Want to remove/disable your rear O2 sensor without a CEL? Here's how..

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Apr 6, 2008, 10:12 AM

#226

mitsuboost30

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Still waiting on the CEL fix to completely eliminate the O2!!

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Apr 10, 2008, 03:56 PM

#227

Oettinger

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10kohm/.25 amp resistor is a fake.

. Other solution using resistors??

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Apr 10, 2008, 06:25 PM

#228

tephra

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apparently 2x 100Ohm/10W in parralel should work (for a combined resistance of 50ohm)

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Apr 12, 2008, 10:46 AM

#229

Oettinger

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Ok! Thanks, other problem... one solution for P0125 in evo VIII?? my Min coolant in ecuflash is "0".

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Apr 12, 2008, 05:50 PM

#230

Jack_of_Trades

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Quote:

Originally Posted by Oettinger

10kohm/.25 amp resistor is a fake.

. Other solution using resistors??

Get two 100 ohm 10 watt resistors from radioshack and twist the ends together so they are in parallel with each other(this makes them into a 50 ohm 10 watt resistor basically). Connect them between the heater wires. Be warned, they do get awfully hot.

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Apr 13, 2008, 12:11 AM

#231

tephra

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P0125 is (i think) incorrect, some ROMID's have P134 (i think) which is something like "rear 02 no activity" which makes MORE sense than P125.

your best bet would be not to disable the rear02 using the FAA bit, but use the rear02 simulator instead

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Apr 13, 2008, 05:40 AM

#232

Oettinger

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Quote:

Originally Posted by tephra

Simulator-tephra for my 96530006 rom (evo viii)?? where!!!

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Apr 13, 2008, 07:02 AM

#233

tephra

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v5 thread bro

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Apr 13, 2008, 01:04 PM

#234

Oettinger

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Quote:

Originally Posted by tephra

v5 thread bro

Very thanks!!

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Apr 13, 2008, 06:31 PM

#235

EvoBroMA

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Quote:

Originally Posted by Oettinger

10kohm/.25 amp resistor is a fake.

. Other solution using resistors??

10K .25W seems to work for me?

edit:or not. going to try the 50 Ohm 10W

Last edited by EvoBroMA; Apr 14, 2008 at 05:07 AM.

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Apr 14, 2008, 08:52 PM

#236

andrewzaragoza

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i did what jack of trades said 2 100ohm/10w resistors in parallel. it seem to be working fine so far and the heat is very minimal.

update: well im in a long drive right now and it seemed to work the first 2 hrs but when i stopped in a rest area and then started driving again i got the cel. used scan tech and got 2 code: P0133: Heated Oxygen Sensor Circuit Slow Response & P0136: Heated Oxygen Sensor Circuit

cleared the code. i guess i could try a different resistor. any ideas?

Last edited by andrewzaragoza; Apr 19, 2008 at 08:21 PM.

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Apr 19, 2008, 08:27 PM

#237

andrewzaragoza

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any ideas? has this happened to anyone?

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Apr 19, 2008, 10:55 PM

#238

Oettinger

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Quote:

Originally Posted by andrewzaragoza

any ideas? has this happened to anyone?

good solution for evo-ix is ecuflash tutorial in this previews pages.

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Apr 20, 2008, 06:11 AM

#239

andrewzaragoza

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Quote:

Originally Posted by Oettinger

good solution for evo-ix is ecuflash tutorial in this previews pages.

are u referring to mfred's ecu changes? i have done all of that. i was thinking maybe a 50 ohm is too much resistance for the ecu. ill try a different resistor.

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Apr 20, 2008, 07:18 AM

#240

Jack_of_Trades

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Quote:

Originally Posted by andrewzaragoza

are u referring to mfred's ecu changes? i have done all of that. i was thinking maybe a 50 ohm is too much resistance for the ecu. ill try a different resistor.

I suggest running two 50ohm, 10 watt resistors from RadioShack in parallel to create a 25ohm resistor. The current is split between the two resistors to minimize how hot they'll get. Each resistor will have around 4 watts of power being dissipated through it, less than half of its maximum rating.

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