power issue - Page 2

Green7mgte · 08-28-2010, 02:06 PM

i doubt he has a code 51..
he said he didnt receive a code till he turned the car on.. and moved the throttle. .. soo.
still check for boost leaks.

Travis89Turbo · 08-28-2010, 02:12 PM

Do check for boost leaks but code 51 and 52 are not stored in the ecu they are real time codes so the only way to check them is if the car is on and running... but your right he shouldn't check it while reviving it up. He needs to take a drive with the jumper out and if the check light comes on go check the code while car is still running at idle. Don't shut the car off or the code will clear

Green7mgte · 08-29-2010, 01:18 AM

its funny were still discussing this but he hasnt posted back in acouple days.. LOL.. boo

MJG · 08-29-2010, 02:28 AM

Pull your EFI fuse, 15A in engine compartment fuse box. Leave the fuse out for a couple of minutes. This will clear loged codes, turning off the ignition will NOT clear codes.
Start the engine and go for a short drive. The ECU will go through a "learing process" for a short period of time.
Return home and check for codes again.
This will give you which code(s) are active and not loged. If you have codes, let the them run through two or three times to make sure you counted correctly.
Fuel cut @ 2400RPM, I doubt it.
Vacuum/boost leak is a posibility. However, if you have an active 51 code, most likely it is an issue with the throttle position sensor or wiring.

Travis89Turbo · 08-29-2010, 02:40 AM

Quote:

Originally Posted by MJG

Pull your EFI fuse, 15A in engine compartment fuse box. Leave the fuse out for a couple of minutes. This will clear loged codes, turning off the ignition will NOT clear codes.

If u pay attention to what I posted I said code 51 and 52 do not store in the ecu. They are realtime codes so yes the second u shut the key off, those codes ONLY will clear.....

I agree with Green7mgte why we discussing this still when the poster isn't keeping us posted? We don't even kno if he actually has any codes. I'm out!!!!!!!_!!!

brandon bowles · 08-29-2010, 04:01 AM

ok i have fix the problem change the MAF back to the stock one and now the car runs great till i hit fuel cut. so now i have to get a regulator to build up the fuel to bout 58psi right? cause it still has the stock regulator which produces 38-40psi. once i hit fuel cut i have give it a min to build the fuel pressure back and then go again.

cre · 08-29-2010, 05:03 PM

Jebus.... I'm gonna smack someone...

OP's describing limp mode.... there's a critical fault in the system.

Code 51 is NOT related to ANYTHING to do with knock.

Code 52 DOES store in the ECU; Code 51 does not... it's one of the few real-time codes.

We done now?

OP, how much boost are you trying to run?

brandon bowles · 08-29-2010, 10:44 PM

ok now i have code 14 an 34. 34 would that have anything to do with wiring from the boost gauge being cut? 14 not for sure. now when i start the car and go down the street when the car trys to boost it acts like fuel cut in 1-4 gears and in 5th but after hitting it like 3-4 times it will boost all the way up to 9lbs and act fine as long as i dont hit fuel cut. I HATE FIXING OTHER PEOPLES FUCK UPS!!!!!!

08-28-2010, 02:06 PM	#11
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	i doubt he has a code 51.. he said he didnt receive a code till he turned the car on.. and moved the throttle. .. soo. still check for boost leaks. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

08-28-2010, 02:12 PM	#12
Travis89Turbo 12psi boost Join Date: Jul 2010 Location: Utah Posts: 332	Do check for boost leaks but code 51 and 52 are not stored in the ecu they are real time codes so the only way to check them is if the car is on and running... but your right he shouldn't check it while reviving it up. He needs to take a drive with the jumper out and if the check light comes on go check the code while car is still running at idle. Don't shut the car off or the code will clear __________________ 1995 Toyota Supra SE 71k miles. Master power T70 stock 2jzge 1989 Toyota Supra. 1jzgte swap 5 speed of course.. Driftmotion 60-1 single turbo kit. Cxracing FMIC. 2jz 550cc injectors... soon to come..... EMS Stinger. BC 264 cams 680cc injectors Spec stage 4 clutch and A LOT of boost!------SOLD 1999 Ford F350 diesel 2004 Jaguar XJR Supercharged If it hasnt broke you haven pushed it hard enough!!

08-29-2010, 01:18 AM	#13
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	its funny were still discussing this but he hasnt posted back in acouple days.. LOL.. boo __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

08-29-2010, 04:01 AM	#16
brandon bowles Stock Join Date: Aug 2010 Location: kentucky Posts: 6	power issue ok i have fix the problem change the MAF back to the stock one and now the car runs great till i hit fuel cut. so now i have to get a regulator to build up the fuel to bout 58psi right? cause it still has the stock regulator which produces 38-40psi. once i hit fuel cut i have give it a min to build the fuel pressure back and then go again.

08-29-2010, 05:03 PM	#17
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Jebus.... I'm gonna smack someone... OP's describing limp mode.... there's a critical fault in the system. Code 51 is NOT related to ANYTHING to do with knock. Code 52 DOES store in the ECU; Code 51 does not... it's one of the few real-time codes. We done now? OP, how much boost are you trying to run? __________________ 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 --->

08-29-2010, 02:28 AM	#14
MJG 3" Exhaust Join Date: Mar 2010 Location: Washington State Posts: 125	Pull your EFI fuse, 15A in engine compartment fuse box. Leave the fuse out for a couple of minutes. This will clear loged codes, turning off the ignition will NOT clear codes. Start the engine and go for a short drive. The ECU will go through a "learing process" for a short period of time. Return home and check for codes again. This will give you which code(s) are active and not loged. If you have codes, let the them run through two or three times to make sure you counted correctly. Fuel cut @ 2400RPM, I doubt it. Vacuum/boost leak is a posibility. However, if you have an active 51 code, most likely it is an issue with the throttle position sensor or wiring.

08-29-2010, 10:44 PM	#18
brandon bowles Stock Join Date: Aug 2010 Location: kentucky Posts: 6	power issue ok now i have code 14 an 34. 34 would that have anything to do with wiring from the boost gauge being cut? 14 not for sure. now when i start the car and go down the street when the car trys to boost it acts like fuel cut in 1-4 gears and in 5th but after hitting it like 3-4 times it will boost all the way up to 9lbs and act fine as long as i dont hit fuel cut. I HATE FIXING OTHER PEOPLES FUCK UPS!!!!!!

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