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2017 LT Rough idle, stalling, foul smelling exhaust

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Old Sep 25, 2025 | 03:04 PM
  #1  
Fermaro's Avatar
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Default 2017 LT Rough idle, stalling, foul smelling exhaust

2.0L turbo.
This began overnight - no warning.
Starts every time. Runs rough for a few seconds then quits. Excessive grey smoke out the back with a sulpher smell.
Installed a new crankshaft sensor to start - nothing changed.
Here's the weird part, no trouble codes at all.
.
Any solid advice would be great, thanks in advance. Mike
 
Old Oct 4, 2025 | 04:25 PM
  #2  
craby's Avatar
April 2011 ROTM
Joined: Mar 2009
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From: Tokeland, Washington
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you may have a plugged cat.
 
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