Help!! Celica is runnig rich at idle, Celica is up and running today. Options

[doory100]

The settings are right and I hooked it up myself. When I turn the corrections off the rpm go from 2000 to 1300 rpm. So it is doing something. I don't know what the fuel trim setting should be set at pre 1000 rpm. Their just stock injectors and I cleaned them before they went in.

This post has been edited by doory100: Aug 29, 2015 - 1:09 PM

[Bitter]

It SHOULD be doing nothing at idle, AFC's are made for ONLY open loop full throttle kind of operation, not to control fuel at idle and low throttle. The computer will adjust fuel trims accordingly and wipe out whatever the AFC is trying to do in closed loop. If your settings are affecting idle then something is set wrong, you need to get back to basics.

[doory100]

So their is two connectors on the Celica TB and the 1mz Camry TB only has the one conector. What's the white block under the Celica TB that The other connector plugs into?
On the other hand The coolant line on the back of the 1mz TB is kinked and this could be a reason that it's ideling roughly, plus their is most likely a vacuum leak somewhere.

[Bitter]

Post a photo of the part in question.

[doory100]

[Bitter]

That's the idle speed motor, it controls the idle speed by bypassing air past the throttle plate.

[doory100]

So it would be okay if it wasn't plugged in because the 1mz throttle body I have does not have a plug for the coolant sensor. I'm thinking of going and getting the TB with the idle speed motor on it. What do you think?

This post has been edited by doory100: Aug 29, 2015 - 3:55 PM

[Bitter]

Can you bolt on an original 5S throttle body and plug everything in and see how it runs? You need an idle speed motor, throttle position, and coolant temp sensor for the car to run and idle correctly.

[doory100]

No, not with out removing the new intake manifold and installing the old one. I saw one last time i was at the junk yard with the coolant motor on it. So I'm going tomorrow morning to get it and have another look at the vacuum lines on the 5s motor that is at the junk yard too.

[Bitter]

It sounds like the throttle body is the problem then if it doesn't have an idle speed motor on it.

[doory100]

It sounds like the throttle body is the problem then if it doesn't have an idle speed motor on it.

would that cause it to run rich? maybe?

[Bitter]

Maybe, what's the MAP sensor reading at idle and with key on engine off on the AFC?

[doory100]

drove the car back to the shop today. I needed my truck. So I will check that out on Monday after work.

[Smaay]

wait a minute. what engine are you using and what TB are you using?

[doory100]

5sfe with a custom intake manifold and a 1mz v6 Camry TB.
Also where is the pressure sensor located. Does it plug into the intake pipe?


This post has been edited by doory100: Aug 30, 2015 - 10:30 AM

[Bitter]

The MAP sensor is in the picture, top left on the fire wall with the blue label. It needs to be connected to MANIFOLD vacuum.

[doory100]

Here is the new TB with the idle speed motor on it.. What is the 3rd line in the middle for? (the one with tho hose still attached)
[URL=http://s1381.photobucket.com/user/Rory_McNabb/media/Mobile%20Uploads/2015-08/20150830_122553_zpsbr1rsluj.jpg.html]

This post has been edited by doory100: Aug 30, 2015 - 2:16 PM

[Bitter]

That's the idle speed control motor and valve, not any kind of coolant motor. The middle hose looks like an air inlet for the IAC valve, which needs to be filtered air. Originally it probably connected to the air box or the air intake tube, but you can put a tiny cone filter on it for now or just leave it exposed for testing purposes as long as you don't drive with it open ended.

[doory100]

I am going to install the new TB today. I'm thinking that because of the idle speed sensor not being pluged in, the engine thinks that it's running lean and adding fuel to complicate. That's why it's running rich and getting a lean code.. Just my guess..

[doory100]

So installed the new TB and its still running rich. the idle speed sensor seemed to knock it down to 900 rpm but unless I trim the fuel all the way down on the lo throttle setting on the safc it idles rough with up and down revving and the engine shakes at high rev. And the map sensor hose was not plugged in. I have to make a inlet for that next. I temperately plugged it in to that space ship dealy on top of the engine, but Im guessing that won't do it. Also maybe bypass the safc and see how it runs.