1989 Mercedes 300E will not stay running when warm

1989 MERCEDES BENZ 300E
122,000 MILES
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ROBERT PRINCE
  • MEMBER
  • 1 POST
have replaced fuel pump, relay, good fuel
Dec 6, 2011 at 10:11 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the idle speed air valve
Dec 6, 2011 at 11:24 AM
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