At 1200-1300rpm @30-35mph the car surges or jerks.

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Runs well great power etc. At very slow speed in Drive rpm fluctuates up and down approx 150rpm 6-750 rpm. Check engine light comes on when slow running. Poor fuel economy. At 1200-1300@30-35 mph the cqar surges and jerks. Codes 42 - HO2S sensor voltage high/system rich. O2 sensor changed. rebuilt engine approx 20,000 miles

Capt. Roger in Columbus MT

Dec 16, 2014

What are the best Ford repair shops?

RepairPal Certified shops can diagnose and repair your 1990 Ford Bronco. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

At 1200-1300rpm @30-35mph the car surges or jerks.

What is your question?

Capt. Roger in Columbus MT

Dec 16, 2014

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What are the best Ford repair shops?

RepairPal Certified shops can diagnose and repair your 1990 Ford Bronco. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.