DIY - 1.8L 1ZZ-FE TB Connector Chip Swap - Page 13 - Toyota Yaris Forums

Yaris T-Sport. · 05-18-2009, 01:35 AM

Quote:

Originally Posted by PHXDEMON

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

That could be pretty much the 1ZZ T/B itself being the problem, try another different 1ZZ T/B or try the 2AZ-FE 2.4L T/B.

remember! failing is the beginning of success, it wasn't easy for me either

jkuchta · 05-18-2009, 01:35 AM

Bummer...

Do you know what the code for the CEL you were getting was? It may provide some clues as to what caused your problem.

bieniman · 05-20-2009, 08:35 PM

Guys,
I've been following this mod for a while now,

If I'm correct the newer yaris models have electronically controlled TB. Well, I looked under my hood and see sort of like a cable running from the pedal to the TB, I can rev my engine by turning this swivel.

bieniman · 05-20-2009, 08:38 PM

O yeah forgot to ask.

Can I do this mod also to my , Vitz Rs 2001?????

enviri · 05-20-2009, 09:00 PM

dude! i was about to put it on! now im gonna have second thoughts or get garm's! jeez...i think there HAS to be something we're missing...a hidden variable thats affecting some of us...

Quote:

Originally Posted by PHXDEMON

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.

AlexNet0 · 05-20-2009, 09:12 PM

Quote:

Originally Posted by bieniman

Guys,
I've been following this mod for a while now,

If I'm correct the newer yaris models have electronically controlled TB. Well, I looked under my hood and see sort of like a cable running from the pedal to the TB, I can rev my engine by turning this swivel.

Yes, this mod only applies to the Drive by wire system that is in the ( i believe) '05 and newer

AlexNet0 · 05-20-2009, 09:13 PM

Quote:

Originally Posted by PHXDEMON

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

doesnt sound like the TB unless a wire snapped somewhere.

PHXDEMON · 05-20-2009, 09:31 PM

Quote:

Originally Posted by AlexNet0

doesnt sound like the TB unless a wire snapped somewhere.

Stocker works flawless though so it isn't a wiring issue.

PHXDEMON · 05-20-2009, 09:33 PM

Quote:

Originally Posted by bieniman

Guys,
I've been following this mod for a while now,

If I'm correct the newer yaris models have electronically controlled TB. Well, I looked under my hood and see sort of like a cable running from the pedal to the TB, I can rev my engine by turning this swivel.

I'm not 100% positive on this but the scion xa/xb owners have done a swap with an older 1zz throttle body which is drive by cable like yours. check the forums @ scionlife.com you should be able to dig up more info.

MGargano · 05-21-2009, 12:53 AM

The chip swap was working fine for me... no CEL or oscillation... until I had to disconnect the battery to swap the steering wheel. Once I reconnected, oscillation & CELs galore.

jkuchta · 05-21-2009, 03:10 AM

What codes are showing up?

Just saying you have a CEL is kind of worthless unless we know what the code is. It could be just a case of needing to adjust the idle set screw, or a number of other things.

MGargano · 05-21-2009, 03:13 AM

Quote:

Originally Posted by jkuchta

What codes are showing up?

Just saying you have a CEL is kind of worthless unless we know what the code is. It could be just a case of needing to adjust the idle set screw, or a number of other things.

P0505- Idle Malfunction

jkuchta · 05-21-2009, 03:46 AM

Have you adjusted the idle screw? If you've turned the screw out too far you could get this code...try turning the screw in one or two turns (with the car off). This should fix the problem.

If you haven't adjusted the idle set screw, turn it counter-clockwise 1.5 turns (with the engine off), and see what happens.

MGargano · 05-21-2009, 09:39 AM

Quote:

Originally Posted by jkuchta

Have you adjusted the idle screw? If you've turned the screw out too far you could get this code...try turning the screw in one or two turns (with the car off). This should fix the problem.

If you haven't adjusted the idle set screw, turn it counter-clockwise 1.5 turns (with the engine off), and see what happens.

I haven't touched the idle screw at all. The thing was working perfectly for over a month, right up until I disconnected the battery. I'm not going through this every time I disconnect the battery... plus, even when it's working perfectly, the high idle is now quite loud with the exhaust I have. I'm 99% I'm switching back to the stocker today.

Yoda · 05-21-2009, 09:41 AM

any one has a DYI on how to install the TB? I am looking through tha manuall and drawing a blank. Do i need anything special?

jkuchta · 05-21-2009, 01:26 PM

Quote:

Originally Posted by MGargano

I haven't touched the idle screw at all. The thing was working perfectly for over a month, right up until I disconnected the battery. I'm not going through this every time I disconnect the battery... plus, even when it's working perfectly, the high idle is now quite loud with the exhaust I have. I'm 99% I'm switching back to the stocker today.

If you turn the idle set screw out about a turn and a half, all of your problems will go away.

When you leave the screw is the "corolla" position, the yaris ECU adjusts the idle fuel to get a stable idle. This takes time, as the ECU needs to make some pretty big changes. When you adjust the idle set screw to the correct position, the ECU doesn't have to work nearly as hard to get a normal idle, so the ECU doesn't freak out.

The idle rpm fluctuations are a result of the ECU hunting for the right fueling to maintain a steady 600-700 rpm idle in the face of way too much air going through an unadjusted corolla TB.

The P0505 code is the ECU saying..."WTF!!...Why can't I idle at the fuel trims I'm programmed with...something must be wrong!!"

AlexNet0 · 05-21-2009, 02:02 PM

Quote:

Originally Posted by Yoda

any one has a DYI on how to install the TB? I am looking through tha manuall and drawing a blank. Do i need anything special?

If you search, you will find it. there have been like 3

Yoda · 05-21-2009, 02:24 PM

Quote:

Originally Posted by AlexNet0

If you search, you will find it. there have been like 3

thx it wasnt too hard so i didnt need the diy. Didnt do the chip swap gonna see what other means there are to eliminate the cel if i get any.

05-21-2009, 03:46 AM	#229
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	Have you adjusted the idle screw? If you've turned the screw out too far you could get this code...try turning the screw in one or two turns (with the car off). This should fix the problem. If you haven't adjusted the idle set screw, turn it counter-clockwise 1.5 turns (with the engine off), and see what happens. Last edited by jkuchta; 05-21-2009 at 04:11 AM.

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05-18-2009, 01:35 AM	#218
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	Bummer... Do you know what the code for the CEL you were getting was? It may provide some clues as to what caused your problem.

05-20-2009, 08:35 PM	#219
bieniman View User's Garage Drives: vitz rs 1500 2001 Join Date: Dec 2008 Location: Suriname South America Posts: 28	Guys, I've been following this mod for a while now, If I'm correct the newer yaris models have electronically controlled TB. Well, I looked under my hood and see sort of like a cable running from the pedal to the TB, I can rev my engine by turning this swivel.

05-20-2009, 08:38 PM	#220
bieniman View User's Garage Drives: vitz rs 1500 2001 Join Date: Dec 2008 Location: Suriname South America Posts: 28	O yeah forgot to ask. Can I do this mod also to my , Vitz Rs 2001?????

05-21-2009, 12:53 AM	#226
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	The chip swap was working fine for me... no CEL or oscillation... until I had to disconnect the battery to swap the steering wheel. Once I reconnected, oscillation & CELs galore.

05-21-2009, 03:10 AM	#227
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	What codes are showing up? Just saying you have a CEL is kind of worthless unless we know what the code is. It could be just a case of needing to adjust the idle set screw, or a number of other things.

05-21-2009, 09:41 AM	#231
Yoda Drives: 2008 Black Sedan Join Date: Oct 2008 Location: FL Posts: 966	any one has a DYI on how to install the TB? I am looking through tha manuall and drawing a blank. Do i need anything special?