jspec 4agze

Krimzen · 01-23-2007, 07:18 PM

Just wondering if they ever made a 4agze without the O2 sensor. I have the gze version that has no egr system, no port, no wires. I think it might be the same for the o2 but I am not sure. I havent found the wire for the o2 sensor yet.

CpuZapper · 01-23-2007, 07:38 PM

You kinda gotta have the O2 sensor. It's what the engine uses to meter fuel in closed loop mode. If you get rid of it you'll have problems running when not at WOT, and it may not even run. My '86 just sputters and dies if not at idle or WOT with the sensor disconnected. Depending on the year of j-spec GZE, they moved the O2 sensor onto the B-pipe after the manifold, hence no place to mount the sensor. It's gotta be installed somewhere though.

Krimzen · 01-23-2007, 08:11 PM

yes, I have it somewhere. Do you know the location of the wire comming from the harness? Maybe when I installed the harness I buried the wire by accident. Does it come down from the distributor area or is it under the intake manifold??

I appreciate it.

My car surprisingly runs but it idles erradically; Weird throttle too.

4AGTE · 05-09-2007, 04:54 AM

old thread but the o2 is at the bottom of the header. It is blocked by a plate..

mr2tim · 04-15-2008, 12:18 PM

HEY RED,

FROM PAGE 4-1 OF THE 89MR2 ELECT DIAGRAM BOOK THE OXYGEN SENSOR HAS THE FOLLOWING WIRES:

FROM HARNESS-
BR-SOLID BROWN COLORED WIRE
B-R-BLACK WITH RED STRIPE WIRE

FROM COMPUTER
B-SOLID BLACK WIRE
B-W-BLACK W WHITE STRIPE WIRE

LOOK IN THE AREA OF THE STARTER FOR THE WIRE IF THE 02 HOLE IS ON THE LOWER EXHAUST. (MINE WAS 89)

IF YOUR O2 HOLE IS FURTHER UP ON THE EXHAUST BY THE HEADER LOOK AT THE REAR OF THE ENGINE.

PS SECURE THE WIRE AT INSTALL, IT WILL EAT RUBBER AXLE JOINT COVERS

mr2tim

01-23-2007, 07:18 PM	#1 (permalink)
Krimzen No Skills Join Date: May 2005 Location: Marietta, GA Posts: 61 Thanks: 8 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	jspec 4agze Just wondering if they ever made a 4agze without the O2 sensor. I have the gze version that has no egr system, no port, no wires. I think it might be the same for the o2 but I am not sure. I havent found the wire for the o2 sensor yet.

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01-23-2007, 07:38 PM	#2 (permalink)
CpuZapper RallyRacer Join Date: Mar 2005 Location: Portland, OR Posts: 480 Thanks: 7 Thanked 25 Times in 22 Posts My Google Map iTrader Rating: (1/100% )	You kinda gotta have the O2 sensor. It's what the engine uses to meter fuel in closed loop mode. If you get rid of it you'll have problems running when not at WOT, and it may not even run. My '86 just sputters and dies if not at idle or WOT with the sensor disconnected. Depending on the year of j-spec GZE, they moved the O2 sensor onto the B-pipe after the manifold, hence no place to mount the sensor. It's gotta be installed somewhere though.

01-23-2007, 08:11 PM	#3 (permalink)
Krimzen No Skills Join Date: May 2005 Location: Marietta, GA Posts: 61 Thanks: 8 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	yes, I have it somewhere. Do you know the location of the wire comming from the harness? Maybe when I installed the harness I buried the wire by accident. Does it come down from the distributor area or is it under the intake manifold?? I appreciate it. My car surprisingly runs but it idles erradically; Weird throttle too.

05-09-2007, 04:54 AM	#4 (permalink)
4AGTE Some Skills Join Date: Mar 2007 Posts: 53 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (2/75% )	old thread but the o2 is at the bottom of the header. It is blocked by a plate..

04-15-2008, 12:18 PM	#5 (permalink)
mr2tim SUPERcharZed ToyZ RacZer Join Date: Mar 2008 Location: South Florida Posts: 690 Thanks: 2 Thanked 41 Times in 38 Posts My Google Map iTrader Rating: (2/100% )	HEY RED, FROM PAGE 4-1 OF THE 89MR2 ELECT DIAGRAM BOOK THE OXYGEN SENSOR HAS THE FOLLOWING WIRES: FROM HARNESS- BR-SOLID BROWN COLORED WIRE B-R-BLACK WITH RED STRIPE WIRE FROM COMPUTER B-SOLID BLACK WIRE B-W-BLACK W WHITE STRIPE WIRE LOOK IN THE AREA OF THE STARTER FOR THE WIRE IF THE 02 HOLE IS ON THE LOWER EXHAUST. (MINE WAS 89) IF YOUR O2 HOLE IS FURTHER UP ON THE EXHAUST BY THE HEADER LOOK AT THE REAR OF THE ENGINE. PS SECURE THE WIRE AT INSTALL, IT WILL EAT RUBBER AXLE JOINT COVERS mr2tim