P38A Aircon problem.

mikerajjers

Well-Known Member

Posts

1,467

Location

Bedford UK or Trnava SK

• Feb 8, 2021

• #1

Not really a major problem at this time of the year, but thought I'd start looking into it before summer.

My aircon only cools when the digital temperature is at 16C. Anything above that it does not. When at 16C it is nice and cool straight away so the compressor etc seems to be OK. I think it may be a problem with the controls. Any ideas what I could try looking into, mending or replacing?

Cheers

 

Marshall8hp

Well-Known Member

Posts

297

Location

Sydney

• Feb 8, 2021

• #2

It may be that the little aspirator/temp sensor, under the clock, needs taking out and cleaning. The clog up with crap over the years.

 

Dopey

Well-Known Member

Posts

6,201

Location

Heathrow

• Feb 8, 2021

• #3

Marshall8hp said:

It may be that the little aspirator/temp sensor, under the clock, needs taking out and cleaning. The clog up with crap over the years.

Click to expand...

Easy to replace, I did mine a long time ago, cant remember how much they are

 

mikerajjers

Well-Known Member

Posts

1,467

Location

Bedford UK or Trnava SK

• Feb 8, 2021

• #4

Cheers, I'll give it a go. Need to sort out some other things first like a dead battery and leak in the air suspension. I've bought a compressor rebuild kit as well.

 

pwood999

Well-Known Member

Full Member

Posts

3,943

Location

Near Heathrow.

• Feb 9, 2021

• #5

Also check the other sensors, as well as the aspirator fan

• Heater Core Sensor (water temp sensor clipped onto the pipes from the engine.)
• Evaporator Sensor (pushed into rubber grommet at the back right near the evaporator)
• Solar Sensor (top middle of dash)

HEVAC uses them all to decide how to deliver the temp you request.