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| Technical Questions Have a specific technical question about your car or a specific car? Post it here and get it answered. |
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July 2nd, 2006, 05:17 PM
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#1 (permalink) |
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Member
Join Date: May 2006
Posts: 54
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Mk II and oil pressure
Ok...so I thought I was an anomalie, until a read a thread on the Air Riders site (Edm).
The gist of the story: oil warning comes on, seemingly at random, in my Mk II. Can't forceably reproduce it...seems to go off around the 2-2500K rpm mark.**Usually in traffic, and slowing under compression coming to a light. So, in this thread, the recommendation is to run a thicker oil in the summer (20/50 for example), and thinner (5/30) in winter. Ok, makes sense to make the symptom go away.**But I'm not quite buying the "use different oil" to get rid of a problem.**Seems like more of a band aide, than a root cause solution (can ya tell I'm in IT??). 1) Could the motor be running too hot, causing the oil to thin out? 2) Poor oil delivery? Are the 8V's known for this? Bring all theories to the table...:cheers: |
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July 2nd, 2006, 06:45 PM
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#2 (permalink) |
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Senior Member
Join Date: May 2006
Posts: 138
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RE: Mk II and oil pressure
make sure you have the correct o/p switches in the car and that they are wired up correctly, and that they work. one is low pressure, one is high. if they are connected backwards, it may exhibit some of the problems that you're having. i think the 0.3 bar is blue/black wire and the 1.8 bar is yellow wire. they are simple pressure switches that open or close the circuit. 0.3 opens the circuit, 1.8 closes it. gauge clusters have been known to buzz continuously also. you can also pull a switch and install a oil pressure guage in its place for peace of mind, since it is sunday...
try that, return with results. |
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July 2nd, 2006, 07:47 PM
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#3 (permalink) |
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Senior Member
Join Date: May 2006
Posts: 106
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RE: Mk II and oil pressure
Many MKII's tend to have this problem. They are meant to be run with thicker oil than newer cars. It is not just a band-aid solution.
I run 15w40 year round and have no problems. Another area that can cause grief is the filter. Some people have problems with pressure when using cheaper filters such as FRAM. You're best off using OE, Bosch, Mann, or the like. |
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