How to Replace Fuel Injectors on a 99-08 Dodge Jeep 4.7 & 3.7

How to Replace Fuel Injectors on a 99-08 Dodge Jeep 4.7 & 3.7

This is a fuel injector upgrade by installing Denso 12582704 injectors. How to get more HP and better MPG. The Denso injectors are a 12 hole design. At the end of the video, I also explain how to reset the ECM or PCM to put it into a fast learning mode.

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Comments

Allen Zatko says:

Do the denso injectors cause an error code P0175? (Rich fuel detected)
I have a 2004 Dodge Ram 4.7 and after swapping the injectors out the engine light came on. Showing the P0175 code. Just wondering if you had this same issue…

the nitro man says:

Did that help gas mileage at all? I have a 05 dakota with a 4.7, four wheel drive quad cab and it only has 46,000 miles on it. It is getting around 13mpg. It was my grandfather's truck and was left to me when he passes away. It's a hog on gas.

Atikah Rossett says:

I was wondering if the fuel injector clips necessary for this upgrade?

jamesdewer says:

can the OBED2 read O2 sensor voltges?

iowafarmboy says:

I'm glad I watched this first before just "digging in" on my 08 Grand Cherokee (220K miles). Only got 1 injector, but might as well do them all seeing what it takes. But these directions are absolutely very clear. Thank you!

Atikah Rossett says:

Do you have to install 2 optima batteries to start the Jeep wj?

Ray says:

So what’s the update? How did the new Ecotec injectors are going so far?

jamesdewer says:

You're the best

WJ's Life on a Boat says:

Considering doing fuel injector replacement on my HO. I can't figure out why I have a rough idle with the Doug Thorly Headers. I've done plugs, new coils, cleaned the throttle body, cleaned the IAC. No luck, no codes either.

Emmanuel Ricou says:

Salut mec merci pour ta vidéo. J'habite en France et pour avoir des injecteurs par Amazon c'est compliqué que pensse tu de cela pour mon wj 4.7 ? Real or cheap ?
https://www.ebay.com/itm/190824138711
Merci d'avance pour ta réponse

Hi man thanks for your video. I live in France and to have injectors by Amazon it's complicated what do you think of that for my wj 4.7? Real or cheap?
https://www.ebay.com/itm/190824138711
Thank you in advance for your answer

Charles Roberts says:

On a 2008 3.7 mopar motor do you have to put rtv sealer on the exhaust Manifold bolts

gittyupalice96 says:

I'm down on power, and computer is throwing a dead O2 sensor code. So hopefully just replacing the O2 sensor with a Denso (2344744) will solve the problem… If I still feel a lack of power thanks to this video I have a pretty good idea now on what to do with the injectors. (Thank you btw)

John Alemond says:

Thanks video was really helpful

Lusso Motorsports Group says:

Hi Martin, Love the videos. I tried this upgrade on my personal WJ. Ive noticed idle characteristics arent as good as before, any ideas?

Reed Boles says:

Hoping you’ll respond to this… I just did the denso injector upgrade on my 03 ram 4.7 and I have a rich condition. I think it’s only at idle as it stumbles a bit every now and then. I have a cold air intake and a good flowing exhaust. What can help ease the rich condition??

joshua schmieding says:

Your video says they are 12.5 ohm injectors but all of mine are metering at 13.5

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