Nissan Bluebird Slyphy AC problem

8502 (8502) 2020-07-01 19:49:43 +0500 #1

I have a Nissan Bluebird Slyphy with 1.5 engine I am facing a weird issue maybe it's normal or maybe it indicates a problem don't know.

When I start the car in the morning after some time if I switch on the air conditioner the compressor kicks on instantly along with the fan but the low side pipe remains hot and after sometime like 20/30 secs the car engine gets a little load and it starts cooling the pipe instantly and after that it works normally. The weird thing thing is the clutch is always engaged means it starts as soon as I switch on the ac button and it doesn't trip when engine gets a little load. Secondly after the first start in the morning this cycle doesn't happens all day means after that it works instantly all day. Secondly the clutch is always on it never trips no matter if i set the temp at 25/26 it's always running it never trips. The fans change speed accordingly like at first start they are high but when low side pipe starts cooling it runs at full speed.

I have checked the ac pressure low side high side they are all normal.

Please anyone share their opinions.

VCheng (VCheng) 2020-07-01 20:46:33 +0500 #2

Can you cycle the clutch manually?

8502 (8502) 2020-07-01 23:22:59 +0500 #3

Means? If I turn off the ac the clutch stops and then if switch on the ac it starts.

VCheng (VCheng) 2020-07-01 23:45:17 +0500 #4

You can power the clutch with the AC off by directly providing power from the battery and see if it clicks on and off, or not.

8502 (8502) 2020-07-02 00:07:18 +0500 #5

That's too technical. When the engine is running and AC is on I closely look at the compressor to see if it trips but it never trips.

omersiddiqui5482 (omersiddiqui5482) 2020-07-02 11:22:01 +0500 #6

@8502 sir you bring unique cars and unique problems to the forum! Please have the amount of refrigerant in the system as well as the pressure valve checked and thermostat checked the compressor should trip as the required temp is achieved.

8502 (8502) 2020-07-06 00:55:08 +0500 #7

Omer Bhai I always like out of market cars I believe that differentiates me other. Anyway gas is ok I checked it twice the low pressure and high pressure are fine as well. This car has climate control may it's the reason it doesn't trip my Galant also had this issue it never tripped and that also had climate control. While ac is on This car sometimes gets load if look closely for example if you keep the windows switch up when it's already fully closed the engine rpm flactuates just a little that flactutes sometime when ac is on but cluch never disangages. Even at cold start if switching on the ac the clutch starts moving but the gas circulates after a little few seconds when the rpm flactuates a little and suddenly it cold cold. Maybe it's genuine setting issue or not that's what I am asking