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Hi all , I was wondering if there is any plug in diagnostic tool for the 3 plug/4 plug EA82T . It'd be real handy to plug a device in that can tell me temps/throttle position/injectory duty cycle etc .

Cheers Adrian .

You could make one i think.

There are 2 plugs near the drivers side strut tower that are for diagnostics.
A feed from each sensor is terminated at these to plugs. So with a multimeter on ohms scale, you should be able to read temp, throttle pos. and on volt scale you should be able to read airflow, o2 sensor, ect.
Duty cycle will need a multimeter with duty cucle.

If you have a 3 plug ECU then the TPS reads only closed throttle and full open throttle. 4 plugs have a variable output and closed throttle signals. Duty cycle on red injectors are about 90%at 14psi. (cant remember exactly what the read is but its close to it)

My idea was to see if there was a factory style plug in tool that spells it all out . I need a good digital multimeter and after much research the ones that do EVERYTHING are called Fluke or not available in Australia . My absolute MUST have DMM features are :

1) Pulse width/Duty Cycle 1-99 %
2) Frequency
3) Min/max/average recording
4) Peak hold
5) Dual read out (numeric and bar graph)
6) Temperature
7) Usual volts/ohms/amps - prefer 20a .
Diode test and capacitance

It seems the hardest two to get are duty cycle and min/max/average recording and in the middle 900's a Fluke 189 is a bit steep .

I've looked into the available Digitech/Protek/Exitek and none have it all . There is one Meterman 38XR in the DS cattledog but its only showing voltage ranges 1/10/100/1000 so what about sub 1V ?

Anyway I need something that can read and record on the fly things like AFM output so I can alter (intercept) and change voltages to get the AFR's I want . If duty cycle can be seen larger injectors can be substituted to keep fueling up to the task .
A factory diagnostic tool or at a pinch a DMM could be used to see what signal values the std set up runs and alterations made to make the invaded ECU do what I want .

Cheers A .

CEM-AT 9945
* tacho with inductive pick up
*4000 count LCD
* 60 x 50mm screen
* DCV,ACV,DCA,ACA,resistance, RPM, dwell angle, duty cycle, freq, m-s pulse,temp, capacitance,continuity and diode check
* read pulse duty cycle and dwell angle for efi feedback
* data hold and relative functins
* milliseconds pulse width to test on time of fuel injectors, idle air control motors and tranny controls

$165 for IAME members 11-13 byrne st auburn ph 02 96481412

do enough for what you want ?

was thinking you could wire up all the four or five check connectors to a switchboard and select one at a time for analysis.

I really must have the min and max recording feature so that I can probe the airflow meter voltage output and have an idea what the computer expects to see . Obviously to do this it needs to be set so that it can record a highest voltage when driven flat stick . I also want to see its outputs through its cold start and warm up cycle so with hands and eyes free I can avoid the angel of death by driving the car not the multimeter !

From what I've found that Meterman 38XR comes closest and the damage is $199 through **** Smiths . About the only thing I can fault it on is the duty cycle is from 1-90 rather than 99 % . I comes with probes and screw in alligator clips , temp adapter and K type thermocouple and a magnetic hanging strap . All it needs is the parrot beak probe wire grabs and it will cover most things for me - including the Jaycar black box kits ...

I have a Tech Edge WB3A2 wide band 02 measuring/logging kit and it will get put to good use in time .

Cheers A .

discopotato03 wrote:My idea was to see if there was a factory style plug in tool that spells it all out . I need a good digital multimeter and after much research the ones that do EVERYTHING are called Fluke or not available in Australia . My absolute MUST have DMM features are :

1) Pulse width/Duty Cycle 1-99 %
2) Frequency
3) Min/max/average recording
4) Peak hold
5) Dual read out (numeric and bar graph)
6) Temperature
7) Usual volts/ohms/amps - prefer 20a .
Diode test and capacitance

It seems the hardest two to get are duty cycle and min/max/average recording and in the middle 900's a Fluke 189 is a bit steep .

I've looked into the available Digitech/Protek/Exitek and none have it all . There is one Meterman 38XR in the DS cattledog but its only showing voltage ranges 1/10/100/1000 so what about sub 1V ?

Anyway I need something that can read and record on the fly things like AFM output so I can alter (intercept) and change voltages to get the AFR's I want . If duty cycle can be seen larger injectors can be substituted to keep fueling up to the task .
A factory diagnostic tool or at a pinch a DMM could be used to see what signal values the std set up runs and alterations made to make the invaded ECU do what I want .

Cheers A .

fluke 78 does 90% of it.lacks capacitance that is $650 from snap on. there is another DSO version from fluke thats roughly $1600 that WILL do it. I have yet to buy that one.

I ended up with that 38XR so we'll see how it goes .

Cheers A .