Want to know how to replace a Honda alternator? In this video I show you how I diagnose and replace the alternator on a seventh generation 2004 2.4L Honda Accord (2003-2007 should be similar). The exact vehicle in the video is a 2004 Honda Accord EX Sedan 2.4L four cylinder. The parts shown are for this 2004 EX model, make sure to get the correct parts for your application. I recommend allowing time for the vehicle to cool down if it has been recently driven.
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Tools and Parts:
Denso Alternator: https://amzn.to/2zUOVZC
Multimeter (alternative to one shown): https://amzn.to/2Llmxq8
GearWrench XL Flex Wrenches: https://amzn.to/34nZuCw
Back Probes: https://amzn.to/2O155sL
Autel Scan Tool (Updated Version): https://amzn.to/2ZCP8z7
GearWrench Serpentine Tool: https://amzn.to/2NPYJw1
Milwaukee M12 Ratchet: https://amzn.to/2MWoGKR
Snap-On Torque Wrench: http://bit.ly/2TzsaU0
GearWrench Sockets: https://amzn.to/2LizMHQ
GearWrench Ratchets: https://amzn.to/2NU5L2P
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Due to factors beyond the control of the Big Dog50001 Automotive Channel, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. The Big Dog50001 Automotive Channel assumes no liability for property damage or injury incurred as a result of any of the information contained in this video.
The Big Dog50001 Automotive Channel recommends safe practices when working with power tools, in on or around automobiles or other vehicles, automotive lifts, lifting tools, jack stands, electrical equipment, automotive modules and systems, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.
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Tools and Parts
This channel earns a small commission using some of these links – at no additional cost to you.
Denso Alternator (alternate to one shown): https://amzn.to/2zUOVZC
Multimeter (alternative to one shown): https://amzn.to/2Llmxq8
GearWrench XL Flex Wrenches: https://amzn.to/34nZuCw
Back Probes: https://amzn.to/2O155sL
Autel Scan Tool (Updated Version): https://amzn.to/2ZCP8z7
GearWrench Serpentine Tool: https://amzn.to/2NPYJw1
Milwaukee M12 Ratchet: https://amzn.to/2MWoGKR
Snap-On Torque Wrench: http://bit.ly/2TzsaU0
GearWrench Sockets: https://amzn.to/2LizMHQ
GearWrench Ratchets: https://amzn.to/2NU5L2P
The Big Dog 50001 Automotive Channel Store can be found here: https://www.amazon.com/shop/bigdog50001automotive
Really glad it's an easy swap because Advanced sold me a bad rebuilt one. Tested everything, returned it and got my money back then ordered a brand new one online for 1/2 the price as rebuilt and no core charge. That 20 year old Honda alternator worked well for 20 years! LOL Thanks for the video
BigDog, you really seem to know your Honda's!!! I broke the alternator bolt on my 2002 Acura MDX. Half stuck in the engine block.
What do I do to get this thing out, in your humble opinion? Thanks!
Hi there, thanks for posting this video. Very clear with instructions. I had the exact same symptoms, have a EU spec CL9, there was not enough space between radiator and the engine front so had to take out left cooling fan and used the same 3/8 ratchet setup to unbolt. With only 78k miles, I got the rectifier bridge and brushes replaced from local electrician. Put it back and all good. Great video 4:50
Assim fica fácil….
Hello Sir. i have 05 odyssey. engine on battery is showing 15v or more even up to 17v
engine on with load battery is still above 15v
what wrong could it be . alternator ? new battery Please help
Exelente video gracias por tu tiempo y compartir saludos cuidate mucho
Awesome thorough explanation of diagnosing and replacing the alternator. I have an 07 and after watching this I had a good understanding of the process and was able to do mine with no problem. Excellent video, thanks.
Do you think a solenoid leak is causing my alternator to keep going bad
I have a question. I performed all of the diagnostic tests you showed. All checked out OK but one. When I connect the negative batter post to the Ignition on wire on the Alt with the key turned on in the car, I got zero volts. Does that mean that the Alternator is good but fuse # 18 is bad?? Thank you
This troubleshooting/instructional video is among the best in terms of clarity, easier to follow and completeness. And as you can tell still useful as ever after five years. The only thing that was confusing was how the voltage-drop test/readings were measured, was the meter on simple "voltage" detection or some other mode like ampere reading? thanks again for this valuable share.
Replaced my alternator with a Duralast 5 years ago on Civic. It lasted 5 yrs. Just replaced it again. It was covered under a lifetime warranty from Auto Zone. That was a free switch out.
Hi, Thank you for this wonderful video. Do I need to check any of the fuses if the battery warning light turns on?
We have same car but on my case..my battery warning indicator not lighting …. what's the possible problem….
I can't get the bottom bolt back in, how bad is that?
Thank you! Just picked up a remanufactured alternator from Autozone and after installing it this is exactly what happened to me. I'm praying that it's just a faulty unit and it's nothing else. Super annoying taking everything apart and having to redo it. UGH!
Very through and detailed. Thank you!