kirbdawg69
I hate my sceen name :(
- Joined
- Nov 11, 2007
So worked on my AC over the week. I replaced all the O-rings, the dryer, compressor, Oriface tube, and filled it with R-12. When I replace the Oriface tube I did change it out to the red Ford tube. Im not really sure if I installed it completely right. I remember that I was stuggling to get it seated all the way.
So I go for a test drive and have the AC on and everything is fine and danndy, temp was around 80's.... until I noticed that my engine temps started to climb (in traffic). Get on the freeway and expect the temps to recover and they never do. I have a large Be Cool radator with 50/50 water and the orange anit freeze with a little bit of water wetter and normal driving temps are 165 freeway and 190 in traffic if hot out. I know that my electric fan isn't pulling enough air while in traffic and the car will slowly climb in temp but hasnt been a problem before, as it climbs so slow that it never got over 200 before.
On my test drive with the AC on the freeway the car's temps never came back down and I noticed that the car was stuggling with rolling. Got off the freeway turned off the AC and felt the brakes dragging. I have a Hydroboost set up and Baer disk brakes all the way around the car. I have never had a problem before with the brakes. while in traffic looking for a parking place I shut the car off and turn it back on and it got the brakes to unstick. I thought this was really wierd as it seemed like an electrical thing but the hydroboost is ran off the steering pump.
At this point I found a parking place and went and checked out a car show while the GN cooled down. I figured that my electrial fan wasnt good enough to do the job when the AC was on in traffic. About 2 years ago when the AC was charged before I didnt have that much trouble with the AC but I was living in Oregon and now I am in SoCal and figured it was just warmer here.
To test my theory on my electrial fan not doing its job enough I left the AC off untill I got on the freeway. Every thing was great for a while, cold AC, engine temps were low 190's (normal would be mid 160's low 170's). I figure with AC on the temps should be a little higher. Right before I got off the freeway I noticed that the brakes were dragging again. Pulled off to take a look at things and noticed that the AC compressor was really hot, which in turned made the power steering pump hot which heated up the hydroboost unit, which caused the brake fluid to get hot and cause the brakes to drag.
My car didnt have a chance.... with the AC on the cooling air being hotter and then the brakes dragging making the car work harder it would never cool down. I think that my AC compressor and AC unit is too hot. When I worked on the system I bought the mineral oil for R12 from Napa and put 5 3/4 oz of fluided in the system, the book calls for 6 oz. and I put 5 3/4 oz. as I figured that there was around 1/4 in the system as I didnt flush the system. 2 oz. in the compressor and 3 3/4 in the drier.
My questions:
Would an unseated Oriface tube cause a restriction and cause the AC system to run hot?
How hot should my AC compressor get?
Did I not add enough oil in the AC system?
What difference in engine temps do you see with the AC on then off?
Why when my hydroboost system was hot and making the brakes drag did turning the car off and right back on cause them to unfreeze?
If you have stuck thru this the whole time thank you in advance for any input.
So I go for a test drive and have the AC on and everything is fine and danndy, temp was around 80's.... until I noticed that my engine temps started to climb (in traffic). Get on the freeway and expect the temps to recover and they never do. I have a large Be Cool radator with 50/50 water and the orange anit freeze with a little bit of water wetter and normal driving temps are 165 freeway and 190 in traffic if hot out. I know that my electric fan isn't pulling enough air while in traffic and the car will slowly climb in temp but hasnt been a problem before, as it climbs so slow that it never got over 200 before.
On my test drive with the AC on the freeway the car's temps never came back down and I noticed that the car was stuggling with rolling. Got off the freeway turned off the AC and felt the brakes dragging. I have a Hydroboost set up and Baer disk brakes all the way around the car. I have never had a problem before with the brakes. while in traffic looking for a parking place I shut the car off and turn it back on and it got the brakes to unstick. I thought this was really wierd as it seemed like an electrical thing but the hydroboost is ran off the steering pump.
At this point I found a parking place and went and checked out a car show while the GN cooled down. I figured that my electrial fan wasnt good enough to do the job when the AC was on in traffic. About 2 years ago when the AC was charged before I didnt have that much trouble with the AC but I was living in Oregon and now I am in SoCal and figured it was just warmer here.
To test my theory on my electrial fan not doing its job enough I left the AC off untill I got on the freeway. Every thing was great for a while, cold AC, engine temps were low 190's (normal would be mid 160's low 170's). I figure with AC on the temps should be a little higher. Right before I got off the freeway I noticed that the brakes were dragging again. Pulled off to take a look at things and noticed that the AC compressor was really hot, which in turned made the power steering pump hot which heated up the hydroboost unit, which caused the brake fluid to get hot and cause the brakes to drag.
My car didnt have a chance.... with the AC on the cooling air being hotter and then the brakes dragging making the car work harder it would never cool down. I think that my AC compressor and AC unit is too hot. When I worked on the system I bought the mineral oil for R12 from Napa and put 5 3/4 oz of fluided in the system, the book calls for 6 oz. and I put 5 3/4 oz. as I figured that there was around 1/4 in the system as I didnt flush the system. 2 oz. in the compressor and 3 3/4 in the drier.
My questions:
Would an unseated Oriface tube cause a restriction and cause the AC system to run hot?
How hot should my AC compressor get?
Did I not add enough oil in the AC system?
What difference in engine temps do you see with the AC on then off?
Why when my hydroboost system was hot and making the brakes drag did turning the car off and right back on cause them to unfreeze?
If you have stuck thru this the whole time thank you in advance for any input.
