suburban problems

Asked by Dec 25, 2015 at 04:42 PM

Question type: Maintenance & Repair

Lose power going uphill with foul odor service engine soon light starts blinking. 99
Chevy suburban 5.7 2 wheel drive 1500

2 Answers

150,795

A 'foul odor' in my experience could be either the catalytic converter or an overcharging battery. They are similar odors, best as I can describe as something like propane, sulfur like a paper match or 'rotten eggs'

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63,185

I'll go with the foul odor being the catalytic converter overheating. A flashing check engine light is warning you that the engine is misfiring and damaging the catalytic converter. If your Suburban has over 100,000 miles on it you're overdue for a tune up. Sounds like the ignition system is breaking down under load. HTH. -Jim

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