Supra Forums banner

1 - 20 of 30 Posts

·
Stock Twins King
Joined
·
4,546 Posts
Discussion Starter · #1 · (Edited)
EDIT August 24, 2007.

As stated below, Caspers is no longer available. There is a new solution to fixing this problem. Jeremy Blackwell from "Speedforsale.com" has developed a totally Plug N Play O2 faker. No wires need cutting, no need to worry about 2nd O2 at all.

See NEW link HERE--->:[http://www.speedforsale.com/supraparts//product_info.php?cPath=26&products_id=323

This is the new version of a perfect problem solver for CEL on 1996 + OBDII cars.

_________________________________________________________________

I will keep some of the below stuff here for reference, but basically no longer needed.


READ FROM Caspers WebPage:-Effective 8/2/2006

"At a recent meeting of the Board of Directors, Casper's Electronics, Inc. executives have decided to discontinue the sale of, support for, warranty of, and all affiliation with the O2 Simulator product line. We will be focusing our resources on new and exciting products for the high performance aftermarket automotive industry!

We apologize for the inconvenience. Please check back with us often to see what innovative items we have store! "


I am therefore "removing" all referenaces from Caspers. Meantime I will search for an alternate brand. If someone know's of one, PM me, and I will add to this thread.

 

·
SupraCop
Joined
·
407 Posts
I dont know to much when it comes to cars.
could you explain what this is for.
I check out the site and it said Restores MIL indicator when exhaust is changed.
what is an MIL indicator and should I get one for a BPU car.
 

·
Stock Twins King
Joined
·
4,546 Posts
Discussion Starter · #6 ·
When you install a Down Pipe, you loose your Oxygen Sensor because you no longer have a Cat. The MIL or Check Engine Light comes on because the onboard ECU tells you something is wrong with that Bank 02. So you need to install a "simulator" that tricks the ECU into thinking that the Cat is still there. This also will eliminate the MIL Check Engine Light from coming on.

Stu
 

·
Registered
Joined
·
2,808 Posts
sorry for reposting on an old post but no one will answer me.
Ok ive installed an 02 fooler on my 98 twice now, with no luck.
I am begining to think im throwing a different code.

Ok as stated above "you must take out drivers side door to install"

I must be doing some thing wrong because I installed it at the ecu with the active wire to pin 47. the others to power and ground. It is getting power and ground cause it "winks" at me.

If im taking the wrong steps please help me the mils killing me.

Daniel
 

·
Stock Twins King
Joined
·
4,546 Posts
Discussion Starter · #8 ·
Removing the door thing is a little bit of an overkill. Just need to take the drivers seat out because it makes it easier to get to the wires.

Daniel, The only thing that I can see that *may* be the problem is that you MUST cut the wire going away from Pin 47. You didnt say you cut the wire at the ECU, you say "installed"

It should work! Its a very simple install. + (power) - (ground)
and the signal wire going to pin 47 (or under the seat)

Stu
 

·
Registered
Joined
·
1,255 Posts
i just read this... why wouldn't you just install it @ the ecu and cut 47? seems a lot easier than taking out the driver's seat.

i got the mvp wire harness and wired it in this way on my 98. no problems.
 

·
Stock Twins King
Joined
·
4,546 Posts
Discussion Starter · #10 ·
There is really no reason why you can't install this at the ECU. The under the seat option makes it a lot easier for people that are afraid of digging into the ECU. I know of people who freak when it comes to cutting/splicing there! Besides, it is a great place to put the unit, under the seat, cut the one wire and be done with it!

Stu
 

·
SupraForums Sponsor
Joined
·
1,020 Posts
Actually, the last few Casper's O2 sims that we have installed have been plug and play, with no splicing required. Just pull the driver's seat, pull the carpet back, unplug the stock rear 02 sensor, and plug in the sim :) They changed it a while back.
 

·
Newbie
Joined
·
11,221 Posts
What's this thing under teh driver seat. I just got a Jasper O2 simulator. https://www.casperselectronics.com/...creen=PROD&Product_Code=104037&Category_Code=

From my understanding, I thought you wire it into the harness next to the rear sensor itself. I thought you have to jack up the car and wire this into the wires near the DP. Can someone take some pictures for me? Would appreciate it a lot. I have a 97.



Also can someone put this in a lame term I might understand?
PIN#1=Brown/White *No connections*
PIN#2=Black/Red B+ *connect to Caspers Pink (Red)
PIN#3=Red/Blue (Cut this at the harness) and attatch
the Caspers Purple to the ECU side of cut wire. Tape off
cut wire that went to the 02 (no longer needed)
PIN#4=Brown=Ground connect toCaspers Black & Blue


What's with pin#4? It connects to both the black and blue wire from the Casper simulator?
 

·
Stock Twins King
Joined
·
4,546 Posts
Discussion Starter · #14 ·
The 4 "Pins" refered too are for the OEM 4-wire harness under the drivers seat. The 02 wire is fed through the chassis under the drivers seat, and is where the factory harness is located. From there the wires go to the ECU. So when I say "Pin #1" that is the Pin # on the factory harness under the seat. The next phrase is telling you what colored Casper Wire you connect to the factory harness wire.

Again, the purpose of the Caspers unit is to "fake" the ECU that the 02 is still functioning properly by providing a "fake" signal. So basically, other than providing the 12V and Ground, you are providing the "signal" wire that the 02 normally is sending to the ECU by cutting and replacing it with the Casper's signal wire.

The "Ground" wire happens to connect to 2 Casper wires. It is the design of te Caspers for some reason (2-grounds)
 

·
Registered
Joined
·
249 Posts
Stu Hagen said:
There is really no reason why you can't install this at the ECU. The under the seat option makes it a lot easier for people that are afraid of digging into the ECU. I know of people who freak when it comes to cutting/splicing there! Besides, it is a great place to put the unit, under the seat, cut the one wire and be done with it!

Stu
Stu -

I am going BPU this weekend and I bought a used fields wiring harness. I would like to cut into this harness by the ECU rather than cutting some wires under the drivers seat.

I looked @ the terminals of the ECU and is seems there are two pins I might be able to tap into. Pin 47 [Ox2] on the B connector (Sub Heated Oxygen Sensor) and Pin 72 [HT2] (Sub Heated Oxygen Sensor) also on the B connector.

Can you shed some light on how you installed the O2 Simulator on the ECU side, not under the drivers seat.

Thanks,
 

·
Newbie
Joined
·
11,221 Posts
I'll put this in here since I don't know whereelse to put it. I have a 97. I installed the Casper's o2 fooler a while back. I just recently converted to OBDI. I was wondering if I can leave the unit still attached or must I remove it. And does it do any harm by leaving it vs. removing it?
 

·
SupraForums Sponsor
Joined
·
1,020 Posts
We got the male/female wire harnesses that I had made in today, and I will test fit them tomorrow. The new oxygen sensor simulators will be here within a week. They are NOT the cheap ebay type that is a simple resistor. These pull off of power going to the rear o2 sensor power wire and have a microchip that sends a fluctuating signal back to the ECU so it thinks there is an actual sensor there. It also has a red LED on the box so you can verify it is working. They will look similar to the o2 sim on our webpage, but will be more streamlined.

The cheap resistor type 'o2 simulators' send a capped off voltage reading back to the ECU that does NOT fluctuate, and can often times still cause a check engine light.

So, with our new o2 simulator, if your rear o2 sensor gets clogged with lead from running race fuel or otherwise goes bad and can't send back a proper signal, you will still not get a check engine light since it is it's own unit. However, the cheap ebay resistor type simulators REQUIRE THAT YOUR REAR O2 SENSOR WORKS PROPERLY, otherwise you'll get a check engine light.

We should have our first batch of 10 units made by the end of next week. The price should be the same as it is now.
 
1 - 20 of 30 Posts
Top