MOVED FROM NEWBIE THREAD>>>>
Join Date: Sep 2007
Location: Belfast Maine
The ECU is looking for a signal from the TCU. You need to ground the AT/MT id pin at the ECU.
Fuel temp you need to add in the sensor, it's a little thing that sits on the fuel sending unit.
Idle control be sure it's clean and not sticking and the throttle isn't hanging open a bit.
Purge valve, you'll need to add it in and wire it up even if it doesn't do anything. You might be able to measure the resistance of it and add a resistor in the harness in place of it.
Crank sensor, should be able to just follow the manual to diagnose it.
69subaru360 is online now Report Post Reply With Quote Multi-Quote This Message Quick reply to this message
Old Today, 10:27 AM #4
Join Date: Jan 2013
Location: Paonia, Colorado
1974 VW Campmobile-E
Thanks for reply 360. After hundreds of hours researching this ECU setup, it seems that pin B26 which is neutral safety switch should be left open and this era ECU does not have an AT/MT pin? Or at least there is not a lead for it. General consensus is there is an AT Ecu and a different model ECU for MT on 2000 EJ25's. (Unlike other years that share UCU's)
Also general consensus is this engine does not need Fuel Temp sensor to run properly. A CEL light maybe but no performance issues.
Will check IAC for cleanliness.
Purge Valve also not needed as I am running W/o Cannister.
Will test Crank Sensor.
Is there any info concerning what exactly limp mode is? Is it different symptoms for each system? Does my case sound like limp mode?