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E34 (1989 - 1995)

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Old 11-07-2012, 09:21 AM
robertobaggio20 robertobaggio20 is offline
Location: earth
Join Date: Oct 2009
Posts: 3,403
Mein Auto: car
Temp gauge/ sensor /alarm questions

Hi everyone,

1. What is the actual temperature in the cylinder head when the instrument cluster's gauge shows 1/4, 1/2, 3/4 and at red ? (My engine is an M50 but do the figures apply to all E34 engines as well ?)

2. The two coolant temperature sensors which are screwed into the cylinder head (on to inform the dme and the other to inform the instrument cluster's gauge)...are their probes in direct contact with the coolant itself ? Or are they just in contact with the metal of the cylinder head ?

3. Is there a simple way to create and install a buzzer alarm as an overheat warning, say when the needle reaches 3/4 ? Can it be fashioned from the instrument cluster's existing wiring ? Or do you know of any simple, cheap and easily installed device that will generate an audible alarm in the cabin when the temp reaches 3/4 ?

Thank you.

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