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Own an MG Rover built after August 2003? Is one of the following not working:
Horn? Drivers electric window? Central Locking? Fog lights? Intermittent wipers?
It is very likely going to be one or several of the Pektron relays in the SCU unit that have gone. The relays are readily available for about £5 each on the web. It can all be fixed in under a day with some soldering tools, sockets, patience and perseverance.
Such a shame one small component, not even made by Rover, have just a detrimental effect on electrical reliability.
Here we fix a 2004 MG ZR but the Pektron relay are also used in the MG ZS, Rover 25 45 and MGF, so the general instructions are also applicable to them. Just the location of the SCU unit will vary.
On the MG ZR with a/c most garages will say the a/c has to be degassed etc (more cost) but here we leave the a/c connected. The SCU unit can just about be wiggled out from behind the a/c evaporator(radiator) unit with it still connected if some of the pipes clamps are loosened. https://youtu.be/sQeFa5v5DXM
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.
dear friend-it sounds like you have burst a heater hose,i would seggest that you fil the water and then pressure test the system to find the problem.if it did not get to hot then she will be ok.
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