Overheating ... Or Not?

[mobile armchair]

My 1.9Tdi Galaxy says it has a problem ... but does it?

 

Outside temp has hit 30 degrees here today. :angry: After 5 mile journey, parked car (in shade) for son's sport training, returned 2 hours later. Turn on, all warning lights go out, fire her up, and temperature warning saying "STOP check coolant" comes on. Underbonnet check reveals no water leaks from hoses or radiator, oil has no visible signs of water contamination, coolant level where it should be in expansion tank, unscrewing cap gives usual gasp of air, but no change in level, water in expansion tank is clean and lightly orange coloured as usual. Switch on again, same problem. Carried out all same checks again, decide to drive. Temp rises quickly as usual to 90 degrees mark on gauge, stays there, doesn't move, fan cuts in very occasionally in traffic queues, car behaves impeccably. Carried out same checks while engine by checks. Thought if there was gasket, water pump, airlock, thermostat, cooling fan or incipient leak problems, driving home in 30+ degrees in city traffic would have found the problem.

 

Should also say in 16 months I have not put in a drop of water in the coooing system, which has been drained and refilled about 18 months ago in line with service schedule by selling dealer.

 

I'd say the hot weather is messing about the warning light system ... have I missed something and am about to blow engine apart? :angry:

[Bigjeeze]

Mine has done this a couple of times - after services etc. It's usually the electrical connector on the Water container- See if you can reach it to ensure it's fully home.

 

That usually does it for me.

[mobile armchair]

Ta Bigjeeze

 

I am well reassured, you are a star, what a good site this is!

 

Engine compartment too warm to go in now, I'll try it tomorrow morning when it's cooled, and post up whether it worked or not.

 

:angry:

[mobile armchair]

Will have to unbolt bits and pieces of trim and the tank itself to have a look under the expansion tank I suspect ... can't see or feel any wires. But all the water is still in there and clean, so it must be the sender unit connection.

 

Shouldn't take me long when we've done the team bus to basketball bit.

[mobile armchair]

:lol:

Unbolted the expansion bottle so I could reach the sender, disconnected it, cleaned the connection, put it back firmly, started her up, no more warning lights.

 

Least if it happens again, I know where the fault is.

 

Ta Bigjeeze.

 

Just imagine the bill if I'd taken it in to dealers ...