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Hi Guys,
New member, first post. Please go easy on me.
My daughters 1999 G13BB Auto has had a big drop in power.
It has good compression, spark and fuel pressure.
When I check the fault codes it shows a long list including most of the sensors on the engine.
It has a new MAP sensor, new Cam angle sensor and the rest seem to be working correctly.
It seems like the common link between the sensors throwing codes is the main relay or it's wiring.
There are 4 relays in the engine bay. A manual I found said that the one closest to the cabin should be the Main relay, but the wire colours don't seem right.
Has anyone had a similar problem or does anyone have a diagram showing which colour wires the main relay should have?
