Ford Scorpio Forum - Print Page


    
      
        Ford Scorpio Forum
        (https://www.fordscorpio.co.uk/cgi-bin/yabb/YaBB.pl)
      

        General >> Give/Need advice to/from others >> Centre Vent Temps
        
(Message started by: Tenfut on Nov 19^th, 2010, 7:59pm)

Title: Centre Vent Temps
Post by Tenfut on Nov 19^th, 2010, 7:59pm

Driving at about 50 MPH with a warm engine I used a digital thermometer on the centre vents, fan on slow but not auto and got the following readings:

Display on:

HI -- 76C
29 -- 68C
28 -- 54C
27 -- 40C
26 -- 29C
25 -- 18C

Anything below and I got cold air.

Is this telling me anything?

Tony

Title: Re: Centre Vent Temps
Post by rich1 on Nov 19^th, 2010, 8:02pm

not sure , but when i put my heating on my temp gauge starts to drop . is this normal ?

Title: Re: Centre Vent Temps
Post by Highlander on Nov 19^th, 2010, 8:10pm

Did you leave it for a while between measurements Tony?

Does the temperature from the vents reduce/increase to reach the required temperature over time?

I would think the fan on the slow setting will be making it harder for the sytem to achieve the set temperature as quickly as it could if on auto.

Those figures suggest the cabin temperature was around 25-26 and that the increase in setting resulted in higher temp being produced from the vents.

If it were sitting at slightly above 25 then setting it to 25 would have produced the colder air?

It sounds like its running ok, possibly the temperature sensor could do with a clean, they draw in a tremendous amount of dust which may be affecting its operation.

Title: Re: Centre Vent Temps
Post by Tenfut on Nov 19^th, 2010, 8:20pm

Hi Stuart

No I was altering the setting fairly quickly, from start to finish over about 3 miles.

Where is the temp sensor to be found?

Tony

Title: Re: Centre Vent Temps
Post by Highlander on Nov 19^th, 2010, 8:24pm

Between the two large dials, blow it out from the back of the panel

http://www.fordscorpio.co.uk/aircon.htm

Quick tip : When you remove the panel to blow it out do it OUTSIDE the car!! ;D

Title: Re: Centre Vent Temps
Post by Highlander on Nov 19^th, 2010, 8:26pm

on 11/19/10 at 20:02:07, rich1 wrote:

not sure , but when i put my heating on my temp gauge starts to drop . is this normal ?

Shouldnt drop significantly Rich, is your thermostat ok? have you got one? ;D
does it take a while to warm the engine up?

Title: Re: Centre Vent Temps
Post by rich1 on Nov 19^th, 2010, 8:44pm

engine seems to warm up normally. drops gradually but goes all the way down. doesnt seem to have any affect , but worried that something nasty could happen!!

Title: Re: Centre Vent Temps
Post by Pegasus on Nov 21^st, 2010, 4:31pm

Hi Tony,
centre vents on mine start off with warm air then after a while will start to blow unheated air - could be because sensor reckons you've reached required temp.

Rich: with temp guage - assuming it's working ok - have you checked the inlet & outlet pipes for the matrix. If all's ok (no blockages) they should BOTH be hot (just about gripable for a few seconds).
I've got issues with my matrix and occasionally the guage alternates between ok (middle of range) to low.

Paul

Title: Re: Centre Vent Temps
Post by Malcolm73 on Nov 21^st, 2010, 5:47pm

A year or so ago in an attempt unblock my heater matrix when I used hot radiator flush pumped exclusively through the heater matrix I also later checked air vent temperatures.

The heater matrix has first call on any circulating water and the air vent temperature is apparently very dependent on the engine load.

Going down hill and the engine fuel consumption and heat output falls to next to nothing and so the air vent temperature also falls, conversely the air temperature increases dramatically when the engine is under load and burning high levels of fuel

Title: Re: Centre Vent Temps
Post by Tompion on Nov 21^st, 2010, 9:48pm

Can’t speak for other models, but with regard the 2.3 the coolant goes solely through the matrix until the stat starts to open then it goes through the radiator & the matrix via separate routes – so not really “first call”.

I’ve just changed my matrix & stat & the needle on the gauge goes to the centre & stays there, the heat output doesn’t vary with the load.

Paul, the behaviour of the centre vents cooling before the outer vents is down to some deflectors fitted on the flaps over the matrix it causes the centre vents to cool first for some reason (as the flaps move to allow more cool air to blend with the hot air as it gets up to temp), this is less apparent when the distribution is set to windscreen/footwells (although that wasn’t so before I changed the matrix & recovered the distribution flaps).

Title: Re: Centre Vent Temps
Post by rich1 on Nov 27^th, 2010, 9:17pm

how bizarre , after posting that my gauge drops when i put the heating on it seems to have cured itself ??
went to gozz land today(peterborogh) which is a 165 mile round trip,and the gauge stayed bang centre , im happy but at a loss to explain it !! blockage maybe thats cleared itself????

Title: Re: Centre Vent Temps
Post by gozz on Nov 27^th, 2010, 11:16pm

rich.
Next time you're up gisa shout,I'll chuck these pesky 12 spokes in yer boot gratis !
GOZZ.