Ford KA, KA2, KA3 (1996 - 2008) - 02 1.3 Heater problems | Technical matters | Back Room Forum

Thu 2 Oct 2008 14:31

02 1.3 Heater problems - taffglam

I have read the threads relating to heating problems. It appears that cold air only is attributed to a faulty control valve under the bulkhead. This was a problem 8 months ago and a new control valve rectified the problem. However, I now have hot air only. I have checked the voltage at the control valve and get +12 V irrespective of the positioning of the heater control dial. Am I right in assuming that the valve is fully open when +12V and fully off when 0 V. If this is the case, is a new dial the answer. Many thanks in anticipation of a response.

Reply | Report as offensive | Link

Sat 4 Oct 2008 21:10

02 1.3 Heater problems - Screwloose

The valve is driven by fast pulses of 12 volts; you really need an oscilloscope to see them properly - although a meter usually shows a small variation.

Reply | Report as offensive | Link

Tue 14 Oct 2008 13:11

02 1.3 Heater problems - taffglam

Thanks Screwloose - your information was invaluable. I took a gamble and replaced the valve, although the old one was only 8 months old. Heater now working properly, but for how long? If this valve causes so many problems why do not Ford sort it out?

Reply | Report as offensive | Link

Tue 14 Oct 2008 13:39

02 1.3 Heater problems - jc2

I've owned a number of KA and driven more-never had any problems but if I adjust the heater valve I always go to either fully open or fully closed as I change the setting-don't know if this is why I don't get problems.

Reply | Report as offensive | Link

Related questions

I've been told my new car will need half a litre of oil every 500 miles - is this correct?

I bought a 2018 Citroen C3 Aircross 1.2 petrol in January 2019. I have now topped up the oil three times since January. A Citroen mechanic told me that I’ll need to top up 500cl every 500 miles. This seems...

Do you have a standard letter format that I can use to reject a one-day-old defective new car?

Mercedes-Benz GLC steering issues - is this common?

I have a 2016 Mercedes-Benz GLC on lease. When the steering is on full lock the car starts to crab and makes an awful noise. Mercedes says this is a characteristic of the car and that to solve the problem...

Rejecting a faulty new car - what are my rights?

I bought an Audi A5 from Macclesfield Audi on the 21st of November, after a week I got a 'gearbox malfunction' warning while driving, the message also stated the car was okay to drive with reduced capabilities....

Ask Honest John

Sell Your Car

Real MPG

Fuel Calculator