oil pressure mystery This topic has 5 replies, 2 voices, and was last updated 4 years, 10 months ago by Gerben Haringsma. Viewing 5 reply threads Author Posts 5th January 2018 at 14:24 #10989 Gerben Haringsma @gerbenharingsma ignition off , no oil pressure ignition on, oil pressure at 5 start engine,oil pressure at 7 rev up moves out of scale. cleaned contacts on instrument gauge. changed sender unit to new one. Visualy checked wires as much as possible. any one,to help solve the mystery ? 11th January 2018 at 21:29 #11094 Gerben Haringsma @gerbenharingsma mystery solved ! a resistor has to be instaled,getting the 5 back to zero. 11th January 2018 at 22:03 #11096 Laurence Jones @laurence_admin Hi Gerben Haringsma @gerbenharingsma While I couldn’t solve your problem, I do recognise the solution – on my XJS 4.0 litre coupe there is a mysterious tiny bulb in the engine bay, that when removed makes the oil gauge at the top. Glad you solved it. Laurence 11th January 2018 at 22:54 #11100 Gerben Haringsma @gerbenharingsma mysterious car,the jaguar. the tiny lamp was your resistor ? 16th January 2018 at 22:12 #11276 Gerben Haringsma @gerbenharingsma the resistor should be 15 ohm. 16th January 2018 at 22:13 #11278 Gerben Haringsma @gerbenharingsma sorry 150 Author Posts Viewing 5 reply threads You must be logged in to reply to this topic.