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I have an 09 Honda accord that shows a misfire in number 2…

Customer Question
I have an 09 Honda...
I have an 09 Honda accord that shows a misfire in number 2 and three . I swapped coils around and still get a misfire in 2 and 3 the cars starts fine but falls on its face under a load and wont rev above 1500 rpms the only codes I get are 300, 302 and 303 and the injectors seem to be working
Submitted: 9 months ago.Category: Ford
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Answered in 5 minutes by:
9/21/2017
Ford Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 9 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Ford
Satisfied Customers: 5,500
Experience: Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic Vehicles
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Ford Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 9 months ago

hey how are you

did you plugs and loot at them ?

do we know if the other coils u swapping are good ?

what is mileage on it now ?

how are you sure the injectors are working good ?

lets start here

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

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Customer reply replied 9 months ago
the coils are all good because i checked them for power and spark the injectors i checked for power and listened to hear them clicking i put in new plugs to see if that helped and the mileage is 184023
Customer reply replied 9 months ago
the engine light is flashing if i clear the codes and start the car and put it in reverse or drive and give it gas while holding the brake it revs just fine for a min or so then you can feel it break down and the rpms drop to 1500 and it wont rev any higher
Ford Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 9 months ago

we need to check them for Resistance are they breaking down when they get warm ,check Resistance with voltmeter .power and spark is good, put how good spark and is it holding ?

the injectors , the only way to know is to do flow test ,

now we know we have power to them but is ecm pulsing those coils and injectors at all times ,.

your coil test is not correct for how good a spark they are given ?

are they the OEM Honda ones since 184k miles ?

you can have a vacuum leak under the intake that will cause p0300 random multiple misfire ,did you perform a smoke test to check for vacuum leaks

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