12-28-2009, 06:39 PM
wagner1968's Avatar
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Default audi a4 problem

Heyy i went and test drove a 99.5 audi a4 with a garret gt28rs turbo kit. When i was driving it as soon as you would start building boost the car would start missing but it still pulled 22 pounds. it had a cell so i plugged my scanner in and this is what i got

p1613

p0300
random/multiple cylinder misfire

p0303
cylinder # 3 misfire

p0304
cylinder #4 misfire

p1300
ignition system or misfire


i'm new to audi but i'm thinking bad coils or a ignition control module? please help
 
  #2  
Old 12-28-2009, 06:47 PM
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it could be the coils, could also be the spark plugs
I run an equivalant set up. I run a T28 with full boost at 24psi and run NGK BKR7E spark plugs gapped at 0.28".
 
  #3  
Old 12-28-2009, 06:54 PM
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i just don't want to buy it if its a bigger problem than that whats worse case scenario and shouldn't the cell have been flashing
 
  #4  
Old 12-28-2009, 08:04 PM
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it runs smooth untill about 3 grand when your building boost injector?
 
  #5  
Old 12-28-2009, 10:09 PM
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Check the gap on the spark plugs. It should be .028, not the standard .032. Also, they'll need changing often so they could be fouled. Find out who did the tuning. Maybe the fuel filter needs changing as it's more and more restrictive with more boost.
 
  #6  
Old 12-28-2009, 10:39 PM
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if its nothing more serious thats good
 
  #7  
Old 12-30-2009, 02:08 AM
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the p1613 code is known to come up if an automatic trans ecu is in a manual
car atleast this is what i have found out. So could this spitting and sputteriing be from a fuel cut while shifting and thats why its throwing thees codes but this kid has been driving the car for a year with none of theese problems till now?
 
  #8  
Old 12-30-2009, 09:29 PM
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why would teh fuel be cut while shifting?? never heard of that ever happening.
how long have you known this kid? if you never met the guy, and hes telling you that it drove fine until now. hes probably bullshitting you.
 
  #9  
Old 12-31-2009, 11:09 AM
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well what problems could this cause then
 
  #10  
Old 12-31-2009, 11:18 AM
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just throwing out ideas, but is it possible any of those codes are old? Maybe clear them, take it for a spin and see what happens? You could also try a TB alignment and see if that helps with the missing. Personally I'd put my money on the ignition control module, i thought the cel ALWAYS flashed for misfires?
 


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