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Registered:
May 2002
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 Re: 2TGEU -> THW Operation
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Sun, 16 June 2002 02:34
 
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Karl,
sounds like you have the earlier model 2TG head, head #220 without the yamaha writting on the front(??) or maybe its the yamaha head but without the yamaha head water thermostat housing. Anyways, you'll need one of these housings with the extra EFI connection if you want to run the EFI properly. I've got one you could have for $40+postage if you need it, but sounds like you could run it with the cold start injector.
what your looking for is here-
http://toyoefi.freeyellow.com/EFI13.jpg
or goto-
http://toyoefi.freeyellow.com/
and click on the water and air thermo sensors link to get an enlarged pic.
This log graph shows that when the engine is running around 80degrees C the resistance from the sensor is around 0.4kOhms, so if you just whack a resister between the connections then you can emulate the warm engine temperature.
I was reading your celica mailist message how you hooked 12V and a potentiometer to the cold start, how wells does this work? mines not hooked up at the moment.
rob
YOTA22
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