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Maintenance & Repair Climate Control Problems (Air Conditioning, Heat) - All Cars
791 messages, Last post on Aug 12, 2009 at 12:55 PM
You are in the Maintenance & Repair Forum. Your Host is mr_shiftright
I am installing a aftermarket a/c system in a streetrod and using a ford compressor. Ford wiring diagrams show a diode between the ground and hot side of the compressor connections. What is it's purpose and if I do not use it will it harm the clutch field??? Thanks.
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Replying to: 3003 (Sep 30, 2007 12:34 pm) |
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Replying to: 3003 (Sep 30, 2007 12:34 pm) If you do not use it, then you take a chance on burning up the hub. There is a reason it is there, make sure it is installed. Half the retro installations I have seen without the diode end up burning up the clutch. I have replaced quite a few of the hubs because of something like this. |
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After my out-of-warranty '04 Element's A/C stopped working last week, the local Honda Dealer's service manager informed me that the A/C system was "full of metal" - indicating a complete internal breakdown. He could flush the system and replace the compressor but wouldn't recommend it because the metal pieces couldn't be totally eliminated and the system would fail within a year - probably sooner. So, his solution? Replace it all. $3,500. He claims that only by replacing the entire system (all parts/belts/hoses/everything) could A/C capability be restored. This strikes me as 1) extreme and 2) expensive. Does anybody have any suggestions for me? Thanks!
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Replying to: rlmnt (Sep 30, 2007 6:11 pm) Check around your area for a local honda specialist shop or an A/C Specialist shop and see if they can give you an estimate on the problem. I would prefer an A/C specialist shop, as that is all they do and are more versed in those systems. I deal with an A/C place that is in my profile, their site may be of some use. |
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Replying to: rlmnt (Sep 30, 2007 6:11 pm) Really the only way debris can be in the system is if your compressor seized or is very very noisy and on the point of seizure. Did this happen? It should have been quite noisy and given you plenty of warning, but not always...
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Replying to: Mr_Shiftright (Oct 01, 2007 7:47 am) |
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Replying to: llcooljj26 (Aug 11, 2007 8:10 pm)
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Replying to: wornout59 (Oct 05, 2007 8:36 am) Testing/Diagnostics/Checking is the first thing you should ever do. Throwing parts at it is rarely productive and most times costly. Now this is where a good information system comes in handy. AlldataDIY is something you should have before starting a repair. I know, it may sound like an advertisement, but understand that a manual does NOT give you updated information and service bulletins. That being said, there is a service bulletin about Synchronizing the passenger and driver's side. (See next post) |
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Replying to: wornout59 (Oct 05, 2007 8:36 am) Bulletin No.: 03-01-39-008 Date: June 25, 2003 INFORMATION Subject: Changes in A/C Compressor On/Off Instrument Panel Display Symbol from 2003 to 2004 Model Year and Synchronizing the Driver and Passenger Set Temperatures Models: 2003-2004 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2004 GMC Denali, Denali XL, Sierra, Sierra Denali, Yukon, Yukon XL 2003-2004 HUMMER H2 with Dual Zone Automatic Climate Control (RPO CJ2) This bulletin is being issued to clarify the operation of the A/C compressor and to explain the driver and passenger set temperature operation on vehicles equipped with dual zone automatic climate control systems (RPO CJ2). Operation of A/C Compressor 2003 A/C OFF Indicator On 2003 model year vehicles, a snowflake with a slash through it is shown on the display when the A/C has been turned off (by a press of the A/C button). The A/C can be turned on by pressing the AUTO button or pressing the A/C button again. This will remove the indicator from the display. Some customers may comment about poor A/C performance after they've pressed the A/C button and see what appears to be the snowflake illuminated on the display. What has actually happened, though, is that they have disabled the operation of the A/C compressor and the snowflake symbol, upon closer inspection, has a slash through it. 2004 A/C ON Indicator On 2004 model year vehicles, the indicator will change to a snowflake (without the slash) and it will be illuminated whenever the A/C compressor operation is enabled. Driver and Passenger Set Temperature Operation The display of driver and passenger set temperature may also cause confusion. It is possible to set the left temperature control to full cold and the right temperature control to full hot with little indication on the display that the two temperatures are set differently. If the driver set temperature is set to 16°C (60°F) and the passenger set temperature is set to 32°C (90°F), the display will show the passenger set temperature for only five seconds. After that time, the display will show only the driver set temperature and a small arrow pointing left. The arrow is very important because it is the only indicator that the left and right temperatures are not equal. When both the driver and passenger set temperatures are equal, the display will have arrows pointing both left and right. With different set temperatures, it is possible to have the left temperature door flowing air through the evaporator and the right temperature door flowing air through the heater core. This may cause the overall passenger compartment temperature to not be cooled or heated as well as the customer might expect. In order to synchronize the driver and passenger temperatures, follow these steps: ^ Set the driver and passenger set temperatures to the desired temperatures, OR ^ Push and hold the AUTO button for at least four seconds to make both driver and passenger set temperatures set to the driver's set temperature. Both set temperatures can be controlled by the left temperature control knob when the zones are linked in this manner. Turning the passenger set temperature knob will "unlink" the zones again.
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