99-04 Jeep Grand Cherokee [Archive]

HHOhoper

08-17-2008, 07:40 PM

Hello all!

I'm looking to see if anyone has put an HHO generator on one of these vehicles. I have a 2000 Jeep Grand Cherokee Limited 4.7L V8.

volomike

08-20-2008, 12:57 AM

I have a 2004 Jeep Grand Cherokee. I have no O2 or EFI sensor fixes on it. I went from 16mpg to 24mpg using a modified Powertube-style kit as seen on YouTube. There's a box over the fuel injector, and that's where I've drilled a hole and stuffed that HHO gas in. I'm wondering if I should be messing with my sensors or would that cause other problems?

HHOhoper

08-23-2008, 02:42 AM

Well to go from 16 to 24, I'd say you've pretty much nailed it! Congrats! Would you be willing to post the details of your generator?

Painless

08-23-2008, 01:25 PM

I have a 2004 Jeep Grand Cherokee. I have no O2 or EFI sensor fixes on it. I went from 16mpg to 24mpg using a modified Powertube-style kit as seen on YouTube. There's a box over the fuel injector, and that's where I've drilled a hole and stuffed that HHO gas in. I'm wondering if I should be messing with my sensors or would that cause other problems?

Which engine do you have in your 04?

SamB52

08-24-2008, 10:36 PM

I'm having no luck with my Jeep with the hemi.
Feeding 2.3 lpm into the throttle body...no change in mileage.
Anybody's advice is welcome...

Average 15 mpg city, 19 mpg highway - plenty of room for improvement.

Painless

08-24-2008, 10:39 PM

Did your mpg go down after HHO or stay the same?

SamB52

08-25-2008, 10:11 PM

Did your mpg go down after HHO or stay the same?

It actually went down a little. With MAP and EFIE I could get it back up to original mileage. If I tried to get further gains with MAP and EFIE my engine light would come on.

porkchop

08-27-2008, 06:20 PM

You have got to use a device to adjust the O2 sensor. mine wouldn't go until i got one.

volomike

08-27-2008, 10:25 PM

You have got to use a device to adjust the O2 sensor. mine wouldn't go until i got one.

And what model of Cherokee do you have, and what is your current gas mileage with your new setup?

HHOhoper

09-14-2008, 09:52 PM

I'm having no luck with my Jeep with the hemi.
Feeding 2.3 lpm into the throttle body...no change in mileage.
Anybody's advice is welcome...

Average 15 mpg city, 19 mpg highway - plenty of room for improvement.

2.3 LPM?? That is a lot of HHO! Have you tried starting with lower amounts and adjusting upwards?

HHOhoper

10-27-2008, 02:05 AM

Got the generator hooked up to my 2000 GC. No noticeable difference yet. :confused: I'm really wondering if I'm going to have to mod stuff. I really didn't want to.

jcianci12

04-08-2012, 10:12 PM

Hey guys im from down under, and own a 2002 grand cherokee. I will be adding a generator soon, and have purchaed a ob2 2 reader which will connect up via bluetooth to my laptop so I can see whats going on. I am looking for a place to collaborate any info that I have learned with others. I would like to make a unit that uses resonance and a coil but for now I think I will start off with a simple design. Can anyone let me know what sort of unit they are running on their 4.7 motor? I would love to get a starting point recommendation.

thanks, J