CEL after gutting cat
03-16-2007 | 02:07 PM
#26
Originally Posted by mmats69
if the CEL is for O2 sensor, then yes it will affect performance. the ECU senses too much emmissions so it will pull timing to get back in compliance. put a high-flow cat on there and be done with it. oh yea, you just voided your warranty in its entirety. period.
Last edited by WantedTwo; 03-16-2007 at 02:11 PM.
03-16-2007 | 03:42 PM
#27
Rotary Superstar
Joined: Jul 2005
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From: Maryland
Originally Posted by StealthTL
(Sounds like MM has a fix that might work - it would respond to the fluctuations the ECU sends....)
Your scenario might work with an old OBDI car, but the OBDIIs keep a record of when the light was reset, and "TODAY 11:00am" might ring some alarm bells.
I'm not sure if it's after one or two "start cycles" that the computer stores a "pending" code, it will set a CEL if the fault re-occurs. That could be a fail too, depending on how sharp the tech is....
S
Your scenario might work with an old OBDI car, but the OBDIIs keep a record of when the light was reset, and "TODAY 11:00am" might ring some alarm bells.
I'm not sure if it's after one or two "start cycles" that the computer stores a "pending" code, it will set a CEL if the fault re-occurs. That could be a fail too, depending on how sharp the tech is....
S
The techs here are around mid-20's, and they are basically just at the job looking to get as many cars through as quickly as possible, to get back on a break. Most of the time when I take a car there, they make we wait as they finish up their cigarette...
But, performing the test won't make the ECU go into check mode? Like, the ECU won't start checking all systems? To my knowledge what they will see is only current information, which will not show a CEL, and I should pass.
MM, can you go into more detail? I've never heard of that.
03-16-2007 | 05:42 PM
#31
Originally Posted by AdRoCK3217
MM, can you go into more detail? I've never heard of that.
With no CAT, the voltage is a hair too high.
If you put a pot between the senso output and ground, you can trim the voltage levels down to where they would be if the CAT was in place.
Originally Posted by RXSeven1
why did mazda make our cars so damn smart
Originally Posted by speeddemon32
Mazda Maniac.... you always have the best avatars!
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