Fuel Cut disable/delete??? ST185

Write ups and tutorials for maintenance and modifications.

Re: Fuel Cut disable/delete??? ST185

Postby underscore » Mon May 13, 2019 2:58 pm

Selsvik wrote:Not that i know of... Will check later! Where on the intake would this be a problem? Before or after the turbo? Because the hose before the turbo has a crack in it.
And i think i got the exhaust tight when i changed the downpipe, or else i would have heard it. The lambda sensor has been changed as well, so that should be ok.


Everything after the AFM needs to be sealed (and really everything after the air filter so you're not sucking dirt and debris into the engine) or you'll have issues like this.
Members don't see the above ad. Register now - it's free!
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
underscore
GTFour God
 
Posts: 4222
Images: 0
Joined: Mon Apr 09, 2007 11:29 pm
Location: Kelowna, BC

Re: Fuel Cut disable/delete??? ST185

Postby Selsvik » Mon May 13, 2019 3:58 pm

I found out that there was a hose that had came off. So now that i attached it, it runs perfect on idle. (ca14,7AFR)
But it still dont like boost over 0,7 / 16 in AFR
Toyota Celica ST185 AllTrac
Selsvik
Club Member
 
Posts: 33
Joined: Sun Oct 28, 2018 8:02 pm

Re: Fuel Cut disable/delete??? ST185

Postby underscore » Mon May 13, 2019 4:45 pm

Reset the ECU (pull the EFI fuse or disconnect the battery for a couple minutes) and see how it does, it'll probably have to relearn now that things are correct.
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
underscore
GTFour God
 
Posts: 4222
Images: 0
Joined: Mon Apr 09, 2007 11:29 pm
Location: Kelowna, BC

Re: Fuel Cut disable/delete??? ST185

Postby alltrac801 » Mon May 13, 2019 5:40 pm

I would also replace the cracked hose you have too.
1991 Toyota Celica All-Trac (239,000 miles)
alltrac801
Club Member
 
Posts: 142
Images: 0
Joined: Thu Mar 30, 2017 5:51 pm
Location: Layton, Utah

1991 Toyota Celica

Re: Fuel Cut disable/delete??? ST185

Postby Selsvik » Mon May 13, 2019 6:13 pm

Ok, thanks! Will update when i test this! And i will also get new intake hoses (Y)
Toyota Celica ST185 AllTrac
Selsvik
Club Member
 
Posts: 33
Joined: Sun Oct 28, 2018 8:02 pm

Re: Fuel Cut disable/delete??? ST185

Postby alltrac801 » Mon May 13, 2019 6:17 pm

How many miles do you have on your car?
1991 Toyota Celica All-Trac (239,000 miles)
alltrac801
Club Member
 
Posts: 142
Images: 0
Joined: Thu Mar 30, 2017 5:51 pm
Location: Layton, Utah

1991 Toyota Celica

Re: Fuel Cut disable/delete??? ST185

Postby Selsvik » Mon May 13, 2019 7:58 pm

Its now on 137 000km. Oil change every 5000km, with filter every 10 000km. So the engine should be very healthy!
I am the third owner of this car :)

Btw, i was Just out testing after resetting the ecu.
It is much better!! The AFR is still a little high thow. 10 ish on third gear, and down to 9 on fourth gear.
I will purchase some silicone Intake hoses, and test more when i have that. :)
Does it make any difference if it's running on 95octane or 98octane?
Toyota Celica ST185 AllTrac
Selsvik
Club Member
 
Posts: 33
Joined: Sun Oct 28, 2018 8:02 pm

Re: Fuel Cut disable/delete??? ST185

Postby FC Zach » Tue May 14, 2019 3:10 am

What oil are you using?
1992 Toyota Celica AllTrac
1993 Yamaha GTS1000
1987 Mazda RX7 Sport
1979 Yamaha G1A, rotary powered with Sachs KM24
User avatar
FC Zach
Established Member
 
Posts: 1155
Images: 9
Joined: Mon May 20, 2013 7:43 am
Location: Eagleville, TN

1992 Toyota Celica

Re: Fuel Cut disable/delete??? ST185

Postby alltrac801 » Tue May 14, 2019 5:15 pm

Selsvik wrote:Its now on 137 000km. Oil change every 5000km, with filter every 10 000km. So the engine should be very healthy!
I am the third owner of this car :)

Sounds like you have a damn nice car then! My car has 239K miles so every time I would replace a hose or anything I would find another cracked or something so I just replaced everything hose related so I didn't have to worry about it.

Btw, i was Just out testing after resetting the ecu.
It is much better!! The AFR is still a little high thow. 10 ish on third gear, and down to 9 on fourth gear.
I will purchase some silicone Intake hoses, and test more when i have that. :)
Does it make any difference if it's running on 95octane or 98octane?


I have been running 88 octane non-ethanol with Lucas octane boost and I get decent gas mileage and the car seems so run good enough. In Utah we are a higher elevation so 91 is our premium but I cant find 91 non-ethanol.
1991 Toyota Celica All-Trac (239,000 miles)
alltrac801
Club Member
 
Posts: 142
Images: 0
Joined: Thu Mar 30, 2017 5:51 pm
Location: Layton, Utah

1991 Toyota Celica

Re: Fuel Cut disable/delete??? ST185

Postby Selsvik » Tue May 14, 2019 6:17 pm

I live in Norway, here we have 95octane or 98octane(premium)
I dotn know what Oil i use, since i had in in a Toyota workshop last Oil and filter change
Toyota Celica ST185 AllTrac
Selsvik
Club Member
 
Posts: 33
Joined: Sun Oct 28, 2018 8:02 pm

Re: Fuel Cut disable/delete??? ST185

Postby sefiroxx » Tue May 14, 2019 7:32 pm

(NOTE: European octane rating is different than US. 98 Europe is roughly 91-92 US. 95 would be similar to US 89)
User avatar
sefiroxx
Club Member
 
Posts: 34
Joined: Thu Jul 21, 2016 5:43 pm

Re: Fuel Cut disable/delete??? ST185

Postby Selsvik » Tue Jun 04, 2019 10:35 pm

i have now fixed the intake hose, replaced it with silicone hose. pretty sure everything is tight now.
But the problem is still there... it still doesn't like boost over 0,7bar ish.
not sure what to do next... have other peolpe experienced this?
Toyota Celica ST185 AllTrac
Selsvik
Club Member
 
Posts: 33
Joined: Sun Oct 28, 2018 8:02 pm

Re: Fuel Cut disable/delete??? ST185

Postby underscore » Tue Jun 04, 2019 11:01 pm

Anytime I repair anything, I reset the ECU by removing power for a few minutes to clear any bad habits it may have learned before proceeding. Hopefully that's all it is for you.
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
underscore
GTFour God
 
Posts: 4222
Images: 0
Joined: Mon Apr 09, 2007 11:29 pm
Location: Kelowna, BC

Re: Fuel Cut disable/delete??? ST185

Postby Selsvik » Tue Jun 04, 2019 11:08 pm

i have tried this several times... unfortunately this does not do the charm for me :/
I have notised that the car is using a little bit oil. could that have anything to do with it?
Toyota Celica ST185 AllTrac
Selsvik
Club Member
 
Posts: 33
Joined: Sun Oct 28, 2018 8:02 pm

Re: Fuel Cut disable/delete??? ST185

Postby underscore » Wed Jun 05, 2019 3:04 am

Derp, I just noticed I already suggested that to you, sorry about that. Is it just struggling to build more boost than that or is it suddenly cutting power? Does the CEL work and are there any codes?
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
underscore
GTFour God
 
Posts: 4222
Images: 0
Joined: Mon Apr 09, 2007 11:29 pm
Location: Kelowna, BC

PreviousNext

Return to How To

Who is online

Users browsing this forum: No registered users and 0 guests