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Oil Pressure Light when Hot

524 Views 2 Replies 2 Participants Last post by  GBH
Hi all,

I have a MK3 2004 1.8 which has developed an issue. Everything seems ok but after I've run the engine and it's heated up to running temp the oil pressure light comes on. I've checked the oil and it's fine and sometimes it seems to not come on. Other times it comes on after a good 10-15 mins running at temp other times it comes on almost the second I reach running temp.

Anyone have any ideas what might be causing this? I've checked previous posts which list the switch being faulty or the pump failing but that all relate to the start of a journey, not after the engines heated up. Could it still be a faulty fan or oil pump or is there something else that might be indicated by it only happening when the engine is hot?

Thanks in advance

1 - 3 of 3 Posts
hot oil is thinner than cold oil

1. change the oil and filter
2. change the pressure senser

if it still comes on then its either your oil pump or engine failure - worn big ends/main bearings

you MAY get away with a set of shells
Thanks I'll give those a go

1 - 3 of 3 Posts
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