Exterior temp display and blowers

[RailwayRev]

I have an odd issue with the external temp display on my 1999 V70. It seems to be over reading considerably when the car is stationary, although it appears normal when moving. My last v70 didn't seem to do this, or if it did I never noticed.

Can this effect the climate control at all? I only ask as I know on some other cars it can (jag xjs being one).

The blowers on mine have developed an intermittent fault, everything works as it should and lights up, but at times the fan does not operate. I gave the internal temp sensor a quick blow out last night and nothing changed, but this morning all was working again.

It continued to work until I got stuck in traffic and the exterior temp gauge went up to 35 degrees. Once I was moving again and the gauge fell, they started working again albeit intermittently.

Is this two faults or just the one?

[Paul240480]

On my 99' V70, the fan was intermittent for a few months. Eventually it had the orange light(s) flashing indicating the fan was dead. Swapped it for a good 2nd hand one from a forum member and that was solved.
My outside temp sensor is dead. So can't say if the two are linked . Personally I'd say not ....
Good luck.

[RailwayRev]

Orange flashing lights after I started her up this evening, looks like it is the fan up the spout then.

[Cookeh]

Temp will increase and show erroneous values if sat in traffic due to heat buildup from engine and exhaust fumes around it. Its explained in the owners manual Sounds like you have a separate fan issue, though.

[Paul240480]

I would say so. Good News is swapping is a doddle compared to ph2 models. .
There is a Volvo /Saab breakers near Nottingham who will source you a good one and post if needed.
Good luck.

[RailwayRev]

Thanks for the advice, I will have to get hold of an owners manual and read it.

When I get a few minutes I will pull the fan out to find the part number and get one ordered. Living in Wales having working demisters even in the summer is a must.
Also black cars with black leather interiors heat up very quickly in the sun and while I can understand the benefits of saunas and realise their importance in Swedish culture, I have no desire to drive one.

[capt jack]

Heater blower is a doddle to swap, glovebox out, dash pad down, 3 or 4 bolts and out it comes. You don't need to pull it to see the part number. If you remove the glovebox you can very easily read the part number from the blower motor without dismantling further. It's important because several types were used, and they are not all interchangeable.

If the car has a passenger airbag then disconnect the battery 30 minutes before you start work. If the darn thing were to go off as you're heaving out the blower motor there'd be an instant reduction in the car's resale value!

There's a resistor pack too that might be worth swapping.

Outside temp reading is a highly moveable feast when stood in traffic.

Jack

[Alpine]

might be worth unplugging the outside temperature sensor and inspecting/cleaning, mine was full of water. It is behind and under the front bumper

[RailwayRev]

I finally got around to playing with the heater blower today. It appears that there is a loose connection in or behind the two pin socket. If the proverbial bit of fag packet is pushed in between the body of the motor and the socket/plug assembly it works.
Next step is to pull it out and dismantle to see if anything was come adrift inside that may respond to a quick wave of the soldering iron.