GolfGTIforum.co.uk

Model specific boards => Golf mk1 => Topic started by: Justins145bhpMK1 on 13 September 2005, 16:23

Title: Oil light
Post by: Justins145bhpMK1 on 13 September 2005, 16:23: Hhhm noticed my oil light has started to flash. doesnt appear to be at idle (low oil pressure?) but completely intermittent. Engines only on 74k

Just had a flush and new oil and filter so I know thats OK.

Is this a common gremlin?? Advice please, but loathed to drive it at the mo.
Title: Re: Oil light
Post by: Judderi on 13 September 2005, 16:24: Might sound daft but have you checked your level?
Title: Re: Oil light
Post by: Justins145bhpMK1 on 13 September 2005, 16:51: yep level is fine.
Title: Re: Oil light
Post by: richard ellison on 13 September 2005, 17:03: Justin mine is exactly the same, has been getting worse for 4 months or so. Fine at 1k or over, but at idle when warm the oil light will come on.

I think it might be the pump, maybe a blockage that means at low revs the pressure isnt high enough for oil to flow round?

maybe some of the resident experts might know more.. :angry:
Title: Re: Oil light
Post by: hc-animal on 13 September 2005, 17:53: mine is on all the time but my oil presure gauge say the presure is fine. this is a pretty common fault
Title: Re: Oil light
Post by: Judderi on 14 September 2005, 08:29: What engine is this on?
Title: Re: Oil light
Post by: Justins145bhpMK1 on 14 September 2005, 08:57: its a 1.8 GTI
Title: Re: Oil light
Post by: bugbits on 14 September 2005, 11:58: sounds similar to a problem i have with my gti. See my cab starting probs thread. my problem seems equally random, and only occurs on start up.
Title: Re: Oil light
Post by: Justins145bhpMK1 on 14 September 2005, 13:25: Right, ive replaced the oil pressure switch.

Seemed to be better but now the oil pressure light comes on when the engine is warmed up and has been idling for 5 mins. It comes on at idle, blip the throttle and it goes, comes back occasionally.....????
Title: Re: Oil light
Post by: Justins145bhpMK1 on 15 September 2005, 12:13: Put a bit more oil in and that seems to have helped a little.

Tried disconnecting both pressure switches, the one in the head and the one on the pump when the pressure light flashes and it continues to flash??? help!!!!!!
Title: Re: Oil light
Post by: keefusg60 on 15 September 2005, 21:36: Mine comes on intermittently on my Mk1 with the buzzer sound too. It lasts for about 20 seconds and then disappears for a week or 2. :undecided:
Title: Re: Oil light
Post by: mk1 on 16 September 2005, 20:14: Hi, there are two oil pressure switches on the engine and if either of the switches goes faulty it should operate the light and buzzer. If you have checked the oil pressure with a guage and it is within specs, go for the switches. One of the switches is normaly open contacts and the other is normally closed. To test these I use 2 test lamps, one end of each connected to battery positive and the other end of the test lamp to each switch, then with engine stood one lamp should be lit, and when you start the engine it should go out and the other should light. Watch for either of them flickering or not changing over. If you do replace the switches, make sure that you put the correct switch in the correct location. I have also seen some cars with the strainer on the oil pick up pipe blocked, this causes the oil pressure to drop as the engine revs are increased, drop the sump off and clean out.
Steve.
Title: Re: Oil light
Post by: BlueBullet on 18 September 2005, 18:38: I had this problem on my mk1 1.8gti, Checked the oil pressure with a reliable gauge, pressure was within spec at idle and above 2000rpm. replaced one pressure switch, problem came back, replaced the other switch, problem solved!!!! :grin:
By the way there are good quality switches and cheap sh*t ones. Ibought the first ones from euro car parts which lasted about 3 months, then had to replace them again. I bought genuine from VW in the end. :cool: