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Old 10-27-2015, 08:20 AM   #1
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Default Multiple diagnostic codes

Got a P0305, PO205, and PO174 code on my '06 4.6l PU. Could a bad coil on plug be causing all three codes to display? Thought I'd replace the coil before spending money at the shop?
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Old 10-27-2015, 08:54 AM   #2
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Symptoms?
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Old 10-27-2015, 08:55 AM   #3
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Sounds more like an injector
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Old 10-27-2015, 09:00 AM   #4
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Slight power loss and I can feel the skip under normal driving
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Old 10-27-2015, 09:18 AM   #5
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Is there a way to test the injector? Even though I'm old , this is new to me.
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Old 10-27-2015, 09:21 AM   #6
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Being that the best way to check an injector is to bench test it, you may as well pull the injector and replace it. All the evidence points to the injector being faulty. While you're pulling the injector, just do a quick visual check on the harness to make sure it's not the issue.
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Old 10-27-2015, 09:38 AM   #7
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I'll give it my best shot! Thanks for the help!
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Old 10-28-2015, 02:10 PM   #8
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Default Multiple Codes update

I attacked the 4.6 150 this morning. Started by getting a new coil for the cylinder 5 misfire. When I removed the bracket for power steering canister to access the coil below I found two broken wires. It runs from the harness and plugs into the front bottom of the fuel rail. I haven't a clue what it does. I soldered both wires, taped and retaped. Installed the new coil. Runs fine in the garage, no diagnostic lights. Hope this solved the problem. I have not driven it yet (we're in the midst of monsoon like weather) but am optimistic with no diagnostic lights on the dash. Thanks for all the suggestions.
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Old 10-28-2015, 02:12 PM   #9
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Quote:
Originally Posted by jimbo01 View Post
It runs from the harness and plugs into the front bottom of the fuel rail.
Fuel injector or pressure sensor? Where are the pictures of this?
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Old 10-28-2015, 02:12 PM   #10
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Nice ...
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