Header problems? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

REVo · 05-07-2007, 04:19 PM

alright let me start by saying i have searched through many threads reading about others problems with o2 sensors and mafs...i just help install some pace setter headers on a 89 240sx ka24e, the install went in flawlessly....we took it for a test drive and where noticing that when we put our foot down the car was hesitating and bogging...with a huge lost of performance...the next day we checked the codes and where getting a code 55 ( no problems ).... so we tried it again and same thing...

today we changed the o2 sensor thinking it could be that...which made it not hesitate and bog so much but we still have a huge lost of performance..i thought it could be the MAF but where not getting any code for it...

Any help is greatly appreciated and thank you in advance.

REVo · 05-07-2007, 09:06 PM

Still same problem...

Creizai · 05-07-2007, 10:08 PM

Well start off by making sure you dont have any leaks on any of your gaskets of your new header. Also make sure when you torqued down the bolts you went in the order the manual of your car.

REVo · 05-07-2007, 10:39 PM

just went out retorqued and checked the gaskets everything was as it should be...went for another test drive and same thing

allmotorKA · 05-08-2007, 10:58 AM

Double check your spark plug wires. Firing order might be off.

REVo · 05-08-2007, 11:44 AM

Wires are on there good and tight..

240trainee · 05-08-2007, 01:28 PM

If you installed headers on a KA-E, that would be your problem right there, you have something extra

but yea, check the wire to the o2 sensor, but it should still run.

check firing order

check for exhaust leaks.

other than that I dunno.

REVo · 05-09-2007, 12:23 PM

Pulled off the pace setter headers and put the stock ones back on...still same problem..it only really hesitates under full acceleration.

los_inc · 05-09-2007, 12:47 PM

remove your egr.
and check if you can
rev past 2500 rpm
-los

punxva · 05-09-2007, 01:00 PM

check your fuel filter too while your at it

240trainee · 05-09-2007, 01:12 PM

Dude, it's a header.

You messed with something besides the header, figure out what that is.

PRADOgy · 05-09-2007, 01:20 PM

header has nothing to do with that bro, chck plugs,wires,and coil.... its either not combusting right.. so thats either the fuel source or spark

05-07-2007, 04:19 PM	#1
REVo Join Date: Jan 2007 Location: Santa Rosa Age: 37 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	Header problems? alright let me start by saying i have searched through many threads reading about others problems with o2 sensors and mafs...i just help install some pace setter headers on a 89 240sx ka24e, the install went in flawlessly....we took it for a test drive and where noticing that when we put our foot down the car was hesitating and bogging...with a huge lost of performance...the next day we checked the codes and where getting a code 55 ( no problems ).... so we tried it again and same thing... today we changed the o2 sensor thinking it could be that...which made it not hesitate and bog so much but we still have a huge lost of performance..i thought it could be the MAF but where not getting any code for it... Any help is greatly appreciated and thank you in advance. __________________ WTB: 89-94 240sx coupe auto or manual pm

05-07-2007, 09:06 PM	#2
REVo Join Date: Jan 2007 Location: Santa Rosa Age: 37 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	Still same problem... __________________ WTB: 89-94 240sx coupe auto or manual pm

05-07-2007, 10:39 PM	#4
REVo Join Date: Jan 2007 Location: Santa Rosa Age: 37 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	just went out retorqued and checked the gaskets everything was as it should be...went for another test drive and same thing __________________ WTB: 89-94 240sx coupe auto or manual pm

05-08-2007, 11:44 AM	#6
REVo Join Date: Jan 2007 Location: Santa Rosa Age: 37 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	Wires are on there good and tight.. __________________ WTB: 89-94 240sx coupe auto or manual pm

05-08-2007, 01:28 PM	#7
240trainee Post Whore! Join Date: Jun 2003 Location: Richmond, VA Age: 38 Posts: 3,861 Trader Rating: (1) Feedback Score: 1 reviews	If you installed headers on a KA-E, that would be your problem right there, you have something extra but yea, check the wire to the o2 sensor, but it should still run. check firing order check for exhaust leaks. other than that I dunno. __________________ Team Pterodactyl SHARK ATTACK!!! LookoutDrift

05-07-2007, 10:08 PM	#3
Creizai Zilvia Junkie Join Date: Mar 2005 Location: Cincinnati / Gaithersburg Age: 39 Posts: 360 Trader Rating: (2) Feedback Score: 2 reviews	Well start off by making sure you dont have any leaks on any of your gaskets of your new header. Also make sure when you torqued down the bolts you went in the order the manual of your car.

05-08-2007, 10:58 AM	#5
allmotorKA Zilvia Member Join Date: Nov 2001 Location: SoCal Posts: 204 Trader Rating: (1) Feedback Score: 1 reviews	Double check your spark plug wires. Firing order might be off.

05-09-2007, 12:23 PM	#8
REVo Join Date: Jan 2007 Location: Santa Rosa Age: 37 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	Pulled off the pace setter headers and put the stock ones back on...still same problem..it only really hesitates under full acceleration. __________________ WTB: 89-94 240sx coupe auto or manual pm

05-09-2007, 12:47 PM	#9
los_inc Zilvia Addict Join Date: Apr 2006 Location: New Joisey Bro. Age: 40 Posts: 826 Trader Rating: (15) Feedback Score: 15 reviews	remove your egr. and check if you can rev past 2500 rpm -los

05-09-2007, 01:12 PM	#11
240trainee Post Whore! Join Date: Jun 2003 Location: Richmond, VA Age: 38 Posts: 3,861 Trader Rating: (1) Feedback Score: 1 reviews	Dude, it's a header. You messed with something besides the header, figure out what that is. __________________ Team Pterodactyl SHARK ATTACK!!! LookoutDrift

05-09-2007, 01:20 PM	#12
PRADOgy Zilvia FREAK! Join Date: Apr 2007 Location: Japan Age: 39 Posts: 1,161 Trader Rating: (0) Rides Gallery: PRADOgy Feedback Score: 0 reviews	header has nothing to do with that bro, chck plugs,wires,and coil.... its either not combusting right.. so thats either the fuel source or spark

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