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Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Dodge
Satisfied Customers: 3939
Experience:  Owner at Carolina Auto Service &Sales , 20 years Experience in Foreign & Domestic vehicles
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ODD BANK MISFIRE, 2004 RAM 1500 5.7L, 93477, ON HILLS, & ON

Customer Question

ODD BANK MISFIRE
JA: How many miles are on the car? Is it a steady misfire? Or random?
Customer: 2004 RAM 1500 5.7L, 93477, ON HILLS, & ON FLAT CRUISING AFTER GETTING INTO IT HARD
JA: Are you fixing your Ram 1500 yourself? What have you tried so far?
Customer: REPAIR SHOP, MISFIRE #1,3,5,7, SAME CYLINDERS INJECTOR PULSE DROP, REPLACED POWER WIRE FROM SPLICE143 TO155
JA: Anything else you want the mechanic to know before I connect you?
Customer: THATS IT FOR NOW
Submitted: 1 month ago.
Category: Dodge
Expert:  Chad Farhat replied 1 month ago.

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

Expert:  Chad Farhat replied 1 month 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

Expert:  Chad Farhat replied 1 month 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 ?

Expert:  Chad Farhat replied 1 month ago.

You are very welcome :)

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Chad Farhat
ASE Certified Technician