prelude1999sh

Need help!
engine light it on.
last year i bought this prelude stock catalytic never engine light ON.
last month, i change aftermarket pipe+full exhaust. engine light it on.
but the aftermarket pipe has 02sensor. i hook up the sensor on it. but i dun understand how come engine light still on.
could some1 help. thanks...

dontbuyprelude

your header probably has a test pipe not an actual catalytic converter. because of this your secondary o2 sensor is tripping out because its getting readings off the wall.

Your solutions: purchase a catalytic converter and have it welded into your exhaust.

purchase a high flow cat. this may pose some problems with SMOG testing.

or do the o2 simulator mod. i have this mod myself and no cel for over 3k miles.http://http://www.preludeonline.com/...ective-168992/this is probably your cheapest fix

__________________
David
01 SSM SH

93 d15 auto del slo gone and FORGOTTENexcept for a few memories....

Kronn 98SH

First, find out why your Check Engine Light is on, instead of just guessing.

Another DIY ATTS, ABS, & CEL (Check Engine Light) DTC

__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12
2006 CRF150F - sold
2006 YZ250F - sold

prelude1999sh

let me try to buy this MAGNAFLOW CATALYTIC CONVERTER UNIVERSAL
MAGNAFLOW CATALYTIC CONVERTER UNIVERSAL 2.5" IN 2.5 OUT : eBay Motors (item 170461460674 end time May-18-10 11:33:27 PDT)
i take to the shop to weld it.
take off the aftermarket test pipe. put this welding cat on...
let see light light on or no. i reply u guy... ^^

thanks for help

Kronn 98SH

Or not.

__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12
2006 CRF150F - sold
2006 YZ250F - sold

dontbuyprelude

you really should check what your cel codes are. MORE THAN LIKELY its your secondary o2 sensor but you should double check just in case. kronn hooked it up with an excellent link on how to pull the code yourself

__________________
David
01 SSM SH

93 d15 auto del slo gone and FORGOTTENexcept for a few memories....

Lude Acts

You probably fouled the o2 sensor by running it with a test pipe without a non-fouler. Pull the code and find out. It's the only way to know for sure.

__________________

The Japanese have a saying......"The nail that sticks out gets hammered."

prelude1999sh

i already order the MAGNAFLOW CATALYTIC CONVERTER UNIVERSAL 2.5" IN 2.5 OUT
i will weld on this week it might ship on may-7-10

i order the Catalytic 2.5in/out ...
because my header is Jasma 4-2-1 2.5inch+ this catalytic 2.5inch + aftermarket exhaust 2.5inch ... so it fits perfect.
stock catalytic not event 2.0inch. so suck

Kronn 98SH

Can I kick you in the nuts when replacing your cat doesn't fix your problem?

__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12
2006 CRF150F - sold
2006 YZ250F - sold

D0EKUN

Ummm, yea. It TOTALLY fits perfect.

BTW, when is the suck event?? I'd like to get me some of that but I'm 2.5 inches. Is that cool?

__________________
Brains.

dontbuyprelude

oh boy. i feel like its my fault too

__________________
David
01 SSM SH

93 d15 auto del slo gone and FORGOTTENexcept for a few memories....