how do i use datamaster to change iac counts and tps volts

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Aug 30, 2005 | 05:22 PM

93redlt1

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Joined: Apr 2004

Posts: 121

how do i use datamaster to change iac counts and tps volts

I am familiar with scanning the car but dont know how to set the tps sensor or iac in closed loop. I know both of them are way off which is causing some idle problems for me.

Aug 30, 2005 | 10:17 PM

SWINGRRR

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Joined: Oct 2002

Posts: 748

From: P-cola Fl

Re: how do i use datamaster to change iac counts and tps volts

Post this on www.speeddensity.org
Probably get alot more replies.

Aug 30, 2005 | 10:30 PM

shoebox

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Joined: Dec 1969

Posts: 27,727

From: Little Rock, AR

Re: how do i use datamaster to change iac counts and tps volts

Quote:

Originally Posted by 93redlt1

I am familiar with scanning the car but dont know how to set the tps sensor or iac in closed loop. I know both of them are way off which is causing some idle problems for me.

Datamaster is not a programmer-just a datalogger/scanner.

Aug 30, 2005 | 11:25 PM

Injuneer

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Joined: Nov 1998

Posts: 71,098

From: Hell was full so they sent me to NJ

Re: how do i use datamaster to change iac counts and tps volts

Depends how they are "off".

If the IAC counts are too low and TPS volts too high, you may have the throttle stop screw out too far. Adjusting the throttle screw to allow the blades to close would bring the IAC counts up. When you get them in the 20-40 range, and the correct idle speed, make sure the TPS is between 0.20-0.80V. If its an aftermarket throttle body, may need to slot the screw holes in the TPS sensor to allow it to be rotated to change the voltage.

But if your IAC counts are too high, you have to find another source of the problem.