Rebirth of Khyber 1996 - Daniyal

[Xulfiqar]

That card per se (exact as old 86-89 accord and civics with carb engine)

Is the original ac evaporator temperature controller and its a delay signal to the compressor so the driver doesnt feel the ac compressor kick in, it also had input from the original thermistor which ac mechanics call a “bellow”

It tripped in at 4 degrees c and out at 2. You can use a mechanical thermostat for that job too.

The wiring from the low and high pressure switches still relayed a 12v signal, which you can directly connect to a relay,

The hot engine switch is also found in 3 cyl cultus on both waterpump tube and also thermostat housing depending if the factory system was sanden or denso.

The high pressure switch and hot engine switch cuts out power to the compressor relay to switch it off as failsafe.

[nnabeel]

AC WALA k kaan per ik chunt lagao. us ko pata nahee tha k vitz ka condednsor size mai bara hota hai.
And second he should have mentioned about the missing card.

Ask him to resolve the issue and all these things to be mentioned by the ac wala before installing / experimenting anything.

And the meter lights are too bright. get them low.

[sardarg]

meter is too bright. restore to original tiny bulbs. you can ask hafiz zulfiqar to do the job as per oem. such wagon 6 wheeler ricksha clusters are not for private cars.

[miqdadkanani]

I got this done from Hsfiz jee only. I think he too is gradually losing credibility as in the case of mustansir too.
The speed readings are out too. I am worried about temperature reading more than anything. Although I got hold of original ND temperature switch

[miqdadkanani]

Yes I think its his fault partially. He told me at the time of fitting that its oversize by 0.75inch. Its not a big problem to be honest as I will be going to the denter and I am sure there will be a fix.

The card thing, he mentioned, but also said upon insistence that he can do a jugaar and make it work with a Relay. I think this is what @Xulfiqar bhai is also suggesting.

I still be going to taroq Rd in an hour to find that switches. After that will see how and what works

[pwuser162557941033]

I think what you're talking about is called the AC controller, amplifier, or computer, depending on who you ask. This is the one for my Jimny that has, sadly, also been removed and replaced with a relay.

@hassantaewra can you post a picture of your Margalla's AC controller?

[miqdadkanani]

Found the trinary 134a switch from scrapyard

[miqdadkanani]

Is it the hot engine cut off switch.. where do I fit this in Khyber? I guess on the thermostat flange may be and replace the original temperature sensor?

[miqdadkanani]

[miqdadkanani]

Or get another hole bored on the flange and fix it?

[miqdadkanani]

Sorry I mean fix it on the flange by making another bore besides the Auto fan switch?

[capsat]

take the cluster back to hafiz ji tell him to remove the bright whites and restore it to original micro bulbs. he will not decline. He is going as wind direction demand 'chaka chak' meter lights as demand of user. He will not decline your request right on spot, you may have to wait 30 minutes for the job.

[hassankhan03]

The good thing about my margalla was it has all the original stuff intact as my AC was never messed ever with , also i removed its dashboard after 25 years for the first time , with all original stuff , I’ll try to upload its pic .

[miqdadkanani]

I think this is how the 4 pin pressure switch works. @Xulfiqar or @Hassan1991 can Guide better.

[Hassan1991]

Compressor also has a relay.
Not sure about the internal circuity of switch. From the diagram it seems both connections open Up when switch operates.

[Xulfiqar]

The switch operates the low side as normally open and under pressure to close (to energize the compressor relay confirming minimum safe amount of gas is in system) - it also cuts out the system when liquid pressure exceeds something like 330 psi

The high side operates high speed of condenser fans and is held normally open until required.

Khyber had two dedicated switches, one low pressure safety cut and one high pressure safety cut, and one final hot engine switch.

[miqdadkanani]

So the trinary switch I posted the pic above will work?

Also, what about hot engine cut off switch? Where do I fit this? Flange or some radiator inlet pipe or...?

[miqdadkanani]

@Hassan1991 so as per @Xulfiqar bhai suggestion, it seems that I need to Install two of these trinary switches (that I posted above), right? And a hot engine cut off switch separately...

[margallar]

You can buy a brand new cultus multiflow sanden condensor, i think it will fit

for shocks, does agri auto not make brand new ones? get new ones, not repaired ones

[margallar]

I wouldn't have gone for engine repairs, its 2023 now, an M series swap would be a more sensible option