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ODD BANK MISFIRE, 2004 RAM 1500 5.7L, 93477, ON HILLS, & ON…

Customer Question
ODD BANK MISFIRE Mechanic's...

ODD BANK MISFIRE

Mechanic's Assistant: How many miles are on the car? Is it a steady misfire? Or random?

2004 RAM 1500 5.7L, 93477, ON HILLS, & ON FLAT CRUISING AFTER GETTING INTO IT HARD

Mechanic's Assistant: Are you fixing your Ram 1500 yourself? What have you tried so far?

REPAIR SHOP, MISFIRE #1,3,5,7, SAME CYLINDERS INJECTOR PULSE DROP, REPLACED POWER WIRE FROM SPLICE143 TO155

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

THATS IT FOR NOW

Submitted: 9 months ago.Category: Dodge
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Answered in 2 minutes by:
9/13/2017
Dodge 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: Dodge
Satisfied Customers: 5,508
Experience: Owner at Carolina Auto Service &Sales , 20 years Experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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

Hey how are you

1- did the injector pulse come back or no or intermittent

what is the fault # P0300 .

2- do you have a scanner that can read live data ,what are the fuel trims,long term & short term at idle at operating temp ?fuel status : open loop or closed loop ,at idle at operating temp

3- check for intake vacuum leak on that bank that is misfiring ?

4- click on link to view wiring diagram , the injectors are pulsed by PCM, now u said you replaced splice 143 to 155 , the 155 goes to injector ,that is power wire ,now the other wire on that injector #8 , do you have injector pulse from pcm, Connector #C1 , Pin #4 on pcm plug

most of time it is a pcm ,driver issue,other words need pcm,if wiring checks out ,we need power on one wire and pulsed ground from pcm , what are u missing

Vacuum leak check ,best to ask them to do a smoke test ?

Please let me know & we go from there ,let me know If you can not see the diagrams

Thank You

Chad Farhat

ASE Certified Technician

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

I believe brown withe wire on all injectors ,what do you have there ,switch on ?

then the other wires should be brown / different color for each injector ,what we have there ?

when switch is at on position and start position

will need to people to test one turn switch and one checking ?

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

You are very welcome :)

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