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Vehicle is "stumbling" and stalling out while.

Tiny
WHPOWER
  • MEMBER
  • 1999 OLDSMOBILE 88
  • 120,000 MILES
Vehicle is "stumbling" and stalling out while simply driving along. Has to "sit" a few moments before able to re-start engine. No "check engine light". But when scan tool is used it indicates a code was set showing an Exhaust Gas Recirculation valve closed position performance problem (trouble code P1404). My question: Is this indicated problem or any other problem with the EGR valve capable of causing the sort of stalling I've described? For information purposes: A few months ago a similar (and worse) problem was eventually traced to a bad mass airflow sensor (surprised me to no end). A new MAF sensor cured problem. Current vehicle behavior mimics the symptions experienced then, but scan tool does not now indicate a MAF problem. Please help me avoid tearing out what little hair I have left! Can EGR valve cause this?
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Saturday, December 1st, 2012 AT 11:13 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Start with checking fuel pressure

Roy
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Saturday, December 1st, 2012 AT 11:15 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
U will need to take it to the parts store and have the codes checked and cleared. Then drive 1 day then ck. The codes again. Then come back we will be here.
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Saturday, December 1st, 2012 AT 11:57 PM
Tiny
WHPOWER
  • MEMBER
  • 1 POST
It was the EGR value. I replaced it, took it back to have the codes checked and NO codes! Car has been doing fine for several days now.
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Monday, December 10th, 2012 AT 2:40 PM

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