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        General >> Problems >> temperature indicator jumping down
        
(Message started by: Intention on Jan 27^th, 2007, 12:23am)

Title: temperature indicator jumping down
Post by Intention on Jan 27^th, 2007, 12:23am

Hi,

my temperature indicator is jumping down once the motor is in normal temperature - I know it sounds funny. ??? It never goes up though. I have checked water for overpressure / low several times and it doesn't seem to be the issue. Anyone have an idea?

Thanks, Alex

Title: Re: temperature indicator jumping down
Post by Spannerdemon on Jan 27^th, 2007, 8:17am

This is a known 'fault' with the Scorpios.

See: HERE (http://www.fordscorpio.co.uk/coolanttempgauge.htm)

Just live with it, or do the repair. Alternatively you could
try the instrument re-set. HERE (http://www.fordscorpio.co.uk/instreset.htm)

Hope this helps you. :)

Title: Re: temperature indicator jumping down
Post by scorpio_man on Jan 27^th, 2007, 10:23am

hi there

more often now it's the sensor that's gone. see the replies to this topic. (http://www.fordscorpio.co.uk/cgi-bin/yabb/YaBB.pl?board=Advice;action=display;num=1169550587)

hth

Title: Re: temperature indicator jumping down
Post by Intention on Mar 4^th, 2007, 4:03pm

Hi, it's been a while since but my problem is still there. I had a look at it for 8 weeks now and can't believe this unusual behaviour. Let's start at the beginning, 27/01 - everything was fine till my fiancee had an accident - yeahh, I know, this car is too heavy for girls ;D. After I found the radiator was leaking, the needle began jumping to zero and back to where it was - after bringing it in Ford charged me 440 EUR to replace it >:( when picking it up at least it was running but here we go, 4 weeks later the jumping started again - I didn't care till last week - now it even jumps to just under the red and back again, if that is the real temperature then I presume the motor is getting far too hot. I tried the instrument re-set and got the following:

cold - 255
warming up - suddenly needle jumps to middle of normal band, 125
1/2 miles later - needle a bit above middle, 110
full throttle up a hill (min. 1 mile) - 98-102 constantly
after the run @home left in idle - shows 70 as soon as tachometer goes into idle, jumps up to 110, back to 50 and stays at 60-68
if I hit the gas a little same jumps again, stays at 60/68 afterwards

That was my little "test" - hope someone can help identify the issue as I have no clue ;D

ohh - I found that I have air in the basin every 1-2 weeks, when cold I open it and close it again --> fine. The low water LED comes on usually before I just open it to let the air out (I dont need to put water in tho..)

PLEASE HELP!!!

Title: Re: temperature indicator jumping down
Post by scorpio_man on Mar 4^th, 2007, 4:30pm

hi there

still points to the temp sensor being faulty, imo.

seen it a few times now. easy enough to change.

just remember to leave a small gap when screwing the sensor back into the manifold.

Title: Re: temperature indicator jumping down
Post by Intention on Mar 4^th, 2007, 8:16pm

Hey, YAPP I'm a newbie!!
Although the germans designed the car (as far as I know) they do not all know where the temp sensor is...so..how do I replace it? I presume taking the old one out and putting a new one in ;D

Alex

Title: Re: temperature indicator jumping down
Post by Intention on Mar 4^th, 2007, 8:19pm

oh just out of interest..does the temp sensor from a 2000 DOHC fit into my cossie? I could get a spare one of those...and I know the Ford dealers around are taking ages to get me parts...

Title: Re: temperature indicator jumping down
Post by scorpio_man on Mar 4^th, 2007, 8:34pm

hi there

what engine is it?

Title: Re: temperature indicator jumping down
Post by Intention on Mar 4^th, 2007, 9:01pm

'96 2.9 24v ;)

Title: Re: temperature indicator jumping down
Post by scorpio_man on Mar 4^th, 2007, 9:19pm

hi there

page 9 (http://www.fordscorpio.co.uk/manual/engines/24v/24VCylHeads.pdf)

hth

Title: Re: temperature indicator jumping down
Post by Intention on Mar 4^th, 2007, 9:51pm

Thanks very much scorpio_man! will work on this next week and see how it goes. is it correct that I don't need to take the earlier steps as I don't take the cyl heads off? Alex