1989 Chevy Beretta possible ecm problem

1989 CHEVROLET BERETTA
12,000 MILES • 6 CYL • FWD • AUTOMATIC
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JHENRY
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  • 1 POST
i have a 1989 chevy beretta 2.8 gtu automatic and it will run and idle like a dream for about 30 mins then the idle will accelerate and sometimes stall, but it will not throw a check engine light and when hooked up to a computer all systems diagnose working properly. please help
Oct 18, 2009 at 1:37 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Have you checked fuel pump pressure? Also, have you checked for vacuum leaks? Finally, has the fuel filter been replaced in the recient past?

Let me know.
Joe
Dec 21, 2009 at 9:48 AM
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