Thermal Timer (240 model) Location?

Steyr22 · Post by **Steyr22** » 21 Oct 2006, 01:45

Can anyone tell me where the Thermal Timer is on a 1093 EFI 240?

I know it is screwed into the engine block but I cannot find it.

A brief description of where it is located would be fine.

Steyr22 · Post by **Steyr22** » 21 Oct 2006, 01:47

That should read 1983 240 not 1093 (fat fingers)

LaRy · Post by **LaRy** » 21 Oct 2006, 02:46

I suppose you are looking for the thermal timer for the EGR-valve in a mechanical EGR system. Normally it is placed close under the intake, between the first and second cylinder. It could be difficult to change. This air valve can be broken, it should normally be closed until the water temperature is over 60 degrees Celcius. If not, plug the hose and the car will be running even better. When you go to the inspection for the car, unplug it.

Steyr22 · Post by **Steyr22** » 21 Oct 2006, 10:47

Thanks for the reply.

I am not sure what it does but it has 2 wires that go to it. There is a picture in my manual that looks like what the wires connect to but it does not say where it is except for being mounted in the block.

I have uploaded a picture to here http://users.tpg.com.au/lesliecl/

There is a temperature sender at the location you mention (one wire only) next to the vacuum thermal switch (for the EGR?). Is it near any of these?

I have replaced the head gasket and am now confounded by the jig-saw puzzle. It took me days to find the control pressure regulator for the EFI.

This is the last piece of the puzzle that has not been reconnected.

LaRy · Post by **LaRy** » 21 Oct 2006, 11:08

The thermal timer I talked about has two tiny rubber hoses for vacuum and is definitely not electric. This is a system used together with carburettor, but I am rather shure they use the same thermal timer also together with injection systems.

Steyr22 · Post by **Steyr22** » 21 Oct 2006, 11:17

Yeah, that's the vacuum thermal switch that I mentioned near the temperature sender not the termal timer switch which is more like a temperature sender.

Don't worry, I had to hunt down a working car to find out where the vacuum lines went! I may have to do the same for the thermal timer switch, but it is not easy with the car off the road.

Post by **billofdurham** » 21 Oct 2006, 11:47

The thermal timer in your picture is the unit which controls the cold start injector. It is under the intake manifold at the rear of the engine.

Bill.

Steyr22 · Post by **Steyr22** » 23 Oct 2006, 05:27

Thanks.

I got the same information today and was going to post the location, but I still cannot find it so tommorrow I'll be taking the inlet manifold off (again) to connect the wire.

I can't believe how difficult it has been to find!

Steyr22 · Post by **Steyr22** » 31 Oct 2006, 16:44

I finally bit the bullet and removed the induction manifold to find the damn thing (new gaskets and all

)

It is located at the five O'clock position immediately below the number 4 inlet manifold.

Note: It cannot be seen from any angle except with the use of a mirror (and even then is hard to see).

Thanks for the help.