PO175 System too rich (Bank 2)??? - F150online Forums



PO175 System too rich (Bank 2)???

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  #1  
Old 04-22-2006, 11:47 PM
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PO175 System too rich (Bank 2)???

On my 98, 5.4...I had 2 bad cop's. I replaced all the cop's and installed Autolight P plugs at the same time. Now the truck runs rough, has no excelleration...its a real dog now. Plugged into it with my scan tool when returned from the test drive and I get PO175 System too rich (Bank 2). The only thing I did different was to fill up with 91 octane gas instead of the 89 ethenol I always ran. Now Im lost again. Any ideas or anything of help? I really miss much truck...
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Old 04-23-2006, 12:10 AM
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if u have never changed o2s now would be the time
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Old 04-23-2006, 12:14 AM
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Quote:
Originally Posted by racerf150-2
if u have never changed o2s now would be the time
Would these be located in the exhaust sytem before or after the cats, or in the headers? I havent had the chance to look, its dark out now.Thanks...
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Old 04-23-2006, 04:15 PM
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they are the ones before the cat i believe ... located in the exhaust. they arent too much fun to change but definately i would do them your self and save the money. its a simple process just hard to get to. i just but the truck on jack stands and used a 22mm stuby wrench.. the connectors are behind the eninge block.. cant see them really so just go by feel. its a good idea to use pb blaster or some kind of penetrating lube on them to loosen them up.. may want ur exhaust hot also.
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Old 04-25-2006, 08:05 PM
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Would a bad EGR cause a rich fuel problem? Mine makes noises.
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Old 04-25-2006, 08:27 PM
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You need to start looking for stuck injectors or another misfire.
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