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Ford Taurus | Mercury Sable | Ford Taurus SHO | 1986-2007 Forum for discussion of the Ford Taurus, Mercury Sable and Ford Taurus SHO. Covers vehicle years: 1986-2007

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Old 01-29-2010, 10:10   #1 (permalink)
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confused 05 Sable

I recently replaced the plugs and the plug wires on a friends 05 Sable 3.0 V6 @ 68k miles.
Immediately at restart, the engine had a persistant miss. After checking I found out the plugs he supplied were for the Flex fuel engine and I replaced them with the correct plugs. The engine smoothed out and after a good road test the check engine light came on. Ran the codes and came up with PO300, Random Multiple Missfire. Figured this was due to the wrong heat range on the first plugs so I cleared the code, drove it back to him and signed off on it.
Two days later he calls and says the check engine light is on again. Run the codes again and this time I got PO171 (system too lean bank 1), PO17 (system too lean bank 2), PO300 (Random multiple missfire), P2196 (O2 sensor stuck rich bank 1 sensor 1 and bank 2 sensor 2). Not sure where to go with this. Was reading in another thread about the intake gaskets leaking and causing the first two codes. Any help direction or ideas would be appreciated.
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Old 01-29-2010, 23:49   #2 (permalink)
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Exclamation Re: 05 Sable

Quote:
Originally Posted by volusherG View Post
I recently replaced the plugs and the plug wires on a friends 05 Sable 3.0 V6 @ 68k miles.
Immediately at restart, the engine had a persistant miss. After checking I found out the plugs he supplied were for the Flex fuel engine and I replaced them with the correct plugs. The engine smoothed out and after a good road test the check engine light came on. Ran the codes and came up with PO300, Random Multiple Missfire. Figured this was due to the wrong heat range on the first plugs so I cleared the code, drove it back to him and signed off on it.
Two days later he calls and says the check engine light is on again. Run the codes again and this time I got PO171 (system too lean bank 1), PO17 (system too lean bank 2), PO300 (Random multiple missfire), P2196 (O2 sensor stuck rich bank 1 sensor 1 and bank 2 sensor 2). Not sure where to go with this. Was reading in another thread about the intake gaskets leaking and causing the first two codes. Any help direction or ideas would be appreciated.
Definetely check all PCV and vacuum line connections. Any splits or dry rot is a problem.
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