Supra bogg under boost

Semper_Fi · 04-29-2010, 02:34 AM

Well... i have a problem with my car... Its still currently in a huge rebuild... but i have a question. When i use to slam on the gas, my check engine light would turn on under boost... and it would run ruffly. Any one have a thought of what it could be?

<---ex owner of my car

cre · 04-29-2010, 02:49 AM

Knock or a knock sensor error... could be an "irregular boost condition" error too, usually due to improperly upping the boost.

Checked for diagnostic codes yet? Details are in the FAQ section if you don't already know how.

Semper_Fi · 04-29-2010, 03:59 PM

Quote:

Originally Posted by cre

Knock or a knock sensor error... could be an "irregular boost condition" error too, usually due to improperly upping the boost.

Checked for diagnostic codes yet? Details are in the FAQ section if you don't already know how.

No sir... i have not yet checked it. Ill check it now... still getting use to this site.
Sry for the pointless post.

Oh and i guess one last question... My car is swapped from an auto 7m to a 5 speed 7mgte. My gauge cluster dont work... how shall i fix that. Is it addaptable to my 5speed, or will i have to cave in and buy a new cluster.

cre · 04-30-2010, 12:14 AM

What part of the cluster *doesn't* work?

Semper_Fi · 04-30-2010, 02:36 AM

Quote:

Originally Posted by cre

What part of the cluster *doesn't* work?

The rpm and speedo.... Sry i forgot to mention that...

Also, im thinking of putting the 2-step from msd in my car... any one got input? What do i need to install?

cre · 04-30-2010, 03:26 AM

The speedometer is cable driven, it doesn't matter which gauge you use.

The tachometer is different between the non-turbo (7M-GE) and the turbo (7M-GTE). You can either swap out some resistors on the control board in the cluster or you may swap the whole tach mechanism... if you have another cluster, just swap it; Otherwise let me know and I'll dig up the details on what you need to change in the circuit... if you can solder it's not too difficult.

Semper_Fi · 04-30-2010, 10:11 PM

Quote:

Originally Posted by cre

The speedometer is cable driven, it doesn't matter which gauge you use.

The tachometer is different between the non-turbo (7M-GE) and the turbo (7M-GTE). You can either swap out some resistors on the control board in the cluster or you may swap the whole tach mechanism... if you have another cluster, just swap it; Otherwise let me know and I'll dig up the details on what you need to change in the circuit... if you can solder it's not too difficult.

That would be a great help... i can pull it out tonight to get it working my friend!!!

GettaRobo · 04-30-2010, 10:36 PM

If it helps you out at all, here's a picture of the tach PCB and what resistors need to be changed (highlighted in blue):

http://www.4cefed.com/tech/natachchanges.jpg

As for the actual details of how to go about getting at that board, soldering it, etc I hope cre will be able to help you out there as I have no clue.

Semper_Fi · 05-01-2010, 01:17 AM

Quote:

Originally Posted by GettaRobo

If it helps you out at all, here's a picture of the tach PCB and what resistors need to be changed (highlighted in blue):

http://www.4cefed.com/tech/natachchanges.jpg

As for the actual details of how to go about getting at that board, soldering it, etc I hope cre will be able to help you out there as I have no clue.

Thats helps allote. I guess i gotta use the old brain and figure out what goes in what location. Thanx!!!!

04-29-2010, 02:34 AM	#1
Semper_Fi 3" Exhaust Join Date: Apr 2010 Location: Kissimmee, FL Posts: 72	Supra bogg under boost Well... i have a problem with my car... Its still currently in a huge rebuild... but i have a question. When i use to slam on the gas, my check engine light would turn on under boost... and it would run ruffly. Any one have a thought of what it could be? <---ex owner of my car

04-29-2010, 02:49 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Knock or a knock sensor error... could be an "irregular boost condition" error too, usually due to improperly upping the boost. Checked for diagnostic codes yet? Details are in the FAQ section if you don't already know how. __________________ 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 --->

04-30-2010, 12:14 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	What part of the cluster doesn't work? __________________ 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 --->

04-30-2010, 03:26 AM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The speedometer is cable driven, it doesn't matter which gauge you use. The tachometer is different between the non-turbo (7M-GE) and the turbo (7M-GTE). You can either swap out some resistors on the control board in the cluster or you may swap the whole tach mechanism... if you have another cluster, just swap it; Otherwise let me know and I'll dig up the details on what you need to change in the circuit... if you can solder it's not too difficult. __________________ 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 --->

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04-30-2010, 10:36 PM	#8
GettaRobo 3" Exhaust Join Date: Apr 2009 Location: Saskatoon, SK Posts: 65	If it helps you out at all, here's a picture of the tach PCB and what resistors need to be changed (highlighted in blue): http://www.4cefed.com/tech/natachchanges.jpg As for the actual details of how to go about getting at that board, soldering it, etc I hope cre will be able to help you out there as I have no clue.