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06 f150, 5.4 automatic 4wd. accelerating at highway speed, as

Customer Question
Hi Pearl, 06...

Hi Pearl, 06 f150, 5.4 automatic 4wd. accelerating at highway speed , as if to pass, it falls on its face and backfires. ( at least I think what I'm hearing is repetitive little backfires) changed all 4 o2 sensors and all new fuel injectors. trouble codes say trouble with catalytic system. also smells rich at idle. cleaned MAF sensor.................. what next?

Mechanic's Assistant: My old Jeep sounds like a steam radiator sometimes. It must be old age. The Ford Mechanic will know what your noise means and what to do about it. Are you hoping to fix this yourself?

Yes. experienced "old school" mechanic....... new computerized everything baffles me.....

Mechanic's Assistant: Great! What have you tried so far?

See original message...........

Mechanic's Assistant: Is there anything else important you think the Ford Mechanic should know about your Ford?

125K miles, not driven hard at all, recently changed from mostly highway driving to mostly in town .

Submitted: 2 years ago.Category: Ford
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Answered in 3 minutes by:
2/16/2016
Ford Mechanic: Ron, ASE Certified Technician replied 2 years ago
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 24,320
Experience: 23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
Verified

Hello and thank you for your question,

Can you tell me the actual fault codes your getting when the check engine light is coming on?

Have you checked the fuel pressure as well?

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Ron
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 24,320
24,320 Satisfied Customers
Experience: 23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

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