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Help!! Celica is runnig rich at idle - 6G Celicas Forums

Topic #95981 51 posts Started by doory100
doory100
#31
>
QUOTE (Bitter @ Aug 29, 2015 - 7:51 PM) *
>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?
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Bitter
#32
Maybe, what's the MAP sensor reading at idle and with key on engine off on the AFC?
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
doory100
#33
drove the car back to the shop today. I needed my truck. So I will check that out on Monday after work.
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Smaay
#34
wait a minute. what engine are you using and what TB are you using?
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
doory100
#35
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
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Bitter
#36
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.
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
Bitter
#38
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.
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
doory100
#39
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..
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
doory100
#40
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.
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Bitter
#41
Uh you need the MAP connected to manifold vaccum, it has no idea how much air is entering without it! That's your problem! You can put it on any port that's connected directly to the manifold or T it off a hose with manifold vacuum in the mean time.


I don't mean to sound like an asshole, but it sounds like you have barely any idea what you're doing here.
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
doory100
#42
I have an idea. I just rebuilt a engine by myself and it started first try. I may not know what every thing is exactly but I'm learning. Thanks for your help. I took automotive in college for a year and got straight A's. I just desided to go a differe rought.
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
doory100
#43
so after putting the map vacume line into the TB, It runs great afr is at 14.7 and drives nice. im having a issue at 4500 rpm though. It seams to not gain any speed at that rpm and the afr reads 10. When do you start to trim away fuel or should I be adding more as the rpm climb?



what should I be setting the Throttle points at, and what does this do exactly?
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Bitter
#44
I'm not familiar with the Neo, I had a SAFC2 that was a dud and had a dead output so I could never use it to control anything. If it's reading 10:1 at 4500 rpm that would be too rich, you wouldn't try to add fuel to that. If the port you used for the MAP sensor is too close to the throttle plate it could be getting a poor reading, it should be reading from the manifold.
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
doory100
#45
I used a T fitting like you said at the end of the TB. But I am planning on doing it up right. I still need to put it up on a hoist and check all the connections again to make sure there are no vacuume leaks.
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Bitter
#46
Ok, is the MAP sensor reading steady or does it do something weird at 4500 rpm? As throttle angle increases MAP should decrease, at full throttle it should be only a slight vacuum, nearly the same as atmospheric pressure. At steady throttle it should be fairly steady. When you release throttle and engine brake it should have very high vacuum and have steady vacuum around 15-20 inches at idle.
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
doory100
#47
Seems to be fine. Drives like it did before.
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
Bitter
#48
You had the dead spot before too?
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
doory100
#49
No I'm not sure if it's still there I think I need to f with the safc some more. And I need to make sure everything is secure it might just be a vacuume leak. Thanks for your help I'll keep updating
DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
doory100
#50
blew the rad!! I hope I didn't damage the engine. What a way to start the weekend.

DOORY MCFLYhttp://www.6gc.net/forums/uploads/av-50000...time=1408581712
doory100
#51
Are there any other Toyota's that share the same radiator, It doesn't look like it.
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