temperature gauge -1.8 16V

[deag 0]

Hi,

At the possibility of opening a can of worms...

 

I changed my engine coolant a while back.

As far as I know, I did it by the book, replaced the anti-freeze to roughly 45%.

But ever since, my water temps have been reading about 70 deg. for normal running. Oil temp seems fine (low 90s most of time).

Recently, I was stuck in traffic on a sunny day, so both temperatures went up about 20 deg before cooling kicked in.

However, water was always 15 or 20 degrees shy of oil.

I can't figure why that should be!

Could the sensor be offset?

Any other suggestions?

 

1990 1.8L 16V engine.

 

 

Thanks,

 

deag.

[Walesy 0]

tempriture sender switch maybe?

[deag 0]

How would I tell?

Where is the sender switch?

[aide 0]

are you certain your radiator fan isn't running all the time?

[carpy25 0]

dizzi side of the engine above the gear box 3 possibly 4 senders (been years sence i changed mine) grouped together some check temp for cold start etc couple of senders the same +one larger one

just changed the temp gauge sender on my golf started reading low then stopped altogether on the golf the wire going to it was yellow/red may be the same on the corrado i will check tonight for you if i remember new sender was about £10 -£12 from vag easy change tapered thread so dont tighten up to much and make sure the engines cold

[aide 0]

carpy's dead on, there's three temp senders and the thermotime, it's one of the smaller ones (one halo head other two fish tails) but I don't know which :)

[rug 0]

Mine does the same thing! (although I haven't changed anything)

 

Takes quite a while for the temp gauge to move up, and when it does, barely goes over 70 degrees. Oil goes up to roughly 90. After 20 min i heavy traffic, temp goes up to 90 and oil a little higher, 95ish. Seems to stay around 90 in traffic, so I was suspecting a stuck-open-thermostat.

 

But you guys seem quite sertain these problems are the sender?

 

/Carl

[Walesy 0]

mine was doing what you guys are explaining...i changed my temp sender switch ...and it sorted it!!! good luck

[Supercharged 2]

Yep, they under read with age - change it..

[carpy25 0]

Checked last night and the wire colour is Blue /yellow going to the gauge sender

 

 

Rob

[deag 0]

Thanks guys, I'll have a look.

 

deag.