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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
P0300 code only at high rpm's under load
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<blockquote data-quote="nxhappy" data-source="post: 15701912" data-attributes="member: 50238"><p>Faulty spark plug (s) ,Faulty ignition coil (s) ,Clogged or faulty fuel injector (s) ,Intake air leak ,Fuel injectors harness is open or shorted ,Fuel Injectors circuit poor electrical connection ,Ignition coils harness is open or shorted Ignition coils circuit poor electrical connection Insufficient cylinders compression Incorrect fuel pressure</p><p></p><p>first simple check air intake leaks or vac leaks</p><p>could be partially clogged injector, run some lucas injector cleaner through it </p><p>put a gauge on it, measure fuel pressure </p><p>do not run it WOT anymore, it's running lean. You WILL cause damage.</p></blockquote><p></p>
[QUOTE="nxhappy, post: 15701912, member: 50238"] Faulty spark plug (s) ,Faulty ignition coil (s) ,Clogged or faulty fuel injector (s) ,Intake air leak ,Fuel injectors harness is open or shorted ,Fuel Injectors circuit poor electrical connection ,Ignition coils harness is open or shorted Ignition coils circuit poor electrical connection Insufficient cylinders compression Incorrect fuel pressure first simple check air intake leaks or vac leaks could be partially clogged injector, run some lucas injector cleaner through it put a gauge on it, measure fuel pressure do not run it WOT anymore, it's running lean. You WILL cause damage. [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
P0300 code only at high rpm's under load
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