Intermittent stalling when transmission is shifted into reverse

2002 MERCURY MOUNTAINEER
180,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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LAWRENCE CHENOWETH
  • MEMBER
  • 39 POSTS
It does not do it all the time that is why it has me mind clogged. It's been a good truck other than a few flaws. would the EGR valve cause it to stall?
Sep 25, 2019 at 7:44 PM
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BMDOUBLE
  • ✓Experienced Mechanic
  • 1,139 POSTS
Yes that is one possibility! Is your check engine light on? I have had plenty of these with stuck open EGR valves, just give the side of the valve a tap with a hammer and most of them clear up, but still remove the valve so you can clean it. But a great place to start is to retrieve the codes from the PCM, that way your not barking up the wrong tree!
Sep 26, 2019 at 4:46 AM
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