1987 GMC Suburban Sulfur Smell

1987 GMC SUBURBAN
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RSTESENY
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  • 1 POST
Smells problem
1987 GMC Suburban V8 All Wheel Drive Automatic

What is making the sulfur smell?
May 4, 2009 at 3:24 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Rich fuel condition

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
May 4, 2009 at 3:51 PM
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