Power Key Bypass - ZR-1 Net Registry Forums

jdodds1111 · 07-02-2005

I want to bypass the Power Key

I have a 1990 LT5 Engine fitted to an Ultima GTR. The wiring has been quite a challenge. The engine is running well but have not got the secondary throttles to come in yet. I have only 1 trouble Code 24 VSS signal. I don't think taht should effect 2nd throttles.
The power key is my next try but I have no wiring diagrams for a 1990 only 1991 and on. Any body know the resistance values for full power key module and the wiring codes and colors at the ECU.

John
England

mrcrowley · 07-23-2005

What is it you are exactly trying to do with the power key?

jdodds1111 · 07-23-2005

Hi
I've fitted an LT5 to an Ultima GTR it uses a Porsche G50 gearbox. The cars running well but the second thottles are not coming in.
The engine is 1990 and uses a seperate ESC module for the Knock sensor.
The power key has been earthed out.
There is no speed sensor as I can not fit one to the Porsche box so I get the assosiated trouble code.
I sometimes get a cam sensor code.
I don't get any vacuum or second injector codes.
The engine pulls smoothly with no hesitation.
There are no indications of lean mixture.
The engine revs up to 7000rpm ok.

Can you help?

John

redvett94 · 08-02-2005

Quote:

Originally Posted by jdodds1111

I want to bypass the Power Key

I have a 1990 LT5 Engine fitted to an Ultima GTR. The wiring has been quite a challenge. The engine is running well but have not got the secondary throttles to come in yet. I have only 1 trouble Code 24 VSS signal. I don't think taht should effect 2nd throttles.
The power key is my next try but I have no wiring diagrams for a 1990 only 1991 and on. Any body know the resistance values for full power key module and the wiring codes and colors at the ECU.

John
England

Any trouble code will default to reduced power.

Jim Jones · 08-02-2005

Sounds like an awesome car. Can you post some pics of it when you get a chance? I've never seen an Ultima GTR?

Thanks!!

Jim

07-02-2005	#1
jdodds1111 Join Date: Jun 2005 Location: Lancashire England Posts: 6	Power Key Bypass I want to bypass the Power Key I have a 1990 LT5 Engine fitted to an Ultima GTR. The wiring has been quite a challenge. The engine is running well but have not got the secondary throttles to come in yet. I have only 1 trouble Code 24 VSS signal. I don't think taht should effect 2nd throttles. The power key is my next try but I have no wiring diagrams for a 1990 only 1991 and on. Any body know the resistance values for full power key module and the wiring codes and colors at the ECU. John England __________________ Using an LT5 1990 fitted to an Ultima GTR and Porsche Box

07-23-2005	#2
mrcrowley Join Date: Jan 2005 Location: Slidell, LA Posts: 9	What is it you are exactly trying to do with the power key? __________________ [url=www.acsvette.com]EES, Inc.[/url] [url=http://eesvette.hyperboards.com/index.cgi] EES, Forums.[/url]

07-23-2005	#3
jdodds1111 Join Date: Jun 2005 Location: Lancashire England Posts: 6	Secondary Power Hi I've fitted an LT5 to an Ultima GTR it uses a Porsche G50 gearbox. The cars running well but the second thottles are not coming in. The engine is 1990 and uses a seperate ESC module for the Knock sensor. The power key has been earthed out. There is no speed sensor as I can not fit one to the Porsche box so I get the assosiated trouble code. I sometimes get a cam sensor code. I don't get any vacuum or second injector codes. The engine pulls smoothly with no hesitation. There are no indications of lean mixture. The engine revs up to 7000rpm ok. Can you help? John __________________ Using an LT5 1990 fitted to an Ultima GTR and Porsche Box

08-02-2005	#5
Jim Jones Join Date: Apr 2005 Location: I'm in a constant state of euphoria in the Z! Posts: 237	Sounds like an awesome car. Can you post some pics of it when you get a chance? I've never seen an Ultima GTR? Thanks!! Jim __________________ Life's too short to be unhappy! [IMG]http://i4.photobucket.com/albums/y128/koolaid117/Montage.gif[/IMG]