Sudden drastic gas consumption

GMC
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ODDCHICK
  • MEMBER
  • 2 POSTS
Hello,

I have an older car, a 1991 Corsica. I typically put $20 every 3 days in the tank. However, in just the past month, it has been eating about $100 a week.
I has a full and complete tune up done about 2-3 months ago and there are no leaks. Any clues?
Feb 2, 2006 at 3:48 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Provide any recorded fuel quantities and distances traveled over comparable periods, and clarify whether fuel prices or driving patterns changed.

Guidance references and applicability

Source: Original question and visible replies. Owner reports and other participants' experiences are distinguished. Next steps are editorial requests for clarification or existing diagnostic findings, not a verified repair procedure or an independently confirmed component diagnosis.

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
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CHEVY350GUY
  • ✓Experienced Mechanic
  • 109 POSTS
check o2 sensor. does it have a 2.8l?
Feb 2, 2006 at 4:03 AM
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ODDCHICK
  • MEMBER
  • 2 POSTS
It is a 2.2, thanks
Feb 2, 2006 at 4:56 AM
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Discussion summary

Sudden drastic gas consumption

The owner of a 1991 Chevrolet Corsica reported increased fuel spending over the preceding month, from about $20 every three days to about $100 per week. The owner reported a tune-up two to three months earlier, no leaks, and a 2.2L engine.

Reported outcome: No measured fuel-consumption rate, confirmed diagnosis or successful repair was reported.

Spending alone does not establish fuel economy or the size of any consumption change. A reply suggested an oxygen-sensor issue, but no diagnostic findings confirmed it.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
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