Author |
Topic: FAULTY HBC? (Read 567 times) |
|
Biggles
Junior Member
98 2.3L 16V auto Facelift Ultima, Silver, 120k
 
Posts: 53
|
 |
FAULTY HBC?
« on: Aug 31st, 2007, 9:04am » |
 Quote  Modify
|
Hi All,
I know this is probably a common, reccurring question,
but can any one help.
I used to have a reccurring 57 code showing whenever I interrogated the cc system but never having had any problems but just reset it anyway.
I now find that I have no hot air coming in when I put it to HI and have an 07 fault on interrogation which keeps coming back even after a reset. I know the weather is mild at the mo but I would have thought that it should give me warm if not hot air on the chilly mornings set at a high temp.
The fans seem to be behaving normally, just no warm air. Does the HBC contol the fan speed only or does it contol the entry of hot water to the matrix or hot air through the flaps.
My question is, would a new HBC likeky to cure the problem?
Peter (Biggles).
|
|
 IP Logged |
|
|
|
JG2
Full Member
Posts: 677
|
|
Re: FAULTY HBC?
« Reply #1 on: Aug 31st, 2007, 9:37am » |
Quote Modify
|
the HBC just controls fan speed nothing else.....no point in replacing if no hot air
if no hot air on I assume the matrix is blocked or could be the climate control unit though doubt it.
|
|
IP Logged |
|
|
|
Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
|
|
Re: FAULTY HBC?
« Reply #2 on: Sep 1st, 2007, 1:59am » |
Quote Modify
|
Nothing controls the entry of hot water to the matrix, it just flows through constantly...well it should do.
Check that the matrix outlet pipe is as hot as the inlet pipe....if not, then the matrix could be blocked/restricted or have an airlock 
|
|
IP Logged |
|
|
|
Biggles
Junior Member
98 2.3L 16V auto Facelift Ultima, Silver, 120k
Posts: 53
|
|
Re: FAULTY HBC?
« Reply #3 on: Sep 11th, 2007, 4:18pm » |
Quote Modify
|
Just checked codes again and got 51, 52, and 57 in one hit.
|
|
IP Logged |
|
|
|
Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
|
|
Re: FAULTY HBC?
« Reply #4 on: Sep 11th, 2007, 4:25pm » |
Quote Modify
|
The first two codes point toward a faulty SATC or control panel & 57 is still an HBC fault.
Here's the code list....scroll down about half way......
http://www.fordscorpio.co.uk/ccreset.htm
|
|
IP Logged |
|
|
|
Biggles
Junior Member
98 2.3L 16V auto Facelift Ultima, Silver, 120k
Posts: 53
|
|
Re: FAULTY HBC?
« Reply #5 on: Sep 12th, 2007, 7:04am » |
Quote Modify
|
Anyone have an SATC panel going for sale, or know where I can get one.
Peter.
|
|
IP Logged |
|
|
|
Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2932
|
|
Re: FAULTY HBC?
« Reply #6 on: Sep 12th, 2007, 9:16am » |
Quote Modify
|
Have you checked the ribbon cable is tight behind the control panel - you get codes 51 & 52 if the panel is removed & ignition turned on, so possibility of poor connection?
|
|
IP Logged |
ABS multiplug wheel sensor pins MK IV or MK 20
|
|
|
Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
|
|
Re: FAULTY HBC?
« Reply #7 on: Sep 12th, 2007, 9:40am » |
Quote Modify
|
If the ribbon cable is loose, doesn't the blower just blow at full whack  ....well it did on mine
|
|
IP Logged |
|
|
|
Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2932
|
|
Re: FAULTY HBC?
« Reply #8 on: Sep 12th, 2007, 10:20am » |
Quote Modify
|
Certainly the fan flat out is a common symptom of a loose cable, but with 34 wires in the cable I guess it could cause other problems – at least worth checking before getting a replacement.
|
|
IP Logged |
ABS multiplug wheel sensor pins MK IV or MK 20
|
|
|
Biggles
Junior Member
98 2.3L 16V auto Facelift Ultima, Silver, 120k
Posts: 53
|
|
Re: FAULTY HBC?
« Reply #9 on: Sep 12th, 2007, 2:59pm » |
Quote Modify
|
The codes 51 and 52 hae now gone after reset. As you say the appear after the ribbon has been disconected, didn't know that at the time, so that explains them.
Overall i think the fans and atc seem to be functioning as they should but just no heat. Apart from the prospect of the matrix being blocked (ah!!!!!!), is there anyhting else that could be stopping the hot air, i.e. flaps that should be opening and allowing the hot air through the vent system?
Peter.
|
|
IP Logged |
|
|
|
Biggles
Junior Member
98 2.3L 16V auto Facelift Ultima, Silver, 120k
Posts: 53
|
|
Re: FAULTY HBC?
« Reply #10 on: Sep 12th, 2007, 3:42pm » |
Quote Modify
|
Hi all,
Think I've found the problem and all is well. 
Found what seemed to be the matrix pipes at the bulkhead and found one was very hot (drivers side)and the other not.
Gave both pipes either side of the engine a few good squeezes and it seemed to get a bit hotter (passenger side). Carried on for a good few minutes and now seems nice and hot. Upping the cabin dial to Hi I now have hot air back. Must have been an airlock, I'm hoping. Never had air lock problems before.
Thanks for all the feedback folks.
Peter.
|
|
IP Logged |
|
|
|
pete from Hull
Senior Member
Non Scorpio at the moment, but still interested...
Posts: 1365
|
|
Re: FAULTY HBC?
« Reply #11 on: Sep 12th, 2007, 4:31pm » |
Quote Modify
|
Be hopes it wasn't scale build up in the pipes cos you will now have broken it up and it will be in the matrix 
It would be an idea to take the pipes of and give the whole system a good flush out, squeeze all the pipes and you may be amazed at what comes out.... 
hth Pete
|
|
IP Logged |
Bring back fair wages.........
|
|
|
Biggles
Junior Member
98 2.3L 16V auto Facelift Ultima, Silver, 120k
Posts: 53
|
|
Re: FAULTY HBC?
« Reply #12 on: Sep 17th, 2007, 3:13pm » |
Quote Modify
|
Where is the best place on the system to remove the pipes for the best flush through.
Peter.
|
|
IP Logged |
|
|
|
pete from Hull
Senior Member
Non Scorpio at the moment, but still interested...
Posts: 1365
|
|
Re: FAULTY HBC?
« Reply #13 on: Sep 17th, 2007, 3:45pm » |
Quote Modify
|
Disconnect both the pipes on the heater matrix and flush it through both ways.
Remove the Thermostat and the bottom hose on the radiator, flush engine and rad both ways.
While flushing, if you gently squeeze all the pipes it will loosen any scaly deposits from the inner walls.
Fit a new stat and reconnect everything and fill with water, go for a longish drive and then empty the system again from the bottom hose.
DON'T FILL HOT ENGINE WITH COLD WATER
Now fill with 50/50 coolant and run the engine to the working temperature with the top still off the expansion header tank, this will allow any air to escape. You should be carefull not to splash water all over any electrics during the procedure or it could cause more problems.
hth
Pete
|
|
IP Logged |
Bring back fair wages.........
|
|
|
|
Home
Help
Search
Members
Login
Reply
Send Topic
Print