Hi guys,

Can anyone tell me which connection goes where?

See pic below.


1. On the left-hand side there is a small cyclindrical connection that I assumes fits onto the oil pressure sensor?

2. On the right-hand side there are three 3-pin sensors. One I assume for the TPS, one for the TDC and one for something else. The sensors are numbered but not sure where they go

 

no doubt someone can recognise it but it may help saying what car its from/for

 

Hi sorry, its from a Cossie Saph 4x4.

 

Third one the right is probably knock sensor.
Is the cylindrical one on the left next to the connector for the coolant temperature? Then oil pressure is very likely.
Or connect the wiring loom and then measure resistance to the engine connector.
That should tell you which connectors they are, except for oil pressure.
http://www.bigturbo.co.uk/main6.htm

 

On the right there are 3. 2 white and 1 black. I am assuming the black one goes to the throttle position sensor below the throttle body. There are then 2 white left; 1 is marked with the number '1' and one is marked with the number '7'. Which one goes to the knock sensor and were does the other go?

Also, on the inlet beneath the air temp sensor there is an outlet for a pipe....is this for the breather system?

 

Won't be oil pressure as this is part of the car loom at least it is on other Sierras can't see they changed it for 4x4

I would think that is something unique to 4x4 loom like A/C perhaps or something as I have never seen it on a 2WD loom.

The pipe you are likely seeing is a take off for a dump valve etc. You should have another one the same which the fuel pressure regulator connects to, unless you mean underneath the plenum where there is an outlet for a breather.

The square type on the right are for the CTS, Crankshaft Position sensor (TDC) and ACT, third is most likely knock sensor.

The TPS and MAP sensor are the ones in the middle by the looks of it, the TPS being the red one and the black one above for the MAP sensor (These have three wires so are impossible to confuse with the aforementioned sensors).

Martin

 

Thanks Marty. The brown one in the middle is for the ACT and the other must be for the MAP as it is the only one that would reach. The ones on the right must be TDC, TPS and distributor surely? If so which is which?

 

OK here's a picture with the loom fitted to the car.

1 white must go to TDC....but which one?
1 white must be the knock sensor...but which one?

Does the MAP not connect to the ECU loom?

Black one goes to dizzy????[/IMG]

 

CPS is one of the white coloured ones, has a mind blank at the time but one will be for the ISCV NOT the knock sensor as I stated in my earlier thread, which is also a white 2 pin connector.

TPS will most likely be the red one as they are colour coded and will have 3 pins opposed to two. There is another one for the dizzy phase sensor this is a black 2 pin connector.

If your car is a early 4x4 with a red cam cover (YBJ) then this never had a knock sensor AFAIK, it's only the green cam cover (YBG) that did and would need a long wire as it's at the bottom on the right side of the block.

Martin

 

Hi Martin.

I have red top 91 saff. It has a knock sensor.
Hope this helps.

 

Ok thanks. Any chance someone can unplug there CPS and tell me what number is stamped on the white plug? 1 or 7? Still don't know which plug is CPS and Knock.

Thanks!