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Problems With a 97 4.6L Problems With a 97 4.6L
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  #1  
Old 10-15-2009, 12:18 PM
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Join Date: Oct 2009
Location: Escanaba,MI
Vehicle: 1997 Ford F-150
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Problems With a 97 4.6L
My truck seems to be missing and lack of power. Im coming up with codes P0301 (cyl misfire#1) and P0307 (cyl misfire#7) and P0171 (bank 1 lean) and P0174 (bank 2 lean). ANy ideas on where i should start? The plugs/wires and fuel filter where just replaced. Thanks in advance guys!!

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  #2  
Old 10-15-2009, 12:49 PM
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Quote:
Originally Posted by dieselboy_6.0 View Post
My truck seems to be missing and lack of power. Im coming up with codes P0301 (cyl misfire#1) and P0307 (cyl misfire#7) and P0171 (bank 1 lean) and P0174 (bank 2 lean). ANy ideas on where i should start? The plugs/wires and fuel filter where just replaced. Thanks in advance guys!!
how many miles and what kind of plugs?
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  #3  
Old 10-15-2009, 03:59 PM
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Location: Michigan
Vehicle: 1998 Ford F150 4x4 5.4L
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Yea , coils as well. A 97 w/miles, it may be time to go thru everything.
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  #4  
Old 10-16-2009, 01:40 PM
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Vehicle: 1997 Ford F-150
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Its got bosch platnums and the trucks got 271,000miles. I just replaced both coils and the only code im coming up with now is bank 2 lean. I wonder if one of my cats is plugged? Its running on all 8 but still dont have much power... thanks guys...
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  #5  
Old 10-16-2009, 02:17 PM
glc glc is offline
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Get those Bosch out of there and put Motorcrafts in. Check the PCV elbow in back of the intake manifold for cracks and mushiness.

A muffler shop can use an infrared sensor to tell if your cats are clogged.
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  #6  
Old 10-19-2009, 03:15 PM
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Join Date: Oct 2009
Location: Belgium
Vehicle: 1997 ford F150 4.6cc
Posts: 10
hey
Yes GLC , i had the same prob only i also had code p1409 ( snap on tester ) and today i checkt all the vac hoses and no crack in it . So i have disconected all the vac hoses and also the demounted the right innerwing . There is the canister with the vac hoses . then i disconected those and cleand eatch off it with air pessure . The hose from the canister to the EVR was as good as closed and i blow all the dirt out of it . by remounting everything the prob was fixt , no more lamda probs and no more evr code .

hope its a little help .

Is it not so GLC when the cat is blocked that the hoses DPFE and EMS has to blow of from the egr tube ?


Cya
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  #7  
Old 10-19-2009, 05:19 PM
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Get the bosch plugs outta there and get ya some motorcraft plugs ASAP that will help the misfires.

as for the lean check vac hoses and the intake manifold for leaks.
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  #8  
Old 10-19-2009, 06:17 PM
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Bosch plugs dont do well in modulars probably the worst plug for them and they are picky engines that way. Get Motorcraft Denso or NGK plugs.
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  #9  
Old 10-26-2009, 11:54 AM
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Location: Escanaba,MI
Vehicle: 1997 Ford F-150
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Truck runs good now! #7 injector was bad, #1 cyl the coil was bad, 2 of the cats were plugged and there was a vaccum hose cracked by the passenger side valve cover. Replaced injector, took all 4 cats off and welded bungs for o2s in new pipes, replaced vaccum line and replaced both coil packs. Thanks guys!
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  #10  
Old 10-26-2009, 05:18 PM
glc glc is offline
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You should really put 2 high flow cats back on.
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