Odd A/C Problem
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Odd A/C Problem
Hello,
First off, my apologies if I am asking a question that has already been covered. I tried searching the forum but couldn't find anything relating specifically to what I am encountering, so thank you in advance for taking the time to read this. First the details:
Location: Bulgaria
Model: V70 2.5 TDi
Engine Type: D5252T
Year: 03/00 (P2 Platform)
Mileage: ~156K
So a few weeks ago, as I was driving I noticed that the A/C was blowing, but not cold air. I turned it off and back on again, but nothing. I noticed that the car was perkier than usual when the A/C is on (no power loss) when I got going from the stoplight. When I hit the gas to pass someone, I felt the compressor kick in and it started blowing cold air right away.
Important Note - The car idles @ 780 RPM. Since I bought the car (Import from Italy with 229K KM) the RPM's have never budged when the compressor kicks in. I thought that maybe this is normal for a diesel?
The above mentioned problem would happen on occassion, but now it has become much more frequent and does not rectify itself very easily if at all, or does so for a very short amount of time.
I have noticed that one of two things occur immediately before the A/C stops blowing cold air -
1. Compressor just stops working
2. When compressor kicks in, the RPM's will jump from 760/780 to about 850, and then back down. At first, this takes about a second. Soon after that, it takes 2 or 3 seconds to return to normal. When this is occuring, I noticed that if I press on the gas pedal @ idle it takes a tremendous amount of time for the RPM's to return to normal from 2K to 780.... way longer than usual and sometimes it seems to hang between 1 / 1.5K
Today we were driving back from Greece on holiday, and the A/C didn't work properly for more than 5 minutes at a time for the duration of the 6 hour trip.
Two things that I have noticed so far which seem to have an effect on the appearance and frequency of this problem are:
1. Outside temperature (was very hot outside today, about 38 -40)
2. Seems to be less frequent @ high RPM's
A few weeks ago I had the A/C system tested for leaks and the freon topped off. Of course, the problem didn't occur while I was there and the system was working perfectly.
Does anyone have any ideas on this one? Thanks in advance for any advice.
First off, my apologies if I am asking a question that has already been covered. I tried searching the forum but couldn't find anything relating specifically to what I am encountering, so thank you in advance for taking the time to read this. First the details:
Location: Bulgaria
Model: V70 2.5 TDi
Engine Type: D5252T
Year: 03/00 (P2 Platform)
Mileage: ~156K
So a few weeks ago, as I was driving I noticed that the A/C was blowing, but not cold air. I turned it off and back on again, but nothing. I noticed that the car was perkier than usual when the A/C is on (no power loss) when I got going from the stoplight. When I hit the gas to pass someone, I felt the compressor kick in and it started blowing cold air right away.
Important Note - The car idles @ 780 RPM. Since I bought the car (Import from Italy with 229K KM) the RPM's have never budged when the compressor kicks in. I thought that maybe this is normal for a diesel?
The above mentioned problem would happen on occassion, but now it has become much more frequent and does not rectify itself very easily if at all, or does so for a very short amount of time.
I have noticed that one of two things occur immediately before the A/C stops blowing cold air -
1. Compressor just stops working
2. When compressor kicks in, the RPM's will jump from 760/780 to about 850, and then back down. At first, this takes about a second. Soon after that, it takes 2 or 3 seconds to return to normal. When this is occuring, I noticed that if I press on the gas pedal @ idle it takes a tremendous amount of time for the RPM's to return to normal from 2K to 780.... way longer than usual and sometimes it seems to hang between 1 / 1.5K
Today we were driving back from Greece on holiday, and the A/C didn't work properly for more than 5 minutes at a time for the duration of the 6 hour trip.
Two things that I have noticed so far which seem to have an effect on the appearance and frequency of this problem are:
1. Outside temperature (was very hot outside today, about 38 -40)
2. Seems to be less frequent @ high RPM's
A few weeks ago I had the A/C system tested for leaks and the freon topped off. Of course, the problem didn't occur while I was there and the system was working perfectly.
Does anyone have any ideas on this one? Thanks in advance for any advice.
Member
Joined: Jun 2012
Posts: 32
Likes: 0
From: Santiago,Chile
It has happened to my V70 1998, check the gap in the compressor clutch, I do no remember exactly the maximun cleareance that it must have, it is around 0,5 mm , if it more than this you will have the problem you describe, Try looking in google for how to fix the gap in the compressor clutch , ther is some videos.
Junior Member
Joined: Aug 2011
Posts: 1
Likes: 0
Had the same issue about 3 weeks ago - blower for the A/C was cycling on/off, no rhyme or reason. I am an engineer BUT depend on my very good local Volvo-certified (but not dealer) repair shop. New blower, nice and cool in my 2007 V70 once again. Pricy repair, but we have had 90 F of hotter weather for 3 weeks now, and I need my A/C.
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