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Rough Idling Issue

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Old Oct 12, 2024 | 05:14 PM
  #1  
981Lex's Avatar
981Lex
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Unhappy Rough Idling Issue

Hi all,

I wanted to ask some advice.
I started noticing some rough idling from my car a week ago.
On my way home from a drive I get a:
  • Check engine light (possible to drive on),
  • PSM loss
  • between 0 and 2500 rpm I get really rough idling and shaking + hesitation in pdk from 1st to 2nd
Car stats:
  • PDK
  • 2013 model year
  • 70k miles
  • Boxster S
  • 3.4 L
Codes from Cobb Accessport:

DME
P0301 - Misfire Cylider selective
P0302
P0303
P0300
UC418
P1382

PDK
P199A

Based on my research here I though all new plugs and coils would fix the issue.
Went ahead and got them replaced but the issue still persists.
What do you guys think should be tried next?
The tech also noted that I have a PDK leak so I will get that done as well this week but I don't think that will fix my rough idling and hesitation issue.
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Old Oct 13, 2024 | 11:53 PM
  #2  
981Lex's Avatar
981Lex
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Joined: May 2021
Posts: 65
Likes: 18
Default

Also if it’s an injector issue. Do you guys replace all of them or just one. I’m looking into injector prices and goddam they are expensive. My thinking is if one of them failed all others are about to fail as well so might as well and replace all?

Originally Posted by 981Lex

Hi all,

I wanted to ask some advice.
I started noticing some rough idling from my car a week ago.
On my way home from a drive I get a:
  • Check engine light (possible to drive on),
  • PSM loss
  • between 0 and 2500 rpm I get really rough idling and shaking + hesitation in pdk from 1st to 2nd
Car stats:
  • PDK
  • 2013 model year
  • 70k miles
  • Boxster S
  • 3.4 L
Codes from Cobb Accessport:

DME
P0301 - Misfire Cylider selective
P0302
P0303
P0300
UC418
P1382

PDK
P199A

Based on my research here I thought all new plugs and coils would fix the issue.
Went ahead and got them replaced but the issue still persists.
What do you guys think should be tried next?
The tech also noted that I have a PDK leak so I will get that done as well this week but I don't think that will fix my rough idling and hesitation issue.
Reply
Old Oct 14, 2024 | 05:52 PM
  #3  
Titanium5150's Avatar
Titanium5150
Instructor
5 Year Member
 
Joined: Jul 2020
Posts: 238
Likes: 111
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That's a lot of codes. I would have thought the same thing...a bad coil.

The ol' #1 981 troubleshooting question is always how's the battery?
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Old Oct 14, 2024 | 06:05 PM
  #4  
981Lex's Avatar
981Lex
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Joined: May 2021
Posts: 65
Likes: 18
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I just replaced mine since it was bad a couple months ago!

Originally Posted by Titanium5150
That's a lot of codes. I would have thought the same thing...a bad coil.

The ol' #1 981 troubleshooting question is always how's the battery?
Reply
Old Oct 15, 2024 | 03:28 PM
  #5  
tomekz's Avatar
tomekz
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Joined: Jan 2021
Posts: 688
Likes: 426
Default

Is the P1382 code for camshaft position sensor? maybe that's an issue too
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