sp00led

Here is the scenario. I installed a compressor that appeared to be in good shape. When manually turning the clutch it built pressure over the inlets and when jumping the sending wire I could see the clutch engage/disengage.

The problem I'm having is that when I hit the AC button in the car at the shop once we fill it with some R134a it's not kicking the compressor on to finish taking the remaining oz's of r134a.

Are the radiator and compressor fans supposed to kick on when the AC call is sent even when there is no refrigerate in the system? Because they don't. I know the clutch won't kick on without refrigerate in the system but I can't even get my compressor fan to engage at any point and I think that's an issue.

I've swapped in a known good relay for the compressor fan. I checked that the 20 amp fuses are good under the hood.

The AC shop that let me use their machine sent me down the path of a bad compressor clutch but now that I've bench tested it and see that the clutch is good I'm thinking it has to be something else.

sp00led

So here's a new one for me... My brother had a local honda shop install the engine. Apparently they got the AC wiring harness mixed up with one from a 94-97 integra. I noticed it had the relays installed on the radiator support and my 99' teg does not.

The helms manual actually sent me down that path.

For troubleshooting an AC compressor fan that is not working you can jumper the 1 and 2 poles that the ac compressor relay plugs into which is in the under hood fuse box. The 1 and 2 poles are the top ones closest to a usdm driver fender (1 is closet to driver side). That should kick the fans on. I should also note the previous test was to check that you have 12v from pole 2 and a ground (I did and I suspect that just tests the fuse before it). In my case connecting 1 and 2 did nothing so it said I had a open circuit on the blue/black positive wire that goes to the condensor fan. This was true as I didn't have continuity between the blue/black positive wire for the fan and the number 1 pole on the under fuse relay box.

I got continuity from the top #1 pole on the under fuse relay box to the harness connector on the passenger side. I then noticed it has a older style AC wiring harness (94-97, verified different part numbers) on it. The older ones actually will fit the compressor, ac pressure switch, and compressor fan but will not obviously work.

We're getting a new 98+ AC wiring harness and going to recharge the system. I'd bet this is the entire issue.

Oh and what's up with the integra forum?? Not even one post from a hatter saying search or get a helms manual lolz.

fcm

So is this in a 99 Integra, you did not say, directly.

So MM&Y of car it's in and MM&Ys of any swapped parts, be specific.

Sometimes you have to wait more then one day for a response. 94

Solster

we drive integra's so we spend more time on the road and less time trying to win a pissing contest online with are cars in parts acrossed the shop floor.

MDA-integra94

Condenser fan is not your problem, this fan will not come on until the discharge pressure reaches high enough level which will not happen if the compressor is not running. The suction low pressure switch will keep the clutch from running compressor until there is enough refrigerant in the system.

Did you pull a vacuum on the system before you added charge? What are your system pressures?

MDA

sp00led

The car I was working on is a 98' Integra (I own a 99'). The problem turned out to be that the 98' had a 94-97' AC wire harness on it. While it will plug up the pin outs for the compressor fan and clutch are different. Easiest way to tell the difference is the 94-97' has two relays on it where as the 98-01' does not.

FCM, I see you posting in here with good **** all the time. Just making a joke when I didn't get a response.

Yes, we pulled a vacuum each time and it always held. Intrestingly enough I learned that while it may hold a vac it doesn't mean your system doesn't have a leak while under pressure. On trip two we replaced the o-rings and that big gasket on the top of the compressor and it fixed the leaks that they detected with their sniffer.

So just to follow-up. The compressor fan only runs when the AC clutch kicked on and the system was working. The only other way I know to test it is to jumper the 1 and 2 points in the under hood fuse box. It should come on once jumpered even with the ignition switch off.

July/Aug in Alabama sucks without AC. My brother has a new love for his teg now that it's working.