DIY: 1zz-fe throttle body swap

hotweelz4me · 05-03-2009, 08:32 PM

nice write up, off to the junk yard as soon as the rain lets up!

859Toaster · 05-03-2009, 08:49 PM

Quote:

Originally Posted by gothbox

what is the cut off year on that?
and how far back can we go and all the sensors still match up etc.

1998-2002 COME ON NEWB! Its in the original post!

And if the sensor's throw codes, you just swap sensors from the stock TB

crxgames · 05-03-2009, 09:03 PM

So, I'm over 50 miles with no CEL now. I think it threw the code as it was getting a lot more air after the ram air intake was on. I started it up this morning and it was off and I have completed over the 50 miles cycle today with no problems at all. I think these TB's may be right on the border of throwing errors with our ECU. I'll keep everyone updated if it comes back up again.

My cousin has a code reader too, so I'll swing by his house sometime and have him dump the codes if it comes back up.

PCH · 05-03-2009, 10:56 PM

So the TPS and the Idle Control on Corolla TB- are they same part numbers as on xB, if you checked?

crxgames · 05-03-2009, 11:03 PM

No they are different, at least part-number wise and shape. Internally, who knows?

1nz TB:

1zz TB:

PCH · 05-03-2009, 11:10 PM

Cool, can't wait for mine to arrive. I'm probably gonna weld up the area around idle air bypass and try to find longer studs.
Once i hook everything up i'll see on my Scangauge what the difference in TPS reading it makes, if any.

859Toaster · 05-03-2009, 11:28 PM

No disrespect to you Cody, but I think we all know, PCH is gonna one up this. He always finds a way to make everything mega clean.

nnnickkk · 05-03-2009, 11:31 PM

wow nice cody. im calling my dismantler tomorrow to see if i can get a TB like this.

oh and EZ if you make the gasket, PM me ill take one.

PCH · 05-03-2009, 11:41 PM

We'll see, i know at least one boss will have to be grounded off cuz i have an auto and the dipstick will be in the way.
Cody, i think if the larger TB is borderline throwing Check engine light, you may need the SRI or CAI that has PCV inlet hose after the MAF, not before- like most of them.

enuf2spare35 · 05-03-2009, 11:59 PM

Nice one Cody, I guess I can throw all the other info you gave me away now LOL. When do you wanna start on Toy Bx. We'll put on the Weapon*R intake at the same time LOL.

crxgames · 05-04-2009, 12:01 AM

Get the parts in and let me know. =p I should have some time after the 14th.

caryseo · 05-04-2009, 12:39 AM

Great tips mate.. I will give it a try DIY...

SAKURA · 05-04-2009, 02:12 AM

great stuff cody. ill def. keep eye on this and keep us up to date on any upgrades. btw, rep. points comin yer way!

adam_a · 05-04-2009, 12:28 PM

i need a hook up on this..... junk yard wants to charge me ALOT more than the 40 that cody said he found them for... anyone have acess to one at a junk yard and wanna make a lil extra cash and just help a guuy out???

crxgames · 05-04-2009, 01:22 PM

Tried eBay?

nnnickkk · 05-04-2009, 03:17 PM

Quote:

Originally Posted by crxgames

Tried eBay?

i just got one off ebay for 43 shipped

rton20s · 05-04-2009, 03:41 PM

I was thinking along the same lines as PCH. I would think the studs on the intake manifold could be removed. Just take a look at the OBX throttle body spacer. That comes with replacement allen head bolts. So you can probably just remove the stock studs and use bolts in place of the studs. (Or you could cut down your own studs from allthread if you were so inclined.)

Anyone have a good picture of the factor manifold so we can see how the stock studs are installed? Threaded vs. pressed.

crxgames · 05-04-2009, 04:13 PM

They would be easy to replace. The studs have a square head on them and just slide onto the manifold from the side. I just chose to keep mine stock and modify the TB.

rton20s · 05-04-2009, 04:29 PM

Sounds like new bolts it is then. Or at least one. Probably much easier for most people than dremeling away at the 1ZZ throttle body.

Guess it is time to pick up a throttle body and add it to the pile of parts I have to install. Especially now the lingering CEL I had seems to be taken car of.

hotweelz4me · 05-04-2009, 04:49 PM

You can buy the 1ZZ TB gasket brand new for under $5; this may make a cleaner install than trying to cut out your own. It could also act as a nice template for EZ to make the waterjet sandwich plates.

I checked the local junkyard's (Pull-a-part) online inventory and they do not have any 98-02 Corollas. They have a cool feature that allows you to register specific vehicles and receive notification if and when they receive one.