How can reduced engine power be turned on?

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Jan 20, 2008 | 09:33 AM

Fast one

Thread Starter

Safety Car

Joined: Jan 2001

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From: Hilton NY

How can reduced engine power be turned on?

What is an easy way to cause the reduced engine power to turn on? I would like to add a switch so that it could be turned on when needed like a valet key.

Jan 20, 2008 | 10:40 AM

BitViper

Melting Slicks

Joined: Jan 2007

Posts: 3,103

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From: Sandy Ego Ca.

I bought a Cyclops ignition interrupter..but it wont limit the speed..just wont start

Jan 20, 2008 | 10:52 AM

FourG63 97GST

Melting Slicks

Joined: Mar 2006

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From: South Florida FL

bit more difficult, but I usually reflash it and set the rev limit to 2500rpms

Jan 20, 2008 | 12:40 PM

DngrZne

Le Mans Master

Joined: Apr 2000

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From: Cresskill NJ

I believe there are some guys running a custom OS that allows a switch to be installed that switches the computer to a different fuel map when activated, but this would be better asked in the scan and tune section.

Chris

Jan 20, 2008 | 12:57 PM

robvuk

Le Mans Master

Joined: Sep 2004

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From: Los Angeles

Quote:

Originally Posted by Fast one

What is an easy way to cause the reduced engine power to turn on? I would like to add a switch so that it could be turned on when needed like a valet key.

Probably best answered by a real tech but I'll bet you can do it with the wire from the engine temperature sensor. I believe the car goes into reduced power when it overheats. All you need is the appropriate resistor for getting an overheated readout. But there might be a requirement for knock sensors too. That would complicate things.

Jan 20, 2008 | 01:33 PM

runamuk

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From: Slave to the evil empire

Cruise-In V Veteran

St. Jude Donor '04

I don't know which wire but you could tie it into the throttle position sensor.

Jan 20, 2008 | 02:41 PM

Got uid0

Le Mans Master

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St. Jude Donor '17

Let the knock sensors detect knock

clap some boards near one?

Feb 23, 2008 | 10:39 AM

Fast one

Thread Starter

Safety Car

Joined: Jan 2001

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From: Hilton NY

When the weather breaks in May I'll tie a switch into the system and if it works I'll post how it was done, this should limit the speed to 25mph until reset.

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Mar 1, 2008 | 06:24 PM

corvette430hp

Intermediate

Joined: Mar 2006

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From: Great Falls MT

Let me know how this works out for you. I have had my car jump into that mode once when I fired it up it was like a old modle T performance wise 0-30 in like 10 seconds

Mar 2, 2008 | 12:26 AM

#10

Bill Curlee

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From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

Quote:

Originally Posted by runamuk

I don't know which wire but you could tie it into the throttle position sensor.

ANY Throttle position sensor or Accelerator peddle sensor error will set it in a skinny minute!

Mar 3, 2008 | 09:37 AM

#11

Fast one

Thread Starter

Safety Car

Joined: Jan 2001

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From: Hilton NY

Thanks Bill, I'll try this when it's warmer out. The accelerator pedal location makes wiring easy.

Mar 3, 2008 | 01:39 PM

#12

LostCauseZ06

Racer

Joined: Aug 2005

Posts: 309

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From: Riverdale Utah

yep the TPS sensor is a PITA... lol. one of my wires had a tiny slice in it thanks to a thrown belt taking it out. never noticed and couldnt trace down why i was getting random "reduced engine power". you could have a button rigged up that interrupts the signal for a millisecond when started , that way it keeps it in reduced engine power until you shut it off and restart it. That way it is also still driveable.