Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 03-08-2010, 04:36 PM   #1
john_lauj
Stock
 
Join Date: Mar 2010
Location: frresno
Posts: 20
john_lauj is on a distinguished road
Default my 89 supra turbo choke at 3800 rpm

yea my 89 supra turbo chokes and gets fuel cut. when i bought the car the guy said he was boost about 12 psi. so wat i did was i got a ls400. it stop the fuel cut but still the car was hesitated to go past 4000 rpm. so my next guest was to put a 3 inch all the way. i did it but now i get the fuel cut again and still choke about 3800rpm.

ANY HELP GUYS
john_lauj is offline   Reply With Quote
Old 03-08-2010, 04:48 PM   #2
TripleC
3" Exhaust
 
TripleC's Avatar
 
Join Date: Nov 2009
Location: Fort Collins, CO
Posts: 103
TripleC is on a distinguished road
Default

Did you check the gap on your plugs. I had a hick-up at around 4500 to 5000 and thats what my issue was.
Quote:
Originally Posted by john_lauj View Post
yea my 89 supra turbo chokes and gets fuel cut. when i bought the car the guy said he was boost about 12 psi. so wat i did was i got a ls400. it stop the fuel cut but still the car was hesitated to go past 4000 rpm. so my next guest was to put a 3 inch all the way. i did it but now i get the fuel cut again and still choke about 3800rpm.

ANY HELP GUYS
__________________
1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads
2 additional C12A turbo's(Extra)
TripleC is offline   Reply With Quote
Old 03-08-2010, 04:49 PM   #3
Cyto
3" Exhaust
 
Cyto's Avatar
 
Join Date: Jul 2009
Location: USA
Posts: 103
Cyto is on a distinguished road
Default

Mines doing the exact same thing.... Except at like 4200. I just changed the fuel filter, and found out my wastegate actuator wasn't connected to the wastegate flange. So I hooked it back up, and now it's doing that.

It's crazy. If you get any break throughs let me know lol I shall do the same.
__________________
Proud owner of a 1988 Toyota Supra Turbo, 105k Miles, and great condition.

I might have to sell it to help pay for school so here's the link.

http://www.toyota-supra.info/forums/...html#post72357
Cyto is offline   Reply With Quote
Old 03-08-2010, 04:54 PM   #4
john_lauj
Stock
 
Join Date: Mar 2010
Location: frresno
Posts: 20
john_lauj is on a distinguished road
Default

Also my boost is no accurate. 1 gear ill be boosting 4psi, 2 ill be boosting anywhere from 4-6, and same with the rest of the gear. if i keep pushing it, ill get fuel cut about 4500-5000 rpm.. oh yea i also recently replace my spark plugs too.
john_lauj is offline   Reply With Quote
Old 03-08-2010, 05:00 PM   #5
TripleC
3" Exhaust
 
TripleC's Avatar
 
Join Date: Nov 2009
Location: Fort Collins, CO
Posts: 103
TripleC is on a distinguished road
Default

Quote:
Originally Posted by john_lauj View Post
Also my boost is no accurate. 1 gear ill be boosting 4psi, 2 ill be boosting anywhere from 4-6, and same with the rest of the gear. if i keep pushing it, ill get fuel cut about 4500-5000 rpm.. oh yea i also recently replace my spark plugs too.
What was the gap you set them for ? and did you look to see if your coils had any cracks (people have had this hapen before) on them.
Do you have a FMIC?
__________________
1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads
2 additional C12A turbo's(Extra)
TripleC is offline   Reply With Quote
Old 03-08-2010, 05:08 PM   #6
john_lauj
Stock
 
Join Date: Mar 2010
Location: frresno
Posts: 20
john_lauj is on a distinguished road
Default

it came pre gap already. im also a new member to the mk3 family so like fmic or afm all that is new to me so can u please b more specific with me. i will like to learn them too.
john_lauj is offline   Reply With Quote
Old 03-08-2010, 05:12 PM   #7
TripleC
3" Exhaust
 
TripleC's Avatar
 
Join Date: Nov 2009
Location: Fort Collins, CO
Posts: 103
TripleC is on a distinguished road
Default

Quote:
Originally Posted by john_lauj View Post
it came pre gap already. im also a new member to the mk3 family so like fmic or afm all that is new to me so can u please b more specific with me. i will like to learn them too.
The gap is usually preset but can be out of range from the factory. i would pull them out and get one of those 1$ gauges from Autozone and make sure they were all at the same setting. Secondly a Front Mount Inter Cooler or FMIC would have cylicone hoses that could have a leek.
Air Fuel Meter = AFM
__________________
1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads
2 additional C12A turbo's(Extra)
TripleC is offline   Reply With Quote
Old 03-08-2010, 06:18 PM   #8
john_lauj
Stock
 
Join Date: Mar 2010
Location: frresno
Posts: 20
john_lauj is on a distinguished road
Default

if i slowly gas it will go with no choke. only when the turbo spool hard is when i get the choke. someone has told me that its my speed box unit but i doubt it. i dont want that to be the problem.
john_lauj is offline   Reply With Quote
Old 03-08-2010, 06:20 PM   #9
TripleC
3" Exhaust
 
TripleC's Avatar
 
Join Date: Nov 2009
Location: Fort Collins, CO
Posts: 103
TripleC is on a distinguished road
Default

Quote:
Originally Posted by john_lauj View Post
if i slowly gas it will go with no choke. only when the turbo spool hard is when i get the choke. someone has told me that its my speed box unit but i doubt it. i dont want that to be the problem.
Dude i had this same issue i could go easy and excelerate so there was no missfire but if i punched it it would miss around 4-5. Re-gap our plugs to around .028. do this then let us know what ahppens
__________________
1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads
2 additional C12A turbo's(Extra)
TripleC is offline   Reply With Quote
Old 03-09-2010, 01:28 AM   #10
cre

Toyota
Racing
Development
 
cre's Avatar
 
Join Date: Apr 2007
Posts: 5,038
cre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond reputecre has a reputation beyond repute
Default

Quote:
Originally Posted by john_lauj View Post
yea my 89 supra turbo chokes and gets fuel cut. when i bought the car the guy said he was boost about 12 psi. so wat i did was i got a ls400. it stop the fuel cut but still the car was hesitated to go past 4000 rpm. so my next guest was to put a 3 inch all the way. i did it but now i get the fuel cut again and still choke about 3800rpm.

ANY HELP GUYS
What size injectors are you running? You say you added a Lex AFM, but you don't say anything about upgrading the injectors along with it... which you need to.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.

If you're so inclined I'm always more than happy to accept tips via PayPal.
Tip Jar --->
cre is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Information about non turbo Supra Jimbo_2JZ Non-Generation Specific Questions 3 02-20-2009 10:13 PM
1988 Toyota Supra Turbo runs very rich need help PhillyKorean Non-Generation Specific Questions 0 10-25-2008 03:28 PM
HorsepowerFreaks Turbo M3 vs Single Turbo Supra ChrisB Non-Generation Specific Questions 0 01-01-2007 04:56 PM


All times are GMT. The time now is 02:23 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87