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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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Old 08-02-2011
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help with ranger

i have a 2006 2.3 ranger 2wd

suddenly yesterday,it started hesistating and missing on takeoff from a stop,as i step the gas in it continues to feel like its missfiring then catches itself and pulls.if i rev it in neutral, the hesistation/misfire disappears as the rpms rise, if i push the gas pedal sharply it hesitates as well.has a lopey/rough idle,no CEL on,replaced fuel filter yesterday,ohmed the coiled its good,plugs are good,im leaning towards a sensor or clogged injector.please any input would be great as its my daily drive.
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Old 08-02-2011
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No codes at all? that should def throw a code lol. Not even Ford specific codes? hmm do you have good fuel pressure at higher rpms?
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Old 08-02-2011
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How about the plug wires?
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Old 08-02-2011
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new wires and plugs,what psi should i be seeing while the truck is on?i hope its not a clogged injector....
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Old 08-02-2011
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I'm pretty sure you should read 35-50 psi at the fuel pump...I can't see it being a plugged injector...the coils could be bad even though you checked them and they read good...my truck had the same issues and I thought it was a bad fuel injector also...but it turned out to be a bad coil...the coils are cheaper than the injectors and easier to replace....since the plugs and wires are new, I would change out the coils and then run some fuel injector cleaner through the engine...
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Old 08-03-2011
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i forgot to mention i changed the coil with a new one,no difference so i returned it to the auto store,ran stp fuel system cleaner,still no change with fresh gas.
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Old 08-03-2011
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Just guessing, dont get me wrong.... but I heard from a friend something similar to this and was caused by gasoline mixed with water, he went to a gas station were some ashol%&$ were trying to bust customers with this cheap trick....
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Old 08-04-2011
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thanks,for the gas info,mines all gas lol,fuel pressure check is 10-12 at koeo,at idle 62 psi,whats wrong with this truck,anyone know how the maf should read on a multimeter?
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Old 08-09-2011
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bump,thanks.
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Old 08-09-2011
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How many coils? My 97 has two...
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Old 08-09-2011
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Also, clean your IAC and throttlebody...
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Old 08-09-2011
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1 coil pack,cleaned the iac valve and throttlebody too,im lost here.
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