Weird problem! Need HELP!!

Jllahman · 12-03-2010, 11:35 PM

So I just rebuilt my 7mgte and got it to idle good, but it would hit fuel cut at 2000 rpm, so I asked a friend who as one and he said check the throttle position sensor so I replaced it with an extra one I had and did the same thing. So then I just unplugged the TPS and it ran perfect! It would rev to redline and runs great! Lol what's the problem? Should I even worry about it?

Jllahman · 12-05-2010, 03:03 AM

Bump anyone have any ideas?

MA70-3.0GT · 12-12-2010, 05:34 PM

get onto the tsrm & read up about calibrating the tps, and also how to read codes.

Oh, and the likely reason you got no reply previously is because people appreciate it when you use the search facility since they get tired of repeating simple fixes when they've been here a while... (so what's my excuse? I'm bored lol)

Jllahman · 12-31-2010, 03:02 AM

Another problem... I fixed the tps but now when I'm driving it will accelerate smooth til about 3 or 3500 rpm then will kind of bog down/hesistate and not accelerate much after that.. what could be the problem? Boost leak or not enough fuel?

Green7mgte · 12-31-2010, 07:08 PM

whats up central ohio.. canton here..
is your timing correct? are you using the correct fuel pressure?
what upgrades / mods did you do to it..
if you unplug the tps does the problem go away?

Jllahman · 12-31-2010, 07:28 PM

Timing is set to factory 10* btdc. Mods I'm running are 2.0mm headgasket, Greddy bov that is recirculated, 3in turbo back exhaust and an upgraded front mount intercooler. And the problem still occurs when the tps is unplugged. I'm thinking its a boost leak but I've tripple checked all the unions in the system...

Jllahman · 12-31-2010, 07:35 PM

And as far as fuel pressure, I'm running stock fuel pump and stock pressure regulator and there's no gauge so I'm not sure what the pressure is. The regulator is running on the stock vaccum location also. And as far as boost its stock pressure.

Green7mgte · 01-02-2011, 12:21 AM

nothing you've done points to low fuel pressure.
what codes do you have.

Jllahman · 01-02-2011, 07:42 AM

The only code is 11. Which I looked up and is intermittent power failure to the ecu. So I reground the ecu wires but it still happens..

rudevo · 01-03-2011, 12:59 AM

Quote:

Originally Posted by jllahman

so i just rebuilt my 7mgte and got it to idle good, but it would hit fuel cut at 2000 rpm, so i asked a friend who as one and he said check the throttle position sensor so i replaced it with an extra one i had and did the same thing. So then i just unplugged the tps and it ran perfect! It would rev to redline and runs great! Lol what's the problem? Should i even worry about it?

i would like to know what should i do now, i check for spark, fuel to the rail and found nothing there.

12-03-2010, 11:35 PM	#1
Jllahman Stock Join Date: Dec 2010 Location: Central Ohio Posts: 8	Weird problem! Need HELP!! So I just rebuilt my 7mgte and got it to idle good, but it would hit fuel cut at 2000 rpm, so I asked a friend who as one and he said check the throttle position sensor so I replaced it with an extra one I had and did the same thing. So then I just unplugged the TPS and it ran perfect! It would rev to redline and runs great! Lol what's the problem? Should I even worry about it?

12-12-2010, 05:34 PM	#3
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	get onto the tsrm & read up about calibrating the tps, and also how to read codes. Oh, and the likely reason you got no reply previously is because people appreciate it when you use the search facility since they get tired of repeating simple fixes when they've been here a while... (so what's my excuse? I'm bored lol) __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

12-31-2010, 07:08 PM	#5
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	whats up central ohio.. canton here.. is your timing correct? are you using the correct fuel pressure? what upgrades / mods did you do to it.. if you unplug the tps does the problem go away? __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

01-02-2011, 12:21 AM	#8
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	nothing you've done points to low fuel pressure. what codes do you have. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Really Bad weird starting problem?	Raysupra	MKIII Supra	7	12-04-2010 10:45 PM
speed sensor problem	nadircicek	Non-Generation Specific Questions	8	10-09-2009 05:58 PM
Weird clutch problem	wbeams	MKII Supra	11	09-18-2008 05:36 AM
weird problem with my 89	performancevegas	MKIII Supra	4	04-06-2008 11:38 PM
This is kind of Weird, Problem with Electric System	woundsofchrist	Non-Generation Specific Questions	0	11-04-2007 06:53 PM

12-05-2010, 03:03 AM	#2
Jllahman Stock Join Date: Dec 2010 Location: Central Ohio Posts: 8	Bump anyone have any ideas?

12-31-2010, 03:02 AM	#4
Jllahman Stock Join Date: Dec 2010 Location: Central Ohio Posts: 8	Another problem... I fixed the tps but now when I'm driving it will accelerate smooth til about 3 or 3500 rpm then will kind of bog down/hesistate and not accelerate much after that.. what could be the problem? Boost leak or not enough fuel?

12-31-2010, 07:28 PM	#6
Jllahman Stock Join Date: Dec 2010 Location: Central Ohio Posts: 8	Timing is set to factory 10* btdc. Mods I'm running are 2.0mm headgasket, Greddy bov that is recirculated, 3in turbo back exhaust and an upgraded front mount intercooler. And the problem still occurs when the tps is unplugged. I'm thinking its a boost leak but I've tripple checked all the unions in the system...

12-31-2010, 07:35 PM	#7
Jllahman Stock Join Date: Dec 2010 Location: Central Ohio Posts: 8	And as far as fuel pressure, I'm running stock fuel pump and stock pressure regulator and there's no gauge so I'm not sure what the pressure is. The regulator is running on the stock vaccum location also. And as far as boost its stock pressure.

01-02-2011, 07:42 AM	#9
Jllahman Stock Join Date: Dec 2010 Location: Central Ohio Posts: 8	The only code is 11. Which I looked up and is intermittent power failure to the ecu. So I reground the ecu wires but it still happens..