Actual cost of a catalytic converter?

H

Holiday

Member

:

Protege 5

• Jun 20, 2018

• #1

I'm seeing prices at Rock Auto for a replacement cat between $150 and $340 USD. My local autoshop was quoting me $900 CAD + labour. So am I correct that's a significant mark up? Just wondering if I'm looking at spending a grand on replacement or not.

Not sure if it's the pre cat or the final cat that is the issue at this point. Had a rear 02 sensor replaced and then got a new code about cat efficiency. I'm thinking it might be the first catalytic converter, the one on warm up, that's the issue but can't say for sure at this point. I know the car likes to rev to 1500 RPM upon start and then climbs down to a resting 500-700 RPM after about 4 mins. Is this because of the two catalytic converters?

 

S

stormkyori

:

Mazda Protege5

• Jun 20, 2018

• #2

I saved considerable money doing it myself.

 

P

pcb

The Diagram Dude

:

2002 MP5

• Jun 20, 2018

• #3

That's your pre-cat.

Just do the non-fouler trick and it will clear your code and cost you about $20.

Check the link on the last post... It comes pre-built now but it doesn't appear to ship to Canada...
You can probably find it somewhere else that ships to Canada or build one yourself.

https://www.mazdas247.com/forum/sho...bs-by-a-noob&p=6416347&viewfull=1#post6416347

 

P

pcb

The Diagram Dude

:

2002 MP5

• Jun 20, 2018

• #4

Holiday said:

. I know the car likes to rev to 1500 RPM upon start and then climbs down to a resting 500-700 RPM after about 4 mins. Is this because of the two catalytic converters?

Click to expand...

That's just the way the car warms up. It takes a bit longer during the winter.

 

N

NaturalFlavored

:

Mazda P5

• Jun 20, 2018

• #5

If your going to do the non fouler just get a 4-1 header too. But the non fouler is super easy, just need a good drill.

 

P

pcb

The Diagram Dude

:

2002 MP5

• Jun 20, 2018

• #6

NaturalFlavored said:

... But the non fouler is super easy, just need a good drill.

Click to expand...

Or this... Already built, $10, but doesn't ship to Canada.

 

P

pcb

The Diagram Dude

:

2002 MP5

• Jun 20, 2018

• #7

I found this one!!!

It ships to Canada.

You just unscrew your second O2 sensor, thread this into the hole, then thread your O2 sensor into it and your code is gone.

 

H

Holiday

Member

:

Protege 5

• Jun 20, 2018

• #8

Hey thanks! So what does the mod do? Just trick the sensor in some way or am I bypassing the pre-Cat?

 

P

pcb

The Diagram Dude

:

2002 MP5

• Jun 20, 2018

• #9

It tricks the sensor and ECU into thinking the pre-cat is fine.

The pre-cat does very little as far as reducing emissions. It only works for two or three minutes on a cold start until the main cat heats up and starts working.

 

H

Holiday

Member

:

Protege 5

• Jun 20, 2018

• #10

pcb said:

It tricks the sensor and ECU into thinking the pre-cat is fine.

The pre-cat does very little as far as reducing emissions. It only works for two or three minutes on a cold start until the main cat heats up and starts working.

Click to expand...

Ok thanks. So aside form when people buy aftermarket header the only reason people do the non-fouler mod is when the Pre-Cat is on the fritz and they want they light to go away?

 

P

pcb

The Diagram Dude

:

2002 MP5

• Jun 20, 2018

• #11

Correct. To clear the code and pass emissions without having to spend $1000 on a new pre-cat.

The car will run fine with no problems.

 

H

Holiday

Member

:

Protege 5

• Jun 21, 2018

• #12

pcb said:

Correct. To clear the code and pass emissions without having to spend $1000 on a new pre-cat.

The car will run fine with no problems.

Click to expand...

Great, saved me some money there. Cheers.