sagaris oil pressure when cold?

[rup xia455]

hi,just bought wittys sagaris,love it but oil pressure reads very low at tick over ie 2-3 psi,every time i stop at lights etc the waring buzzer goes off. tick over is at 650-700,have had other tvrs so i know of problems.but its just a bit of a worry,is it normal? thanks

[noddy2]

First off,tickover is too slow,should be 950 to 1000 rpm when hot.
This should bring oil pressure up to nearer 10psi which is more like it.
Also the reading is not actual but via ECU, if possible get a propper wet test of you oil pressure by a deccent garage.
10 psi per 1000 rpm hot is a good guide figure,but there seems quite a bit of variation from car to car.

Edited by noddy2 on Monday 13th August 20:24

[noddy2]

Have just read your post again is the reading you have quoted hot or cold.

Edited by noddy2 on Monday 13th August 20:27

[hollowpockets]

^^^^^^^^^^ that psi will be hot, no chance its ever that low when cold unless it has major problems, i had the sme problem when my car idled at 6-700rpm, have it adjusted upto 850-950 and it will be fine, also have a quick check for leaks under the engine to be on safe side

[rup xia455]

when car is first started pressure reads at 22ish but as car heats up pressure drops util it reads 2-3psi,thanks for reply,has helped put my mind at ease

[Jappo]

I often get the low oil pressure warning from the ECU as well when starting up from cold, albeit very briefly - I'm told it's normal.

[smithyl23]

stone cold my oil pressure is 50-60 psi 850-900 tick over. Sometimes 70 psi when really cold. just had new oil pressre sender as well.

Oil @ 70-80 degrees, pressure at 900 rpm is 15-23 psi

[VARLEYHYD]

rup xia455 said:

hi,just bought wittys sagaris,love it but oil pressure reads very low at tick over ie 2-3 psi,every time i stop at lights etc the waring buzzer goes off. tick over is at 650-700,have had other tvrs so i know of problems.but its just a bit of a worry,is it normal? thanks

Get it checked out doesn't seem right.
Tickover has big influence get it to 800-850 (with aircon and heater fan off)
Oil; if its 0W-40 in hot weather i think its too thin
Sender unit can have air locks/ unreliable on eartlier cars

[MADT350]

sounds like you need a new oil pressure switch. there £120 fitted from TVR Power. its nothing to worry about, its a common fault with those switches

[hollowpockets]

MADT350 said:

sounds like you need a new oil pressure switch. there £120 fitted from TVR Power. its nothing to worry about, its a common fault with those switches

or 50 badgers if you can use a spanner and have 5 minutes spare