Question about 1993 Geo Tracker

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A/C problem A/C clutch will not engage. Bought it used and never tried A/C until now. If it may be a fuse, where is it located--or any other advice?

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Unhook wire going to compressor. make a jumper wire and run from positive post on battery to wire going to clutch on compressor. if clutch engages, you have a blown fuse, bad a/c relay or the switch in dash may be bad. the main fuse box is located in engine compartment.

Posted on Sep 02, 2008

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Hi, I just bought an 04 ram 1500 and the a/c


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1 Answer

Hi, I just bought an 04 ram 1500 and the a/c compressor wont engage, any advice on troubleshooting? Thanks in advance, Steve


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1 Answer

Airconditioner compressor (clutch) on 2001 chrysler neon 2.0 does not activate when turning on a/c. a) bypass of a/c relay in engine comparment control box causes clutch to engage b) fuse is not blown. c)...


Resolution:
The problem turned out to be a blown fuse labelled EBL Clutch, located in the instrument console (side panel in the dashboard next to steering wheel on a RHD model).

I downloaded the manuals of the Neon and it advised a sequence of checks to be done:
1. Test High Pressure switch located on compressor - check that the switch w/o/ cable gives a closed reading, then test with bypass in cable.
2. Test Low pressure switch located on accumulator, ( I could not find this switch). Bypass of this switch should engage the compressor clutch
3. I discovered the blown fuse when trying to activate the rear window heater and saw that the light on the switch did not activate - went looking for the fuse for this device and then found the EBL Clutch, really by accident. Shows you how confusing an abbreviated label on a fuse can be and that it does not always support the significance of it.

Other observations:
1. A/C compressor cannot run non-stop and must be controlled by the A/C controller. Hard wiring the clutch and running the engine for a few minutes led to the compressor shuddering and then discharging some gas through the saftefy valve. Normally this power supply would have been interrupted by the high pressure valve.
2. Release of coolant gas from the high pressure safety valve located on the compressor may indicate a faulty high pressure switch, but the primary or underlying reason may be due to a blocked Dryer in the A/C system.
3. The Daimler Mercedes Neon Agents, and an A/C company and an auto electrical company all attended unsuccessfully to this problem. No discredit meant in any way, it just shows that the incorrect label here makes solving such an ordinary problem very problematic. If any advice can be given to the Agents, read the manual.

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