DIY - 1.8L 1ZZ-FE TB Connector Chip Swap - Page 12 - Toyota Yaris Forums

Gideon · 05-11-2009, 12:56 AM

Yeah it was pretty jerky initially.

It still is really jerky if the engine is cold, but once it warms up it ceases.

PHXDEMON · 05-11-2009, 02:29 AM

Quote:

Originally Posted by Gideon

Yeah it was pretty jerky initially.

It still is really jerky if the engine is cold, but once it warms up it ceases.

Mine keeps getting worse and worse. Jerky as fuck even when the sngine is warm and the oscillation is progressively getting worse.

PHXDEMON · 05-11-2009, 04:53 PM

okay so the idle screw was all the way in and I backed it up as far as I could. Let the car idle for about 10 minutes and slowly the idle smoothed out completely

While driving I am still getting some jerkyness and moderate oscillation (1-2k) at stop lights but nowhere near as bad as it was. It seems the ECU is actually trying to learn the new throttle body now instead of just being a whore about it. Hopefully it will smoothe itself out some more as I drive it more.

marcus · 05-11-2009, 05:59 PM

hope that fixes ur issue..

PHXDEMON · 05-11-2009, 06:06 PM

Quote:

Originally Posted by marcus

hope that fixes ur issue..

Oh believe me so do I

Hell I can even live with how it is now it's just that pegging from 1-4k nasty oscillation was horrible. The car was almost undrivable

eii · 05-11-2009, 07:49 PM

Quote:

Originally Posted by PHXDEMON

Correct others have plugged them I just left them as is. Just go down to a lowes/home depot/etc and get a coupler barb for 3/8 inch ID vinyl tubing and you are food to roll. Stock clamps work and everything just need the barb.

FYI, I'm always food to roll..always.

PHXDEMON · 05-11-2009, 08:01 PM

Quote:

Originally Posted by eii

FYI, I'm always food to roll..always.

Did you do the bypass?

PHXDEMON · 05-12-2009, 12:36 AM

Yay my motor is finally running half decent and I got a CEL

AlexNet0 · 05-12-2009, 07:06 AM

Quote:

Originally Posted by PHXDEMON

Yay my motor is finally running half decent and I got a CEL

that must mean its working!

marcus · 05-12-2009, 11:17 AM

Quote:

Originally Posted by PHXDEMON

Yay my motor is finally running half decent and I got a CEL

nice.. so ur saying it idles the same as stock and no oscillations.. what about start up how high does it warm up to..

no wwe jsut need to kill the cel ..

jkuchta · 05-12-2009, 10:00 PM

What code is the CEL associated with?

Also, for the people that are still having problems with the swap:

Are you guys using the stock Yaris gasket (the black O-ring with the "tail" and the partial mesh screen) with the 1ZZ TB?

If not...you should use at least the "tail" portion. The slot that the "tail" fits in on the intake manifold offers a totally open channel through which air will get in and cause idle speed "hunting" and CEL's. The channel is large enough to suck in any partially set gasket maker and give you problems such as rough idle and CEL's.

When I did the install I cut off the "tail" from the gasket and installed it in the channel in the intake manifold with gasket maker. Once set, the "tail" creates a nice solid plug for that channel, and I haven't had a single CEL since I made the chip swap....not ONE!

marcus · 05-13-2009, 11:55 AM

wow no oscillation and no cel ...

RagnaCaT · 05-13-2009, 09:15 PM

After 12 pages I feel I should do this....

jkuchta · 05-14-2009, 01:34 AM

Quote:

Originally Posted by marcus

wow no oscillation and no cel ...

Yep...read post #78 in this thread!

PHXDEMON · 05-16-2009, 05:03 PM

Well the CEL finally disappeared and it ran great for about a mile. and then this

Fuck this throttle body. Put the stocker back on and it is running great.

eii · 05-16-2009, 06:20 PM

Whaaaaaaaaaaaaaaaaaaat? Please explain what happened. I'm scared, I'm scared for my life now.

jkuchta · 05-16-2009, 06:35 PM

So what went wrong? Do you know what the CEL code was?

Please tell me step-by-step how you installed the 1zz TB so we can figure out what went wrong. I've been running mine without fault for a few months now...there's got to be something simple that can be fixed and will clear up the whole problem.

And eii, if you want to go for a ride in a yaris with the 1zz tb install that was done correctly, PM me.

PHXDEMON · 05-18-2009, 01:29 AM

Quote:

Originally Posted by jkuchta

So what went wrong? Do you know what the CEL code was?

Please tell me step-by-step how you installed the 1zz TB so we can figure out what went wrong. I've been running mine without fault for a few months now...there's got to be something simple that can be fixed and will clear up the whole problem.

And eii, if you want to go for a ride in a yaris with the 1zz tb install that was done correctly, PM me.

CEL was gone. Car completely died and wouldn't even idle. Start it up and it woul ddie instantly. I used the original gasket plus gasket maker, I did the coolant bypass, I did the chip swap. I did everything it just didn't work out for me

05-13-2009, 09:15 PM	#211
RagnaCaT HacKers WanTed! View User's Garage Drives: Yaris S HB & Yaris S SD Join Date: Aug 2007 Location: Villalba, Puerto Rico Posts: 435	After 12 pages I feel I should do this.... __________________ *R-CaT* Project Yar 2ZR

05-16-2009, 06:20 PM	#214
eii Rides canyon walls Drives: 1988 RX7 FC 10th AE Join Date: Jun 2007 Location: Long Beach, CA Posts: 503	Whaaaaaaaaaaaaaaaaaaat? Please explain what happened. I'm scared, I'm scared for my life now. __________________ OEM Style Wing Spoiler \| TRD Axle-Back Exhaust \| Megan Lowering Springs (1.5 f/r) \| Simota Carbon Charger Intake \| Python 871XP Alarm System \| Aluminum Sports Pedal \| 17x7 +42mm Enkei J10 Black w/ Silver Lip \| 205/40 Falken Ziex-912 \| NST Lite Crank Pulley Red \| 1ZZ-FE Throttle Body \| AMK Racing Header

05-16-2009, 06:35 PM	#215
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	So what went wrong? Do you know what the CEL code was? Please tell me step-by-step how you installed the 1zz TB so we can figure out what went wrong. I've been running mine without fault for a few months now...there's got to be something simple that can be fixed and will clear up the whole problem. And eii, if you want to go for a ride in a yaris with the 1zz tb install that was done correctly, PM me. Last edited by jkuchta; 05-16-2009 at 06:45 PM.

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05-11-2009, 12:56 AM	#199
Gideon ★weeaboo★ View User's Garage Drives: 2008 Bayou LB Join Date: Oct 2008 Location: Sunnyvale, CA Posts: 661	Yeah it was pretty jerky initially. It still is really jerky if the engine is cold, but once it warms up it ceases.

05-11-2009, 04:53 PM	#201
PHXDEMON View User's Garage Drives: 2007 Red Liftback Join Date: Oct 2008 Location: Phoenix, AZ Posts: 885	okay so the idle screw was all the way in and I backed it up as far as I could. Let the car idle for about 10 minutes and slowly the idle smoothed out completely While driving I am still getting some jerkyness and moderate oscillation (1-2k) at stop lights but nowhere near as bad as it was. It seems the ECU is actually trying to learn the new throttle body now instead of just being a whore about it. Hopefully it will smoothe itself out some more as I drive it more.

05-11-2009, 05:59 PM	#202
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	hope that fixes ur issue..

05-12-2009, 12:36 AM	#206
PHXDEMON View User's Garage Drives: 2007 Red Liftback Join Date: Oct 2008 Location: Phoenix, AZ Posts: 885	Yay my motor is finally running half decent and I got a CEL

05-12-2009, 10:00 PM	#209
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	What code is the CEL associated with? Also, for the people that are still having problems with the swap: Are you guys using the stock Yaris gasket (the black O-ring with the "tail" and the partial mesh screen) with the 1ZZ TB? If not...you should use at least the "tail" portion. The slot that the "tail" fits in on the intake manifold offers a totally open channel through which air will get in and cause idle speed "hunting" and CEL's. The channel is large enough to suck in any partially set gasket maker and give you problems such as rough idle and CEL's. When I did the install I cut off the "tail" from the gasket and installed it in the channel in the intake manifold with gasket maker. Once set, the "tail" creates a nice solid plug for that channel, and I haven't had a single CEL since I made the chip swap....not ONE!

05-13-2009, 11:55 AM	#210
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	wow no oscillation and no cel ...

05-16-2009, 05:03 PM	#213
PHXDEMON View User's Garage Drives: 2007 Red Liftback Join Date: Oct 2008 Location: Phoenix, AZ Posts: 885	Well the CEL finally disappeared and it ran great for about a mile. and then this Fuck this throttle body. Put the stocker back on and it is running great.