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View Full Version : 1999 Jeep Wrangler 4.0L



Aucado
08-17-2008, 07:02 PM
I've not found much info specific to TJ's so I'm going to post what I've done. Though people should note that I'm new to HHO and mostly stumbling around.

My TJ is a '99, with a 6 cylinder, 4.0L engine. 135,000 miles. It has a Borla high-flow header (which replaced the crappy stock exhaust manifold when it cracked), but the rest of the exhaust system is stock. There are no other engine mods or alterations.

I installed a 2-cell HHO system, using the Water4Gas design. I spliced the positive lead into the the cigarette lighter's light-blue lead behind the dash board. I could not find any suitable wires inside the engine compartment (and boy did I look!) After installation, the cells were drawing 12+ volts (more like 13, but I have an analog meter), across the pair, and producing very actively.

I plugged the hose into an unused vacuum port on the side of the intake manifold, directly below the throttle body. This is very convenient!

The cells are 1 qt each, and currently using 4 tsp. of baking soda. This might be a bit much. I'll monitor the temperature of the cells and adjust accordingly.

All this I did today. No EFIE installed yet. I've ordered one, but will run the car without it for at least one full tank of gas to get get an MPG reading.

porkchop
08-20-2008, 08:24 AM
I would try using Sodium Hydroxide. It is lye. I have heard baking soda is not ideal. I found it a Lowes. The brand name was Roebic, and is in the drain cleaners section, and is cheap. It contains 100% Sodium Hydroxide. It is the amps you really want to measure. I have a 97 Jeep G.Cherokee, 6cyl.
I found that O2 extenders don't work, and I have been having problems when hooked to the manifold of the engine drawing in water when hooked there. You may be fine though, just keep an eye out. I installed a EFIE, that's when my mileage picked up. On my Jeep, the O2 sensor compensated for the increased oxygen due to the cleaner burn of hydrogen. I have not messed with the IAT, or MAP sensors. Just the O2. There are 2 on mine, before and after the CAT(catalytic converter). The only one you have to deal with, on my model is the one before the CAT. The one after is for monitoring the CAT, it doesn't do anything for the fuel ratio.
My EFIE is from fuel savers, it is the single deluxe model. It is nicely packaged with test ports, on/off switch, adjusting pot, and a light to let you know it is on.
I hope I have helped, all this information is just what I have found is working for me. I am not a rocket scientist, but then again not dummy.

Aucado
08-21-2008, 11:13 AM
Porkchop, Thanks for the info. I'll definately keep it in mind. My jeep is sort of a project to prove to my father (a lawyer) that just because big auto isn't putting these things on cars doesn't mean they don't work. So I have to carefully go through each step and document what works and how much. I'll be putting the EFIE on next, seeing what it does, and if it inceases MPG, then I'll have to run the EFIE without the HHO to prove that the EFIE alone does not cause the increase,etc.

What's the safety of Sodium Hydroxide?

porkchop
08-21-2008, 05:18 PM
It is supposed to work better. I have not did any experiments myself.
I read on this forum somewhere that you shoudn't use baking soda ( i forgot why)
I have read that a few other places too.
It works well for me.
Big auto has other things they know about that they are not putting in cars, like fuel vaporization (hot)
There are things out there that would increase gas mileage, but oil companies stop it from surfacing through their channels of influence.

Aucado
08-26-2008, 04:09 PM
Sunday I installed the Fuel-Saver EFIE Deluxe. I started with an initial adjustment of .200V. After about 100 miles of driving I had no noticeable change in my millage (17.84 MPG). After filling the tank I adjusted the EFIE to .400V and will check mileage again after more driving.

porkchop
08-27-2008, 05:18 PM
I have mine at .04. It didn't seem to help mine until it was set that low. i don't know why, but it does better there.

Aucado
08-28-2008, 08:39 AM
40 milliVolts? Huh. Well, if 400mV doesn't work, then I'll try 40mV

Aucado
08-28-2008, 10:10 AM
I just stopped by a gas station to top off my tank after 56.6 miles. It took 2.333 gallons, which works out to 24.26 MPG. That's a 6.42 MPG increase over my last test!

Since that accounts for less than a 1/4 tank, I'm going to now run a full tank, until the light comes on and check my mileage again.

fuelcommander
08-28-2008, 02:48 PM
i only run baking soda, its the safest and produces the most. Lye is dangerous. I have no problems running baking soda and ive been doing this for 2 years.

hydrotinkerer
09-04-2008, 08:20 PM
i only run baking soda, its the safest and produces the most. Lye is dangerous. I have no problems running baking soda and ive been doing this for 2 years.

The baking soda by product in HHO gens is chlorine. Which one is more dangerous?:confused:

95CHERJUST
09-17-2008, 10:09 AM
DONT USE THE ROBEIC, its salt content will kill all aluminum over time, BEST BY FAR FOR TIME BEING IS IN THE SAME FAMILY POTASSIUM HYDROXIDE KOH.

My 95 Jeep seems to like it better than the baking soda plus no more rust and makes more amps for less.

As for tunning just got my dual map and 02 efie so need help if someone has played that game on the 95 cherokee 4.0 obd1?

Any good parameters to start with>> thanks!!

HHOJeeper
04-21-2010, 11:22 PM
I just stopped by a gas station to top off my tank after 56.6 miles. It took 2.333 gallons, which works out to 24.26 MPG. That's a 6.42 MPG increase over my last test!

Since that accounts for less than a 1/4 tank, I'm going to now run a full tank, until the light comes on and check my mileage again.

Not a good idea to run your tank so low. The TJ fuel pump cools itself with the fuel in the tank. Not really a good idea to run it past a quarter tank. Not to mention the dirt that somehow magically gets in there... I have already replaced both tank and fuel pump in my TJ. 2.5L

HHOJeeper
04-21-2010, 11:51 PM
I ran a tiny dry cell producing 500mlPM with 1.5inx1.5in of surface space for electrolysis, piped in right above the throttle body. Used spark plug non-foulers as 02 extenders on first upstream sensor then both up and down stream. I went from 15-15.5 mpg EVERY tank to 12.5mpg on first tank. Ran the generator 3 hours a day for 12 days before I removed for cleaning and have not reinstalled yet. Jeep ran better and I started running it the 45 miles to work and not on the return trip. Filling up @ BP beginning and end of each trip. I tested off going to work and on going home as well. Before dismantle I was getting 14.5 mpg with the generator on and 16.5-17.25 mpg with it off. Now that I have tested design I am going to change some things and double plate size before reinstall as well as EFIE

carl3336
06-22-2010, 11:36 AM
hello porkchop, i just wanted to ask you, i have a 97 grand cherokee with a 4.0 also, i hooked up my hho system and my effie, but my mileage really isnt increasing. i an going to try the sodium hydroxide instead of the baking soda like i am currently using but i was instructed to wire my effie into the center wire on my MAP sensor, and thinking this is my problem. Did you wire your effie into the o2 sensor and if so which wire did you use to interrupt your signal. as far as the vaccume goes, i ran into the intake maniford and directly into the top of the carb where the cold air comes in through the air box hose. Thanks for you help and your time, Carl3336
I would try using Sodium Hydroxide. It is lye. I have heard baking soda is not ideal. I found it a Lowes. The brand name was Roebic, and is in the drain cleaners section, and is cheap. It contains 100% Sodium Hydroxide. It is the amps you really want to measure. I have a 97 Jeep G.Cherokee, 6cyl.
I found that O2 extenders don't work, and I have been having problems when hooked to the manifold of the engine drawing in water when hooked there. You may be fine though, just keep an eye out. I installed a EFIE, that's when my mileage picked up. On my Jeep, the O2 sensor compensated for the increased oxygen due to the cleaner burn of hydrogen. I have not messed with the IAT, or MAP sensors. Just the O2. There are 2 on mine, before and after the CAT(catalytic converter). The only one you have to deal with, on my model is the one before the CAT. The one after is for monitoring the CAT, it doesn't do anything for the fuel ratio.
My EFIE is from fuel savers, it is the single deluxe model. It is nicely packaged with test ports, on/off switch, adjusting pot, and a light to let you know it is on.
I hope I have helped, all this information is just what I have found is working for me. I am not a rocket scientist, but then again not dummy.

smallfish
03-31-2011, 07:39 PM
I'll definately keep it in mind. My jeep is sort of a project to prove to my father that just because big auto isn't putting these things on cars doesn't mean they don't work. So I have to carefully go through each step and document what works and how much.

crazyJvw
07-09-2011, 09:02 AM
Does anyone run your vehicle on strait brown gas?
If so is it a constant flow or a pressure regulated flow?

I am new to hho and completely interested, I'm building a 74 beetle drag car that I'm wanting to hook up to a pressurized controlled system. But I'm lacking a drycell and some knowledge!