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- Posts
- 72
- Location
- Pretoria, South Africa
Hi all,
Summers arrived here with temps up towards the 30's so my air-con is being used again. I've noticed that when idling without the heater on or in econ mode she ticks over at +/-750rpm but when the air-con is engaged she sounds a little rough as if the revs have dropped and there is an occasional knocking sound from the engine. The rev counter doesn't move though. Any ideas? It only happens when idling.
Summers arrived here with temps up towards the 30's so my air-con is being used again. I've noticed that when idling without the heater on or in econ mode she ticks over at +/-750rpm but when the air-con is engaged she sounds a little rough as if the revs have dropped and there is an occasional knocking sound from the engine. The rev counter doesn't move though. Any ideas? It only happens when idling.