hhoforum

mmorgan _4444 2 post s 21-Jul-2008 9:17 PM	Is there a special O2 sensor that should be used to help the engine fuell management system? I have a 97' Jeep 4.0 with multiport fuell injection.
Anonymous Guest 0 post 22-Jul-2008 11:14 AM	Yes it is located between the manifold and cat. converter. It tells the computer to add more gas or air to the mixture. You have to install a EIFE to use HHO are your vehicle will run to rich. Eagle Research is the cheapest I have found.
swizzle 1 post 2-Aug-2008 5:16 AM	how can I get around the Oxygen sensor in a 2001 toyota 4runner? I was told that an Oxygen sensor extender can not be fitted on my 4runner.
vjm530 2 post s 12-Aug-2008 3:53 PM	I was told that 'extenders' are only required on the O2's in FRONT of the catalytic converter and not the rear.
scrode 1 post 1-Sep-2008 11:19 AM	Most systems will need a EFIE (electronic fuel injector enhancer) hooked up to the 02 sensor. if you have a maf sensor you will need to hook it up to that. If you have a map sensor you will need a map sensor enhancer hooked to that, to get any real results from HHO. extenders don't really work very well in fooling the ecu, from what I've learned. I have a 2002 honda acccord that gets approx 40 mpg was 28 mpg. I have a 7 plate design +nnnnn- hooked to the vacuum after the map sensor. at around 10 amps. been running it for about a month.
moto4 Guest 0 post 5-Sep-2008 5:45 AM	I have a 2001 ford explorer with 2 cell hho, anyone know if I need a map sensor kit, or can just use o2 sensor extendor?
fozzy 5 post s 5-Sep-2008 7:05 PM	If you decide to try extenders the can be buy at autozone or other parts house. Ask for a spark plug noon fouler # 42002. You will need to enlarge the hole at the thread end to 1/2 inch. I used a small step bit which has a max hole size of 1/2 inch. See my message and web page for update results
Zolar1 1 post 7-Sep-2008 9:37 PM	I have tried an O2 extender, an EFIE, and a MAP mod. STILL NO INCREASE. The vehicle is a 2004 Chevy Classic, 2.2L Ecotech I4 engine. I haven't tried the rear O2 extender MOD yet. Also, I took the vehicle to a GM Master Mechanic. He hooked up the dealer's computer. Injector Pulse Width DOES NOT CHANGE when switching between Hydroxy and no Hydroxy. Any suggestions? Pulling what little hair out I have left... PS Please email me as I am not sure if I will receive notice of comments from this site. Zolar1 at hot mail dot com
fozzy 11 post s 14-Sep-2008 9:45 PM	I have added additional reference links to my web site. The are several good articles that explain the reasons why little or no succeed happens on some cars. Generally speaking the PCM/ECM still compensates for changes in the outputs of O2 and MAF sensors if they are too far different from what the ECM was programed to look for. Look at several articles liisted under MAF and O2 sensor catagories on my links page. Under the various car brands as between them they give a more complete understanding. No single one of the articles contain all of information. That is why it is necessary to read as many as you can. Just because the article is not about you brand of car. Don't ignore what is contained. Much of the information spans across several types of vehicles.
4.0_97 Guest 0 post 17-Sep-2008 5:34 PM	I have installed a cell that puts out @ l lpm and have installed an efie and a map enhancer. I have gained about 2 miles per gallon and have not been able to get better than that. I was told that I had to rest the ecu by turning on the ignition key, remove the pos cable from the battery and short it to the neg cable for 30 seconds. Then turn on the head lights, turn them back off and then turn off the ignition key. This I was told would reset the ecu and that after 50 cycles @ 500 miles that it would finish learning the new mixer and driving habits. Don't know if it is true but I did it and will find out. Gold luck.
4.0_97 Guest 0 post 17-Sep-2008 5:43 PM	This is for Zolar 1. If you have a voltmeter connect one probe to the wire from the o2 sensor and the other probe to the wire going to the ecu. You should see @.2volts. If you connect the ground probe to ground and check the wire from the 02 sensor then it should be moving from @.05 to .9 votls very rapidly. Now it will not show anything until it is up to operating temp. good luck
wgw100 Guest 0 post 18-Sep-2008 3:20 PM	To Zolar 1, Is your ECU going into closed loop? If not, it will run on default parameters and not respond to the O2 and other sensors. If the check engine light is on, it is not in closed loop.
John Guest 0 post 4-Oct-2008 6:57 PM	On your 97 4.0 Jeep here is some info that may be helpful. Reset your ECU by removing the Pos cable from the battery and hold it to ground for 30 sec. Reconnect it to the battery, turn the key to on but don't start it, turn your headlights on then off. This is supposed to reset your learned memory for controlling the fuel. It will relearn and adjust your fuel mix in about 1 tank full or so. Also when making adjustments make them in small incriments and drive it that way for awhile before readjusting. I also have a 97 4.0 Jeep. This is info I have picked up. I just reset mine and have to drive for awhile to see results.
John Guest 0 post 4-Oct-2008 6:59 PM	For 97 4.0. Oh and don't forget to turn your key off. (:D good luck
Anonymous Guest 0 post 8-Oct-2008 1:03 PM	I guess if I would have read more I would have noticed that I said the same thing twice on the 97 4.0 Jeep. Sorry about that. Today I tried to make a torch. I used the cheap 1 way valve from Walmart that is suggested some where? I added a bubbler just incase and good thing I did. It flashed all the way to the bubbler since my cell has a slight pulsed output. So I don't recommend anyone using that 1 way valve.

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