Technical A.C. not working - Linea T-Jet FL India-2014

[Navin Talati]

friends,

I need your earliest help for the AC problem in my Linea. It is a Linea T-Jet Emotion (2014 Model Face-Lift-India).

For last about 6-7 months, the issue of AC is giving troubles. In the begining, some times working and some times not working... stopping during running.. again starting.... and so on..

Meanwhile the above period, I came to know that same thing was happening with the blower fan. It was due to the Resistor, and I recently replaced the same with a new one original. So the blower fan started but the AC is not working.

As of now the AC is totally stopped working.... not working at all.

I have checked fuses and relays... all are ok. Also checked and refilled and updated the refrigerant couple of time but no change in AC behavior.

I studied many posts like:

https://www.fiatforum.com/grande-punto/457137-2008-eleganza-dual-climate-spotty-fan.html

https://www.fiatforum.com/grande-punto/458206-eleganza-heater-not-blowing.html

https://www.fiatforum.com/grande-pu...ater-fan-wiring-loom.html?344602=#post3425921

etc. and googled many pages, but unable to resolve the issue.

Can any one help me how can I resolve the issue? What may be the causes for this non-working of AC? If any further information is required, I shell be pleased to provide it.

Awaiting your valuable response.

Navin Talati /17-11-2021

Regards.

 

[eeeno]

Have it diagnosed with Fiat specific diagnostic equipment which can connect to AC ECU.

 

[Navin Talati]

I visited FASS, however obd scan didn't result in any relavent error. I am not sure they have checked all parameters and whether their scanner worth capable of connecting to AC ECU.
I am thinking of purchasing an OBD scanner. Can you please suggest a reliable one for Linea Tjet 1.4 (2014)

 

[eeeno]

Generic obd scanners aren't able to connect to canbus. Multiecuscan software with recommended connectors can do it.

Surely AC is not a DIY job, so any ac service center can fix it. It may have leaks and pressure switch prevents the compressor from starting in an order to prevent damage.

 

[Navin Talati]

I think there may be an issue with the solenoid fixed within the a.c. compressor (DENSO) it self. As in Linea tjet, the a.c compressor is clutchless and get regulated (I.e. engaging and disengaging the a.c.) by the solenoid.
My request to forum friends is to guide me or advise in the following matters.
1. Can I get this solenoid part separately? Where?
2. How to remove a.c. compressor and refit it after replacing the solenoid in it.
I need these information in detail and at the possible earliest time. As most of the repairers opines of replacing the whole a.c. compressor which may cost me about INR 40 K....!
Please guide me and oblige.
Regards.
Navin Talati / 03-02-2022

 

[eeeno]

Have your AC repaired by an authorized workshop who does ac maintenance, refills and repairs. It's like any car with AC, they can debug it and find the fault but it'll cost you money. On top of that AC stuff is strictly for professionals- diy handyman will just break it and cause damage.

Most usual fault is the compressor failure if it had never been serviced before the fault. It may also have a leak.

I suppose a software called Multiecuscan can do the job of scanning all the codes but license costs and u need to get compatible cables.

 

[Navin Talati]

Friends,
I am updating this thread.
Ultimately I had to replace the compressor of my Linea Tjet by a new one original OEM part. I herewith attach the photo for your information. Upon measuring the resistance of ECV of the New and Old Compressors, it is found that its value of 18.2 Ohms in NEW compressor while that of OLD compressor is just 1.8 to 2.0 Ohms. This implies that the ECV was the main culprit which forced me to replace with whole new compressor.
Anyway, it is done. I need guidance and help for the following:
1. Can any one tell me that from where may I get the NEW ECV of this compressor?
2. Please see the picture attached herewith and kindly tell me what is the place/point location which is with a circlip lock and what is the use of it. Can it be opened? What is the use or function of that point or location in the compressor.
Awaiting your reply.
Regards to all.
Navin Talati / 17-06-2022
NOTE: Two Files are same (with same name) but have different properties.

 

[abhinavj]

Friends,
I am updating this thread.
Ultimately I had to replace the compressor of my Linea Tjet by a new one original OEM part. I herewith attach the photo for your information. Upon measuring the resistance of ECV of the New and Old Compressors, it is found that its value of 18.2 Ohms in NEW compressor while that of OLD compressor is just 1.8 to 2.0 Ohms. This implies that the ECV was the main culprit which forced me to replace with whole new compressor.
Anyway, it is done. I need guidance and help for the following:
1. Can any one tell me that from where may I get the NEW ECV of this compressor?
2. Please see the picture attached herewith and kindly tell me what is the place/point location which is with a circlip lock and what is the use of it. Can it be opened? What is the use or function of that point or location in the compressor.
Awaiting your reply.
Regards to all.
Navin Talati / 17-06-2022
NOTE: Two Files are same (with same name) but have different properties.

Hi Navin, im facing the same issue on my 2010 Tjet. Ac mech says valve faulty, but unable to get the valve part number or know where to get from. A/c requires revving the engine to start. Else, just the blower blows air

 

[Navin Talati]

Hi Navin, im facing the same issue on my 2010 Tjet. Ac mech says valve faulty, but unable to get the valve part number or know where to get from. A/c requires revving the engine to start. Else, just the blower blows air

Hi Abhinav,
Where are you from?
I could also not get the ECV which was the only culprit in the A.C. issue. The cost of the ECV may be hardly 1K to 1.5K. but could not get it.
Ultimately I am compelled to replace the whole a NEW compressor costing about 40K.
Read about the Resistance value of the ECV in a new installed and old (which is replaced) compressor.
Needs any other info? Please let me know.
Regards.
Navin / 6-6-2025

 

[abhinavj]

Hi Abhinav,
Where are you from?
I could also not get the ECV which was the only culprit in the A.C. issue. The cost of the ECV may be hardly 1K to 1.5K. but could not get it.
Ultimately I am compelled to replace the whole a NEW compressor costing about 40K.
Read about the Resistance value of the ECV in a new installed and old (which is replaced) compressor.
Needs any other info? Please let me know.
Regards.
Navin / 6-6-2025

Hi Navin,

I'm from Goa. My a/c mechanic managed to get some valves locally and has replaced them, however the issue is not fully resolved.
While the a/c does cool, it requires revving the car a bit for the compressor to start whenever a/c is switched on.
Mech did suggest to get a replacement compressor (even from a scrapped car would do).
Currently managing with this setup as I intend to let go of the car in another 4-5 months. Car would also complete 15yrs this November.

 

[Navin Talati]

Hi Navin,

I'm from Goa. My a/c mechanic managed to get some valves locally and has replaced them, however the issue is not fully resolved.
While the a/c does cool, it requires revving the car a bit for the compressor to start whenever a/c is switched on.
Mech did suggest to get a replacement compressor (even from a scrapped car would do).
Currently managing with this setup as I intend to let go of the car in another 4-5 months. Car would also complete 15yrs this November.

Dear Abhinav,
Thanks. Learnt that you are from Goa. Might be a technical person.
The ECV from scrap market could not be judged. Depend on our luck too.
Final solution is the Replacement of compressor which I had to do. For last three years it is working fine.
If your car is other way ok then it may be fine to retain. My car has also completed about 12 years and if it is maintained properly, then there may not be any major issue for further few years. I had a Fiat palio 1.2 nv which I used for 22 years and still it was working fine but unfortunately rats have cut the wiring and hence I had to scrap it. Otherwise it was fine.
I am mostly maintaining my cars myself and mostly on DIY basis.
Any way I can not comment more that this upon your wish and will. But the BUILT Quality of Fiat is non-comparable with that of the equivalent other car models. Still almost major original parts are available. Modern cars are more instrumental based and actual service experts are not available of that level.... they just replace the thing at customer's cost.
Mean while I request you to ask your repairer/mechanic if he can procure the LCD Screen which exist in the center of the meter console. ---Let me know.
regards.
Navin Talati