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From my understanding the GP relay on the early 2-wire GP systems, the ground is switched by the ECU. Thus, giving the factory relay power wouldn't do anything at all I believe.

Correctile-dysfunction my friend. It gives it enough heat to help her start and not be bone cold, but also just enough to not fire the plugs and have the combustion chambers still be bone cold. I do have the GP time at the max, but again as we know.. the plugs won't fire if the engine thinks its...

Everything works as it should, except for when I use the frost heater and don't it run long enough. If it has added a little bit of heat to the engine it will trigger the CTS in to seeing too warm to fire off the glow plugs, but the engine is not warm enough to start without them. This results...

I have heard tale there is a factory wiring harness to add trailer lights to the mk4. Does anyone have this? I have found my local parts desk to be rather incompetent.. haha

Replaced the turbo actuator with a new one today. Did it all from the topside of the car! Everything came undone easily, and with the actuator off the vanes move as freely as they possibly could. No drag whatsoever in their movement. The old can was full of rust and likely had a perforated...

No, it really isn't. Its just an old school way of making more power. Are you one of the believers a tune magically does something different? Lolol

Can we get a 9 year revival!? I assume there was pictures and junk that no longer exist from the beginning of this thread. I fully understand the consequences of more fuel/boost on a diesel. I have an EGT gauge, so don't worry. JUST NEED TO KNOW HOW TO DO THIS :)

I have had the car since February. 290k kms. The EGR/anti-shudder is delelted, so the vacuum system is very minimal now. Everything seems okay, however I dont have a mightyvac to verify that the lines or actuator hold vacuum. I had the lower pipes off when I did the timing belt when I bout the...

I have never driven another ALH car, or any VNT car before owning this one. I have a weird power band, its pretty late.. and laggy when shifting. I thought VNT's were supposed to be the almighty! lol (I understand it is likely not acting correctly..) Sometimes, I will drive 100 km (my drive to...

Oh no doubt. Fortunately enough for my backyard ways, there are MANY ways to get something done beside the 100% by the book way lol. The A4 platform is full of old junk ass cars these days, how much would anyone REALLY spend on it right?

So, it starting to blow cold as soon as you select the AC, and 32F out of the vents is not correct? If the pressures aren't too high and dangerous.. Is ice cold air from the vents not the desired action we're looking for? I'm confused on that one. Is there such a thing as a system working TOO...

These were my pressures before touching the system. It was only able to cool 10f lower than ambient even after dark.

So after fixing that (albeit permanently lol) the system was working as it should, SCORE. I got some gauges on it, and they were more or less fine. This was at 90f; So I had some cans of the KwikKool and I decided to add one slowly to see what it would do. It worked incredibly!

Well as it would turn out, the 4.33v I was seeing at the compressor wiring was indeed enough to suck the new coil in.. WEIRD. Upon dropping the compressor to remove the clutch, pulley and old coil.. it seems my nut came loose at some point and beat the splines off the clutch. No big deal! booger...

Some more knowledge I found out WildChild80.. apparently your stuff is working correctly.

I appreciate your help, I really do. I was just unaware of that test tbh. I am much more knowledgeable on automotive AC systems after today.

Hmm, I know on like my gfs 06 honda, or my 98 jeep, or 88 chrysler I am sure they all cycle. But they may not use a TXV in the system that regulates low side pressure? I have no idea.

Perhaps you are right.. I am not sure now if that was a cycle or something else. So on these systems the compressor will turn 100% of the time that the ac is called for?

Did this offend you somehow? I used a $5 can of refrigerant as a diagnostic tool, what is so wrong with that? Either it worked or didn't work.. Not everyone can know how to do everything, I wouldn't have made this post if I knew how to diagnose it fully by myself. Now that I understand its...

In relation to the ambient temperature, yes? Apparently at an ambient of 90F, it should be at 105psi on both gauges. It was this pressure. Does that indicate the system is not blocked? I have not, but it definitely doesn't feel like any heat is getting through now or before I got the AC...