why isnt my temp sender working? how does it work?

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Originally Posted by Civic Accord Honda

i know you got it working but just wondering a question lol


on efi it has a contecter like this sticking up on the sensor
http://www.tme.eu/katalog_pics/2/6/0...9/st-040_b.jpg
without the plastic piece of course lol

i just cut the old metal one off and crimped one of theses on
http://www.tme.eu/katalog_pics/1/6/a...3/st-050_b.jpg

of course it was grounded to the engine , but just wonder if carb cars are the same way? or are they to 2 wire type with a plastic contecter on the end like on the newer hondas?

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they are the same, i just think the efi has an extra sender for the computer not sure, the late model ones are the same also just bigger, the two wire connector is eithier the temp sender for the computer or the cold start sender, D series looks just like it but bigger,single contact,plus the computer sender and a two wire sender to tell the computer the engine is cold, OBD2

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Originally Posted by ecogabriel

Sorry for the half-ass post; I'm reading a computer file and I reading at the forum at the same time...
LX-i has the temperature sender threaded in the thermostat housing (at the rear side if you look at the engine from the front.
It also has the temperature sensor (for the ECU) and the fan switch, and a wax valve or something of that sort (i think it operates in my case the canister purge)

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multi quote is broke sorry, all he need to fix this problem with his is an efi housing. the fan switch should be in the bottom of the radiator, thats probably a temp sender for the ecu, not sure, most efi have ones sender for the gauge and one dedicated sender for the computer. he can leave the unused sensors in place and use the temp sender. Itzdave let me know how connecting the hoses together works, i was going to bypass through my manifold, but i can't get the one AN line around the corner of the manifold and I'm going to say the hell with the heated manifold and just run a bypass. you know how it works right? when the thermostat is blocking coolant flow, the coolant is forced through the bypass hose and through the manifold also on the EFI cars some goes through the throtte body, and the carb cars through the carb coolant passage. when the thermostat opens, since the hose and opening is bigger then the bypass, it has less resistance and most cdoolant flows through it, some always continues to flow through the bypass, but not as much. the bigger the bypass hose, the more will flow through it off bypass, thats why the heater hoses are so big and have a valve to shut them off.

EFI's have two fan switches. The regular one is low in the radiator
The other is the thermostat housing. They look similar but the temperatures at which they switch are different (92C and 104-108C I believe, or close to those numbers)

The one at the thermostat turns on the fans if the engine stops hot and temperature rises a bit more it will turn the fans on (actually I believe it is the smaller fan) for up to 15 min. That switch is connected to a box under the passenger seat that commands the fans.

You can leave the extra switch(es) installed and use the EFI housing.