CEL light?
Thread Starter
Senior Member
Joined: Aug 2001
Posts: 18,261
Likes: 0
From: USA
CEL light?
what is it ?
what does it mean?
if its on, what happens?
should it be on or off?
all of this in reguards to replacing the cat with a test pipe or high flow...
Could you help?
what does it mean?
if its on, what happens?
should it be on or off?
all of this in reguards to replacing the cat with a test pipe or high flow...
Could you help?
Member
Joined: Jul 2001
Posts: 1,940
Likes: 1
From: clearwater, florida, united states
Re: CEL light? (Bbasso)
1 check engine light
2. its a led light that will blink in a certain amout of time to show you what is the reason the light is on. you can check a manuel to see what the amount of blinks corresponds to.
3.it should be off.
you must have a 96 or up car, when you have a test pipe the CEL will go on for a secondary oxygen sensor you sould get a free flowing cat (they suck) if you want the light to go away and to get a misley amount of power.
2. its a led light that will blink in a certain amout of time to show you what is the reason the light is on. you can check a manuel to see what the amount of blinks corresponds to.
3.it should be off.
you must have a 96 or up car, when you have a test pipe the CEL will go on for a secondary oxygen sensor you sould get a free flowing cat (they suck) if you want the light to go away and to get a misley amount of power.
Honda-Tech Member
Joined: Dec 2001
Posts: 2,174
Likes: 1
Re: CEL light? (Bbasso)
3. If it's on, your car is most likely running in 'open loop', also known as the 'limp home' mode. No direct computer control of various engine operating parameters like timing, fuel flow rates at the injectors, etc.
5. (OK, somebody's going to jump all over me for this, but...) Why bother? Removing the cat isn't going to get you any more power. Most modern cats are free flowing enough that the rest of the system design has more limiting factors and influence on performance than the cat does.
5. (OK, somebody's going to jump all over me for this, but...) Why bother? Removing the cat isn't going to get you any more power. Most modern cats are free flowing enough that the rest of the system design has more limiting factors and influence on performance than the cat does.
New User
Joined: Oct 2001
Posts: 315
Likes: 0
From: Glendale, CA, US
Re: CEL light? (Perfectionist)
3. If it's on, your car is most likely running in 'open loop', also known as the 'limp home' mode. No direct computer control of various engine operating parameters like timing, fuel flow rates at the injectors, etc.
5. (OK, somebody's going to jump all over me for this, but...) Why bother? Removing the cat isn't going to get you any more power. Most modern cats are free flowing enough that the rest of the system design has more limiting factors and influence on performance than the cat does.
5. (OK, somebody's going to jump all over me for this, but...) Why bother? Removing the cat isn't going to get you any more power. Most modern cats are free flowing enough that the rest of the system design has more limiting factors and influence on performance than the cat does.
On my car when i put on a "high-flow" cat...I could REALLY feel the difference. The car wouldnt pull as good...and was MUCH MUCH less responsive. After taking it off I could notice the increase in pull and the responsiveness. But I have a stock muffler thats probably why...On a car with not so resitrictive exhaust...taking out the cat wont help much..as you will lose MOST of your backpressure. In my case..I lost a little bit..but not all...cause the stock muffler is restrictive.
Somebody here said that hondas dont run in "limp" mode when your CEL is on for a test pipe. In either case..If you are OBD2 and were to get a test pipe..get one that has an O2 sensor "hole" so you can put your O2 sensor in so you wont get the CEL..or run in "limp" mode (again dunno if hondas run in limp mode)
Honda-Tech Member
Joined: Dec 2001
Posts: 2,174
Likes: 1
Re: CEL light? (4g63turbo)
Just putting the second O2 sensor behind the test pipe will still give you a CEL. The ECU uses the second sensor to monitor the job the cat is doing. A test pipe will of course not clean up the exhaust.
Depending on the cause for a CEL, the ECU will revert to a programmed fuel map.
Depending on the cause for a CEL, the ECU will revert to a programmed fuel map.
Senior Member
Joined: Jun 2004
Posts: 10,399
Likes: 3
From: Chicagoland, IL
Re: CEL light? (Bbasso)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso »</TD></TR><TR><TD CLASS="quote">what is it ?
what does it mean?
if its on, what happens?
should it be on or off?
all of this in reguards to replacing the cat with a test pipe or high flow...
Could you help?</TD></TR></TABLE>
Did you try searching?
what does it mean?
if its on, what happens?
should it be on or off?
all of this in reguards to replacing the cat with a test pipe or high flow...
Could you help?</TD></TR></TABLE>
Did you try searching?
Senior Member
Joined: Jun 2004
Posts: 10,399
Likes: 3
From: Chicagoland, IL
Re: CEL light? (Chris F)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris F »</TD></TR><TR><TD CLASS="quote">Did you try searching?</TD></TR></TABLE>
Found it:
https://honda-tech.com/zerothread?id=978933
Found it:
https://honda-tech.com/zerothread?id=978933
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
vtec_racer_2kgsr
Acura Integra
8
Sep 20, 2002 05:09 PM