Immobiliser just had my mg zr put on a machine as it doesnt always start, the machine says that the immobiliser is the problem as it is constantly on, off, not one or the other. when it wouldnt start the other day my friend put a screwdriver across the starter. i have also noticed a very high pitched noise coming from the engine, the man with the machine says its the ecu not cutting off, please help
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If it is a radio security code you need then a trip to an MG dealer is the best and easiest option.they use id from the vehicle. Sometimes from the radio case itself.Hope there is a dealer near your area.
because you have changed the head gasket I am thinking that there is a valve timing problem. If at any stage you turned the crank when the head was removed and refitted the head and cam shaft
and turned the crank to align the marks then there is a distinct possibility that there is valve damage. Do a compression test. Turning an engine by hand is difficult because each piston will have compression.
you may have sucked up dirt from the fuel tank when it ran it of gas. replace the fuel filter to see if this works. also the fuel pump may have a plugged pickup filter on the pump itself or the pump may have just died, not supplying the proper pressure in the system.
A very common fault this one, that is easily fixed. On older cars the heater fan speeds one and two often fail, due to the resistors burning out. This applies to most of the MG Rover cars of the 90's and 2000's so Rover 200, 25, 45, 400, MG ZR, ZS, MGF and MGTF.
Buy three bigger resistors of value 0.68 ohm and wattage 10 watts, from eBay or an electronics store.
Most of the video here is an MG ZR, apart from the MG TF at the start but it is similar for all models. The MG TF took marginally longer due to the slightly more hidden location of the resistor pack. You need to remove a short vent pipe as well as the glovebox cover on that car.
It is available in hard copy by Haynes for about
18.00 or on ebay for less. It is not available electronically unless
you het hold of a copy of the rave from ebay on a cd. If you need to
know something specific message or just ask on here: MG ZR / 25 / 200 & Streetwise
There are lots
of MGR experts here.
Hope this helps.