[a4anurag]

Originally Posted by sriramr9

What could this be related to, Do we need to suspect of a premature clutch wear? Kindly help. Otherwise pick up is fine, throttle response is good with a/c. Kindly help

This particular behaviour is normal. The ECU + clutch is struggling to keep the engine running and also transfer the power onto the road via the wheels.

With the A/C ON moving from standstill without throttle input will take the RPM nearing stalling zone hence the shudder. Idle RPM would be near 900 - 1000 (with A/C ON) so when you release the clutch without throttle the RPM will dip to ~500 so the car will stall but the ECU will kick-in the anti-stall.

Anurag.

[Perakath]

Originally Posted by an_and

Hey guys, a different kind of problem. In my innova, even though the flap is shut, I end up getting in outside air. What could be the problem. The air circulation flap switch is a little notchy but there was no problems till a few months back. The car is 5 years old and is nearing 100 K kms.

Hey, I have the same problem. With the same car of the same vintage. How did you resolve it finally?

[an_and]

Originally Posted by Perakath

Hey, I have the same problem. With the same car of the same vintage. How did you resolve it finally?

The service center guys said that they tightened some springs. The problem was resolved for a very brief period of time and has now come up again. I think the permanent solution would be to go to an AC mech and ask him to seal the inlet flap.

[Thumping Soul]

Hi Folks

I own a Punto 1.3MJD, since Jan'11 and has run 69000kms approx. Off late, the AC hasn't been cooling the cabin much. The SA suggests AC gas refill at 1200rs.

Could you guys please advice, as to what are the things i should watch out for? How do i identify the root cause for the problem? What could be the possible reasons and impact of certain resolutions?

Regards
Saurav

[sgiitk]

Originally Posted by Thumping Soul

Hi Folks

I own a Punto 1.3MJD, since Jan'11 and has run 69000kms approx. Off late, the AC hasn't been cooling the cabin much. The SA suggests AC gas refill at 1200rs.

₹1200n sounds Ok for an ASS. An independent should do it for about 800 or so. It is a R134a top up. If the ASS will empty the unit and then refill with the proper quantity, adding a bit of oil, then I will go for it. Also, check whether the refrigerant is included in the ASS price.

[Maverick79]

Mates,

Pls do suggest some good AC mechanic in and around Dilshuknagar in Hyderabad.

Mine is a '98 M800.
Off late, one of the pipe joints broke and MASS suggested to replace the entire A/C kit for INR 20K, citing compressor breakdown.

While leaving the premises post my regular service, SA came down to 15 K charges for replacement, but at a different place than MASS.

Looking for some good references to take a calculated risk.

Thanks regards,
Maverick79.

[sgiitk]

Originally Posted by Maverick79

Mine is a '98 M800.
Off late, one of the pipe joints broke and MASS suggested to replace the entire A/C kit for INR 20K, citing compressor breakdown.

It is almost certainly R12 which is now outlawed, so you have to change over to R134 (major compressor overhaul etc) and use the duPont replacement of R12. Also, at this age a compressor overhaul / replacement may be in order.

[Maverick79]

Originally Posted by sgiitk

It is almost certainly R12 which is now outlawed, so you have to change over to R134 (major compressor overhaul etc) and use the duPont replacement of R12. Also, at this age a compressor overhaul / replacement may be in order.

Yes Sir. You are right. I am informed about it. But the kit MASS charges is INR 20k+.
I will be getting not more than 35K if I sell it off. (More than 120 K kms on the Odo.)
Hence looking for some reliable mechanics through T-BHP references to change from R12 to R134.
Will surely check the Dupont references. Thanks for the same.

[Aromal]

Originally Posted by sgiitk

If the ASS will empty the unit and then refill with the proper quantity, adding a bit of oil, then I will go for it. Also, check whether the refrigerant is included in the ASS price.

Sir I have a doubt, Is it must to empty the unit & then refill to the required level? Also whats the use of adding oil, when Freon itself will lubricate the system?

[sgiitk]

@aromal; This is what Honda ASS did when I got the recharge of my Civic (I had managed to bust the condenser when soad road grit went into it on NH75. I found the charge a bit low after three years. Finally, the recovery showed some 350gm or so while the full charge is 450. Fresh R134a and oil (all comps do carry a bit of oil, c.10ml or so).

[unk9ja]

Originally Posted by Aromal

Sir I have a doubt, Is it must to empty the unit & then refill to the required level? Also whats the use of adding oil, when Freon itself will lubricate the system?

The compressor is nothing but a pump. A pump has moving parts in it which needs to be lubricated. The car aircon system is close looped one and the oil circulates in it along with the refrigetant. When you recover the refrigerant, a small amount of oil is also removed from the system. This is called as used oil. To replenish the removed quantity, fresh oil is fed back during recharge cycle. This ensures that a correct quantity of oil is available for the compressor in the car. The oil can be replenished absolute, ie 1:1 or delta, in which a small additional amount is replenished.

[Aromal]

Originally Posted by unk9ja

The compressor is nothing but a pump. A pump has moving parts in it which needs to be lubricated.

Understood sir.

Originally Posted by unk9ja

The car aircon system is close looped one and the oil circulates in it along with the refrigetant.

Refrigerant is the working fluid in the system. it undergoes phase changes in the closed loop & thus the Air-conditioner works.

But my doubt is, Will the addition of oil to the refrigerant, changes the Psychometric properties of the working fluid & prevent the normal working of the A/C ?

[Sutripta]

Originally Posted by Aromal

Also whats the use of adding oil, when Freon itself will lubricate the system?

unk9ja should have added that Freon does not lubricate.

Regards
Sutripta

[Guite]

The AC compressor in my Hyundai Getz is near end of its life. Authorised service centre says a new compressor will cost about 40k. That's as expensive as a full fledged room AC, not just compressor.

So I have two questions:
1. Is car AC compressor specific to car brand and model? Can a compressor from any other car be used?
2. Can I get cheaper and yet reliable compressor from other workshops like Carnation?

[a4anurag]

Originally Posted by Guite

The AC compressor in my Hyundai Getz is near end of its life. Authorised service centre says a new compressor will cost about 40k. That's as expensive as a full fledged room AC, not just compressor.

So I have two questions:
1. Is car AC compressor specific to car brand and model? Can a compressor from any other car be used?
2. Can I get cheaper and yet reliable compressor from other workshops like Carnation?

Not sure on the cost front but do enquire at any FNG or A/C specialists.

They'll guide you as to what needs to be done and also get a second opinion from another HASS.