DIY - 1.8L 1ZZ-FE TB Connector Chip Swap - Page 8 - Toyota Yaris Forums

mikenacarato · 04-23-2009, 12:45 PM

i just want to stress a point again. anyone who just did this mod you have to drive it for a good 2 days or so for the ecu to learn the now tb. it will oscillate bad until then.

MGargano · 04-23-2009, 01:01 PM

Quote:

Originally Posted by mikenacarato

i just want to stress a point again. anyone who just did this mod you have to drive it for a good 2 days or so for the ecu to learn the now tb. it will oscillate bad until then.

Oh I was under the impression that the chip swap made the oscillation and CEL go away immediately. Think I should leave it on for a few days?

marcus · 04-23-2009, 01:48 PM

i guess time will tell

jkuchta · 04-23-2009, 02:12 PM

Yes....I would leave it on and see what happens.

mikenacarato · 04-23-2009, 04:23 PM

i did after the chip swap for a day or so. give it some time.

MGargano · 04-23-2009, 06:54 PM

Quote:

Originally Posted by mikenacarato

i did after the chip swap for a day or so. give it some time.

I'm gonna leave the stock one on for a week or so and then start over with the chip swap. Glad to hear I wasn't the only one having this problem.

mikenacarato · 04-23-2009, 08:33 PM

:) mine still cold idles high for a min but it goes down to normal after that

severous01 · 04-23-2009, 09:08 PM

ok.......

here's the deal....again...for you who will listen now

you can stop the oscillation in less than ten minutes.

after the swap, pull the plug on the battery, drain caps by hitting brakes and turning on lights

plug in batt

start car AND LET IDLE FOR 10 MINUTES

you have to re-learn the iac sensor to the new throttle body...it is oscilating to learn the position of the iac motor....unless you have a vac leak somewhere.

MGargano · 04-23-2009, 09:35 PM

Quote:

Originally Posted by severous01

ok.......

here's the deal....again...for you who will listen now

you can stop the oscillation in less than ten minutes.

after the swap, pull the plug on the battery, drain caps by hitting brakes and turning on lights

plug in batt

start car AND LET IDLE FOR 10 MINUTES

you have to re-learn the iac sensor to the new throttle body...it is oscilating to learn the position of the iac motor....unless you have a vac leak somewhere.

Yeah I did that... didn't help at all. I disconnected and drained the battery before I even removed the TB.

bxrich · 04-24-2009, 08:56 AM

quick ? guys what's the diameter on the 1zz tb is it 2" & half or 3"

yarstar · 04-24-2009, 08:59 AM

Mine's on the car, so I can't really measure it right now.

Do a search. It's on here. I think in the Performance Mod section. There's a picture of both TBs and the exact measurement of each.

bxrich · 04-24-2009, 09:35 AM

Quote:

Originally Posted by yarstar

Mine's on the car, so I can't really measure it right now.

Do a search. It's on here. I think in the Performance Mod section. There's a picture of both TBs and the exact measurement of each.

will do thanks

eii · 05-02-2009, 05:43 PM

Quote:

Originally Posted by bxrich

quick ? guys what's the diameter on the 1zz tb is it 2" & half or 3"

stock yaris 1nz tb is 2"
1zz tb is 2.5"

t0m4s · 05-03-2009, 02:50 AM

Quote:

Originally Posted by eii

stock yaris 1nz tb is 2"
1zz tb is 2.5"

i think 1nz tb is 2.25"
no?

eii · 05-04-2009, 06:39 PM

Quote:

Originally Posted by t0m4s

i think 1nz tb is 2.25"
no?

Pic of my 1nz tb now a paper weight on my desk <3

marcus · 04-24-2009, 01:43 PM

been 2 days anyone got rid of the issue..

MGargano · 04-24-2009, 02:13 PM

Quote:

Originally Posted by marcus

been 2 days anyone got rid of the issue..

Reinstalled the 1ZZ w/ chip swap this morning with gasket sealer and coolant bypass but didn't disconnect the battery so we'll see if anything changes later today.

jkuchta · 04-24-2009, 01:52 PM

I never had the issue.

I think you have an air leak somewhere in the system. Best bet is to pull the TB, and reapply the sealer and let it sit overnight to set up.

04-24-2009, 08:59 AM	#11
yarstar View User's Garage Drives: 2008 Absolute Red HB Join Date: Oct 2008 Location: Georgia Posts: 264	Mine's on the car, so I can't really measure it right now. Do a search. It's on here. I think in the Performance Mod section. There's a picture of both TBs and the exact measurement of each. __________________ AEM CAI, NST Pulleys/SSK, WR 4-2-1 Header, TRD axelback, R1 Concept Rotors, TRD Sway Bar, Nitto Rear Strut Bar, Cusco GT-Zero Coilovers, 1ZZ-FE 1.8L TB

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04-23-2009, 12:45 PM	#1
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	i just want to stress a point again. anyone who just did this mod you have to drive it for a good 2 days or so for the ecu to learn the now tb. it will oscillate bad until then.

04-23-2009, 01:48 PM	#3
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	i guess time will tell

04-23-2009, 02:12 PM	#4
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	Yes....I would leave it on and see what happens.

04-23-2009, 04:23 PM	#5
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	i did after the chip swap for a day or so. give it some time.

04-23-2009, 08:33 PM	#7
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	:) mine still cold idles high for a min but it goes down to normal after that

04-23-2009, 09:08 PM	#8
severous01 Drives: 2008 yaris, stripped, red Join Date: Jan 2009 Location: SE Texas Posts: 977	ok....... here's the deal....again...for you who will listen now you can stop the oscillation in less than ten minutes. after the swap, pull the plug on the battery, drain caps by hitting brakes and turning on lights plug in batt start car AND LET IDLE FOR 10 MINUTES you have to re-learn the iac sensor to the new throttle body...it is oscilating to learn the position of the iac motor....unless you have a vac leak somewhere.

04-24-2009, 08:56 AM	#10
bxrich bx in the house Drives: toyota yaris sedan Join Date: Oct 2008 Location: N.Y. Posts: 113	quick ? guys what's the diameter on the 1zz tb is it 2" & half or 3"

04-24-2009, 01:43 PM	#16
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	been 2 days anyone got rid of the issue..

04-24-2009, 01:52 PM	#18
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	I never had the issue. I think you have an air leak somewhere in the system. Best bet is to pull the TB, and reapply the sealer and let it sit overnight to set up.