anyone using craigs ecmtest please read
Member
Joined: Jul 2000
Posts: 402
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From: SoCal
Yep,
mine is off too. Mine is around 90% too at full throttle. With no pedal depression it says have 10% throttle. I have checked the voltage and adjustment of my TPS and it is within specs, sees 5v, .54v idle, 4.5v full throttle. My TPS sensor is about 3 months old.
An interesting thing is before I start my car the same menu shows 0% throttle at idle. After starting the car the %throttle gets messed up. After shutting down the car the %throttle is still wrong. Therefore the additional voltage of the alternator might be a trigger for the error but it is not the cause of it.
James
------------------
1985 Z-28 305 TPI
165 ECM,STB,SFC,GW "wonderbar"
mine is off too. Mine is around 90% too at full throttle. With no pedal depression it says have 10% throttle. I have checked the voltage and adjustment of my TPS and it is within specs, sees 5v, .54v idle, 4.5v full throttle. My TPS sensor is about 3 months old.
An interesting thing is before I start my car the same menu shows 0% throttle at idle. After starting the car the %throttle gets messed up. After shutting down the car the %throttle is still wrong. Therefore the additional voltage of the alternator might be a trigger for the error but it is not the cause of it.
James
------------------
1985 Z-28 305 TPI
165 ECM,STB,SFC,GW "wonderbar"
TGO Supporter
Joined: Jul 1999
Posts: 10,907
Likes: 4
From: The Bone Yard
Car: Death Mobile
Engine: 666 c.i.
Possibly, Craig's software is using 5.00 volts as the criteria for 100%? Just a thought.
I will have to look at the ALDL Datastream to see if TPI% is an actual factor that is communicated from the ECM.
I will have to look at the ALDL Datastream to see if TPI% is an actual factor that is communicated from the ECM.
Supreme Member
Joined: Jul 1999
Posts: 1,577
Likes: 0
From: Baton Rouge, LA, USA
Car: 87 T/A
Engine: 441 SBC 12.5:1 0.680" Lift
Transmission: T-56
Axle/Gears: 4.10 TruTrac Moser 9"
The software does indeed scale from 0 to 5 volts corresponding to 0 to 100%. So at idle, you should show around 10.8% (.54v) and at WOT it should show around 90% (4.5v). Sorry for the confusion...
To clarify, 87% is equivalent to 4.35v, so you are doing okay.
[This message has been edited by Craig Moates (edited July 08, 2001).]
To clarify, 87% is equivalent to 4.35v, so you are doing okay.
[This message has been edited by Craig Moates (edited July 08, 2001).]
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