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Thread: TD5 Low Oil Pressure Alert

  1. 15th December 2018, 03:50 PM #1
    gavinwibrow's Avatar
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    TD5 Low Oil Pressure Alert

    Anyone happen to know at what oil pressure the oil warning light is supposed to come on in a TD5?
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  2. 15th December 2018, 03:59 PM #2
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    Iirc it is about 7.5psi.
    You do not want to see that thing shining back at you while the engine is running AT ANY TIME
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  3. 15th December 2018, 04:17 PM #3
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    Quote Originally Posted by justinc View Post
    Iirc it is about 7.5psi.
    You do not want to see that thing shining back at you while the engine is running AT ANY TIME

    Thanks Justin. I also have an oil pressure gauge with a low pressure audio and flashing alert. The main reason for the query is that sometimes while idling back it drops to apparently about 8-10 psi and alarms at the lowest drop point then the needle swings back , but there is no light/alarm from the dash, nor have I ever had one.

    No sure if its a just dodgy connection, or maybe normal behaviour for this gauge, but based on your info I'm going to drop the gauge alarm to 6psi and see if that fixes it.
    D4 MY16 TDV6 - Cambo towing magic, Traxide Batteries, X Lifter, GAP ID Tool, Snorkel, Mitch Hitch, Clearview Mirrors, F&R Dashcams, CB
    RRC MY95 LSE Vogue Softdash "Bessie" with MY99 TD5 and 4HP24 transplants
    SADLY SOLD MY04 D2a TD5 auto and MY10 D4 2.7 both with lots of goodies
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  4. 16th December 2018, 05:05 AM #4
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    The factory fitted oil pressure warning is a switch directly wired to the instrument pack and it's closed to earth so as long as it comes on with ignition and goes out when the engine was started the switch is there, on the Td5 the warning comes on if the pressure drops below 6 psi
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  5. 16th December 2018, 09:28 AM #5
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    Bohica
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    I'd say that, in line with the coolant temp gauge the oil pressure light comes on at 2 psi below the pressure needed to fully lubricate the engine
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