Miata Z3?

There is something odd about this Miata. I always thought there were some similarities with the look of the BMW and the Mazda but this is just confusing.

Miata Z3

The Green Hornets’s car

1965 Chrysler Imperial
Black Beauty from the Green Hornet

I watched the new Green Hornet movie last night. I thought it was really funny. I loved the way they did not even try to make the stunts realistic. They were just way over the top exciting.

I loved the updated version of Black Beauty. The 1965 Chrysler is a really cool car. I did hate learning that they destroyed 25 of them making the movie. For that reason alone, I hope if there is a second move they use a more modern car. I think the new Chrysler 300 could fill in if the old car makes a cameo.

I did find a nice example on eBay:

Black Beauty

Green Hornet’s car

Air Conditioner 1995 GMC Suburban

Servicing the Air Conditioner 1995 GMC Suburban

My Ac compressor recently failed in my 1995 GMC Suburban. Changing the compressor is relatively easy. Just three bolts hold it to the cradle. See this previous article on changing the Suburban AC compressor.But servicing the rest of the system after a compressor failure is a bit more of a challenge.

My Suburban has the dual with two evaporators. One is located under the dash and a second one is located in the rear fender. The orifice tube is not in the same palce as in the pickup and the single system SUVs. The orifice tube is located under the battery support.

Removal of the battery tray involves removing several fasteners that hold the complicated tray to the fender and to the front header. It took me a while to locate them all.

With the tray removed, the junction containing the orifice tube can be accessed with wrenches. It took quite a bit of torque to separate the nut from the fitting so a backup wrench was critical. Once the junction was separated; I extracted the old orifice tube with needle nose pliers.

The filter screen was covered in metal shaving from the compressor that had failed. I used a flush solvent to wash out the metal shavings from the lines and the condenser. I used compressed air to clean out the remaining flush solvent.

Next I replaced the valves on both the high and low pressure ports. The low pressure port has a Schrader valve that looks like a tire core. It installs just like attire core as well. The high pressure port screws onto the line as an assembly. I did not have a wrench that fit the flats on the fitting, so I just used Channel Locks.

I was not able to get the lines to separate at the rear of the truck so that I could flush these lines. I am going to take the risk and reassemble the system with out flushing these lines.

I had to make an adapter to connect my old vacuum pump to the 134 type fittings. But it pulled down quickly and held a vacuum just like it was supposed to.

At first, the low pressure switch would not let the compressor run. Even with a hot can of Freon attached to the accumulator. I checked all the wiring just to make sure but it was in fact the low pressure switch holding it out.

I made up a jumper to force the compressor to run. Very quickly it began pulling Freon from the can. Ice formed on the can to let me know it was going down. I removed the jumper periodically to see if the low pressure switch was satisfied. It took one full can before the low pressure switch would let it run at all. Then it would only run a second or two and then kick back off. I continued on with the jumper in place.

The line after the orifice tube began to ice up but the air in the vents was still not cold. I removed the jumper and let the line thaw for a while. I then added the third can. The pressure switch was letting the compressor run a bit longer but I still left the jumper in place. Finally, with the third can in, cooler air came out of the vents. I was out of Freon so I let it sit for the evening.

The next day I got another can and added it to the system. Finally the low pressure switch stayed in and the system began to cool properly.

So far, it is working well. AC will be nice in the record high temps we are having in Tennessee this week.

[phpbay]suburban ac, 10[/phpbay]