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Old 05-11-2013, 04:47 AM   #10
Dgnarvs
2001 Boxster S
 
Join Date: Apr 2013
Posts: 97
Quote:
Originally Posted by Skootnasty View Post
Sounds like it backfired during startup. What are your DME codes? If the throttle body did indeed take a voltage spike, or some sort of electrical gremlin bit it during the jump start/battery replacement, then it could cause a backfire through the intake. If it failed in a manner to affect the 5v reference circuits then it could cause a backfire through the intake. Incorrect cam timing can cause a backfire through the intake.

The list can continue to grow without DME codes. Start there and see where it goes. Beyond that its lot of speculation.

Skoot
This makes sense. Thanks, Skoot. CEL did not light up but there is a fault code 412.
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2001 Boxster S
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