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        General >> Problems >> No Heat or Blower motor? HBC, Relay, Matrix faulty
        
(Message started by: hopper on Dec 24^th, 2008, 9:20pm)

Title: No Heat or Blower motor? HBC, Relay, Matrix faulty
Post by hopper on Dec 24^th, 2008, 9:20pm

Hi Again,

When i purchased the car last week the seller says that work was carried out to replace the water hoses in the car and has a full receipt for the work carried out. He did not notice that since the work was carried out the hot water does not appear to run through the heater? Also that when he fitted the 5000 series radio he touched the casing with the screwdriver causing a fuse to blow and since then the blower motor no longer works. Is possible that the reason there is no heat is that the blower does not work but that the water is still circulating through the matrix? I have reset the CC as per the notes listed in the fault finder but the blower motor fails to start, I have not changed the relay in behind the glove box as i went to fords today to get the relay and they wanted wait for it £57 for the relay? This must be a mistake the normal yellow relays in the central fuse box are normally £8 from ford. I have also read that the HBC maybe the fault. Can anyone confirm that when they have changed the HBC unit then heat and the blower have then started to work again. I know that it appears that this car is a bit of a dog but I have had 2x Scorpio Cosworth 24v previously and this one has an incredible engine and gearbox I thought my 1st Scorpio was quick but this one is phenominal. Even in economy the kickdown is impressive and in sports mode it has brought the biggest smile on my face ever. It left for dead an M5 BMW that was tyring very hard to keep up a £60-70k car compared to £450 that I paid for this one.

Regards Chris

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by Simmo on Dec 24^th, 2008, 10:09pm

Have you checked fuse 29 in the central,drivers side, fusebox because this covers the heater blower motor?. It is possible that the system is airlocked and thus the water is not flowing through the heater matrix. Have you checked the inlet and outlet hoses to the matrix?.

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by hopper on Dec 24^th, 2008, 11:02pm

Hi,

Yeah I've checked all the fuses but have not checked the pipes at the entry and exit of the heater unit in the engine bay hope to do that on Boxing Day on lunch break I'd be shot if I do it tomorrow being Xmas day but working on Boxing day. Fuse 29 ok but i will go through all the fuses on Boxing day as over a cars history I have found that a cars electrics can get re routed by garages so i'll check both central and auxhillary fuse boxes if any are blown and it solves the problem i'll add it to the thread for other members information

Regards Chris

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by Highlander on Dec 25^th, 2008, 8:03pm

on 12/24/08 at 21:20:59, hopper wrote:

I thought my 1st Scorpio was quick but this one is phenominal.

Chris could you PM me the VIN number??

Does it have any obvious modifications? turbos? different diff possibly?

Legend has it there were six 4.0 Scorpios prototypes built which according to Ford were then scrapped and not released into public domain although at least one has surfaced briefly in the past ;)

The engine will look like a standard 24v with only slight differences but it will give a hell of a kick!!

Dave Howard found one once but it was broken for parts by the time he realised what it was.
I am also on the trail of one built in 94 which I believe could also be one of the 4.0 six..

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by hopper on Dec 26^th, 2008, 1:30pm

Hi Simmo,

I've run the engine and with the water up to normal operating temperature and the inlet and outlet pipes are both hot so that is good news it should mean that there is water circulating through the heater matrix. I have also taken the wood effect dash out and removed the CC unit to replace a couple of blownn bulbs. Once I had fitted the bulbs and tested that they work I put the Dash back together and reset the climate control unit and got an error message number 52 I removed the ubnit again and reconnected the narrow pin connector as it appeared not to be sat quite right. Refitted the dash and reset the unit again this time codes 00 appeared as normal reset passenger side to 50 and then cleared the system to 00. That was my lunch break over so I still have to refit the Relay 28 blower motor fingers crossed the blower will work and I'll have a nice amount of heat. If the blower still fails to work and the fuse 29 is ok and the Relay 28 is ok does this only leave the HBC module and the Blower motor itself. Is there anything elce I may have missed?

Regards Chris

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by Simmo on Dec 27^th, 2008, 12:27pm

The details of how to test the HBC are listed HERE (http://www.fordscorpio.co.uk/hbctest.htm) so once the relay is in you could carry out that test. If the blower does not work after that take out the HBC unit and spray some WD 40 on to the actual motor which you can just about see through the opening. Gost had a problem with his fan motor and it was cured this way.
If you also go to THIS article (http://www.fordscorpio.co.uk/fanrepair.htm) and go to the last photo (click on it to enlarge) you will see the fan motor. When it is in situ all you can see is the actual motor as the 'Fans' at either end are concealed by the cover shown in one of the earlier photos. You will see the brass 'spring' in the photo and this area seems to be where the brushes etc are and that is the spot to try and reach. ;)

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by hopper on Dec 27^th, 2008, 10:15pm

Hi Simmo,

Thanks for the help and advice. I'm working Mon-Fri this week so will have to wait now until Saturday to carry out the checks.

Regards Chris

Title: Re: No Heat or Blower motor? HBC, Relay, Matrix fa
Post by hopper on Jan 9^th, 2009, 7:21pm

Hi Guys,

Solution to blower motor and no heat was what would appear to be a totally unrelated electrical issue but they are linked so it may be worth bearing this in mind as to other electrical gremlins. I read the article for making the sunroof switch illuminated and thought ok a good idea i'll convert mine as per the instructions. On stripping out the sunroof motor I noticed that there are 5 wires connecting in a multiplug connection, but 2 of them have been cut off and covered in black tape to isolate them. I thought this unnusual so used a new 5 pin multiplug connector and reconnected the 2 wires a yellow/white and a green/white. These 2 wires are shown to be for the Global opening/closing system. Once the wires were reconnected and the motor put back in I noticed that when the battery was reconnected the blower motor started up on touching the positive terminal on the battery. I completed securing the battery and then started the car, reset the CC as per fault diagnostic and the blower motor worked immediately. Once the car was up to temperature the heat also was circulated by the blower as well. I have now used the key to try the Global opening/closing system and the sunroof operates as it should but the windows fail to open or close so I have a little more work to check if the wires to these have at some time have also been isolated for some reason. It seems amazing that this could have caused the Blower not to function but as it is electrical there may have been a loop feeding back incorrectly but I now have a nice warm car and a wonderful blower circulating the warmth which is ideal with the cold weather that has now appeared across the country

Regards Chris