what resistor should i get?

Home / the12volt's Install Bay / General Discussion / what resistor should i get? (

Topic Closed)

Welcome Guest :)

Members

< Prev Topic Next Topic >

kmn5

Copper - Posts: 66

Joined: April 21, 2003

Location: United States

Posted: October 08, 2007 at 4:20 PM / IP Logged

Hi all,

I'm looking for a resistor that will take a 12vdc power source and provide a resistence of 14 ohms.

+12vdc --->>> (resister) ----> output reduced by 12 ohms

I tried serveral online calculators with no luck

thanks

i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 08, 2007 at 10:43 PM / IP Logged

What are you trying to do?

kmn5

Copper - Posts: 66

Joined: April 21, 2003

Location: United States

Posted: October 08, 2007 at 10:49 PM / IP Logged

My ecu is throwing a code because the O2 sensor has been replaced with a wideband O2 (which also feeds the ecu the regular narrow band signal it wants)

BUT the ecu also check to make sure the heating element in the O2 sesnor is working. Which is not there anymore so it thinks the Cat is bad, but it's not

anyways the heating element has a resistance of 11-16 Ohm.

So I just need to trick it into thinking the heating element is working

thanks

i am an idiot

Platinum - Posts: 13,667

Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 08, 2007 at 11:36 PM / IP Logged

TMC-25-15-ND is the digikey part number. digi-key.com It is a 15 ohm 25 watt resistor. You could get by with a 10 watt, but it is going to run VERY hot. The 25 watt resistor will get warm.

jmelton86

Gold - Posts: 1,228

Joined: February 07, 2007

Location: South Carolina, United States

Posted: October 08, 2007 at 11:43 PM / IP Logged

i am an idiot wrote:

TMC-25-15-ND is the digikey part number. digi-key.com It is a 15 ohm 25 watt resistor. You could get by with a 10 watt, but it is going to run VERY hot. The 25 watt resistor will get warm.

Is this guy freakin' awesome, or what!?

2013 Kia Rio -90a alternator

DDX470HD GTO14001 GTO1014D (x3)

Big3 in 1/0G

1/0G to GTO14001

kmn5

Copper - Posts: 66

Joined: April 21, 2003

Location: United States

Posted: October 08, 2007 at 11:47 PM / IP Logged

i am an idiot wrote:

TMC-25-15-ND is the digikey part number. digi-key.com It is a 15 ohm 25 watt resistor. You could get by with a 10 watt, but it is going to run VERY hot. The 25 watt resistor will get warm.

that's awesome what resistor should i get? -- posted image.

Thanks!

before this I was getting anything from (1/2 watt 15 ohm) to a (10 watt 20 ohm) advice (guy who said this, noted it does get very very hot, but iddn;t know what else to get)....

godd dan it

Copper - Posts: 446

Joined: July 01, 2004

Location: New Jersey, United States

Posted: October 19, 2007 at 11:55 PM / IP Logged

Is the o2 sensor is behind the cat?

kmn5

Copper - Posts: 66

Joined: April 21, 2003

Location: United States

Posted: October 20, 2007 at 12:15 AM / IP Logged

godd dan it wrote:

Is the o2 sensor is behind the cat?

one of them is

Mad Scientists

Silver - Posts: 380

Joined: February 07, 2004

Location: United States

Posted: October 20, 2007 at 9:07 AM / IP Logged

Why did you change O2 sensor styles?.. If it's an OBDII car (and with mention of upstream and downstream sensors, as well as heaters, it sounds like it is), you might run into other problems. One thing that comes to mind is an error code for O2 sensor not responding quick enough. The heated O2 sensors are used because the manufacturers wanted to get the control system into closed loop quicker, which meant they had to get the O2 sensors on-line quicker, hence the heaters.

Couple thoughts here.. Year, Make, and Model? Depending on the manufacturers threshold, you might be able to use a different resistor. Toyota's threshold on some of their vehicles is 0.25 to 8 amps on the heater circuit.. anything within that spec will keep the SES light off. A 25 ohm 10 watt resistor would work there.

If you find that you've opened a can of worms with replacing the O2 sensor with a non-stock unit, just get one of these

http://www.google.com/search?hl=en&q=O2+sensor+bung

and install another O2 sensor in the exhaust stream.

Jim

Search for other posts by Mad Scientists

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

what resistor should i get?

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.