solentboats
New member
Hi All
Some advice please.
I am well into a sort of DIY restoration of my 928 s4 1990 during lockdown.
I`ve only done about 500 miles in her whilst I worked out what I needed to fix.
The engine feels strong and starts and runs very well.
So I`ve done the following :-
Suspension, brake lines and brakes completely replaced - no problems.
Engines plugs and ignition electrics inc most sensors all replaced - no problems.
Radiator, water pump and cooling fans completely replaced, evans waterless coolant and a lower temp thermostat - no problems.
Both fuel pumps and filter replaced, you won`t believe how much rubbish was in the tank - no problems.
Auto gear box filter and oil inc torque converter drain - no problems.
That`s was just some history but my real problem is as follows.
The volt meter, coolant temp and oil pressure gauges did not work so with all 3 being faulty I removed the instrument binnacle.
After a good clean the volt meter and coolant work perfectly, I`d already changed nearly every engine sensor so great.
I`ve also got a working oil pressure gauge but it`s the oil pressure that concerns me. It now works and below is what I get :-
At cold start it`s 5 bar.
When warmed up and driving along 2 -4 .
When warm and then sat at idle it drops and drops and gets to 1 bar after say 3 minutes ( engine already at temp ).
I then get a warning saying low oil pressure or words to that affect.
I`m running her on Mobile 1 0w 40 as recommended by Porsche but with 130K on her I`m thinking she may need a 50 or 60 oil.
Your thoughts please and thanks in advance.
Matt
Some advice please.
I am well into a sort of DIY restoration of my 928 s4 1990 during lockdown.
I`ve only done about 500 miles in her whilst I worked out what I needed to fix.
The engine feels strong and starts and runs very well.
So I`ve done the following :-
Suspension, brake lines and brakes completely replaced - no problems.
Engines plugs and ignition electrics inc most sensors all replaced - no problems.
Radiator, water pump and cooling fans completely replaced, evans waterless coolant and a lower temp thermostat - no problems.
Both fuel pumps and filter replaced, you won`t believe how much rubbish was in the tank - no problems.
Auto gear box filter and oil inc torque converter drain - no problems.
That`s was just some history but my real problem is as follows.
The volt meter, coolant temp and oil pressure gauges did not work so with all 3 being faulty I removed the instrument binnacle.
After a good clean the volt meter and coolant work perfectly, I`d already changed nearly every engine sensor so great.
I`ve also got a working oil pressure gauge but it`s the oil pressure that concerns me. It now works and below is what I get :-
At cold start it`s 5 bar.
When warmed up and driving along 2 -4 .
When warm and then sat at idle it drops and drops and gets to 1 bar after say 3 minutes ( engine already at temp ).
I then get a warning saying low oil pressure or words to that affect.
I`m running her on Mobile 1 0w 40 as recommended by Porsche but with 130K on her I`m thinking she may need a 50 or 60 oil.
Your thoughts please and thanks in advance.
Matt