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DOHC - 2.3L Duratec / Mazda L Engines Discussions and Topics specific to the Duratec 4 cylinder engines

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  #1  
Old 10-31-2009
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Lots of codes

I just bought a 2003 Ranger 4 cyl last week. It was running pretty good but now it idles awful. It is throwing a lot of codes.
2195
2004
0171
0300
0301
0304
0316

I am guessin vacuum leak since there are so many codes? Are there any common problems with this engine?
Thanks
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Old 10-31-2009
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air and fuel metering:
P0171 System too Lean (Bank 1)

ignition:
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0316 Misfire detected within first 1000 revolutions since start up

air metering:
P2004 Intake manifold control stuck open
P2195 Lack of HO2S-11 switch-sensor indicates lean
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  #3  
Old 11-04-2009
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Well I replaced all the plugs, wires, and fuel filter. Still have the problem. It is like it is searching for the idle. If I come to a stop after getting off the highway it takes a few seconds to rev down to idle and then I get the idle problem.
I'll start looking for a vacumm leak tomorrow.
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  #4  
Old 11-07-2009
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Found the problem. Intake leak on cylinder 1. Runs like a champ now. I had to plug one port though. Anybody know where this hose goes? Will post pic.
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Old 11-07-2009
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