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Hi everyone,

After replacing the condenser and one of the pipes from the cabin down to the condenser which were leaking; the system now holds pressure (yay!) and was regassed only for a new problem to emerge!
With the a/c off the car runs absolutely fine and when the a/c was switched on the compressor kicked in. By dipping the throttle and letting off whilst in neutral the engine misfires and the internal and dash lights dim. The compressor also appears to kick on and off fairly quickly with intermittent cold then warmer air blowing out the vents.
The garage engineer had no idea what the issue was and said he was not happy to let the car go in the condition it was so all the refrigerant was dumped and I am still non-the-wiser without the ability to troubleshoot the issue myself. He also said that initially the compressor did not kick in at all once the gas was in until he gave the connector on top of the compressor a jiggle.

Thinking this could be some electrical issue but does anyone have any ideas what it could be that I can look into replacing before I take it into a specialist to have a look?

Thanks.
 

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I understand the garage engineer was not happy returning the car to you with that problem, but without the refrigerant, you can't run the AC or duplicate the problem, or effectively troubleshoot the problem. Your problem could be outside of the core components of the AC system, but it sounds like the AC system is messed-up. You might also have 2 faults rolled into one. The garage engineer either failed to evacuate, dry (hold vac) and charge the system properly -and/or- failed to replace the receiver/drier and orifice tube -and/or- the compressor or clutch or clutch electrical control is messed-up. I would be lightly upset with that garage engineer and would either ask him to try again (for free?) or take the car somewhere else.
 

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Could have a small vacuum leak that lets engine seem to run OK until loaded hard. A/c load is a handful for a small engine like 1.6 even under the best of circumstance. The a/c will pull fully half the power made at idle. These cars even with bigger engines are well known for seeming to run fine at idle until the a/c comes on to shove that all in the toilet.

Actual true misfire is an ENGINE issue, you must carefully differentiate between that and simple normal engine pulldown from say a/c too much load, meaning engine simply drags down to try to die, that could be a/c caused.

Sorry to say, as said you must have it charged back up to do anything. Someone needs to look at the high side pressures to see if something wrong.
 
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