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1

Omega General Help / Re: Urgent help required help save a student!

« on: 18 November 2014, 11:03:17 »

I've had some problems with cam sensor on 4 pot myself.

The easy way (for me) to check if it is the cam sensor, is to remove the spark plug and touch any screw on the top of the engine head, so that you close the electric loop. Second person have to crank the engine (since there will be fuel in piston, please be careful), if there is a spark on the plug it means that the problem is with fuel (ex. fuel pump, fuse etc.) or timing (little possibility).

NOTE: do not touch the engine during test nor the spark plug. Hold the HV cable not the plug.

If there is no spark on plugs (check all 4 of them) than the most possible is the Crankshaft sensor. Of course it might be as well faulty DIS pack or wiring, but as I said on 4 pots the sensor is most possible.

If there will be spark on some plugs, the most possible is DIS pack or wiring from ECU to DIS or HV cables.

Furthermore, I know it is quite hard to change the Crankshaft sensor due to the AC compressor and I know that some change the sensor (I did it ) without removing the AC compressor, it is doable but the problem is the screw holding the sensor to the block, if some one did not tighten it, it might screw itself out and change the readings of the sensor.
Check it

2

Omega Electrical and Audio Help / Re: cooling fans relay

« on: 07 April 2011, 11:40:40 »

Hi!

First of all please forgive me grammar mistakes (I am not a English native).
You should check the relays, to do It, u will have to find it (check the post above), then when you remove it u will see a basic scheme on top of it. It will look something like this:

http: //img21.imageshack.us/i/przekaznik4254.jpg/

Because I can not give a link in a post please remove "space" after "http:" to access   the photo.

It is very simple peace of electric equipment. (this is different scheme, so numbers on your relay will be different) Between poles 86 and 85 there is an electromagnet, which close loop (87-30 and 87a-30) when a current is applied (of course to poles 85 – 86). This current comes from temp sensor which is located on right side (facing front of the car) of radiator, in X20XEV it switches ON when temperature is higher than 98 C.   

So if your fan does not start U should remove relay and apply a 12 V to poles (85 – 86) and then u should hear a click, it is quite loud so u will hear it for sure.

If u did it and it is OK, the next step will be to short cut the relay with your ignition on, which will basically mimic the temperature sensor closing loop, and should start fans. U can do this in two ways.

First u can simply use a peace of wire and connect connectors in which poles 87 and 30 should go (of course with relay out of the socket) (this will start only one fan) and then do the same with connectors 87a – 30, to start second one.

Second way is to remove the temp sensor and short-cut the two wires that goes to it. This should start both fans.
If none of above works it means faulty wiring or dead fan.