maXbimmer Forums

maXbimmer Forums (
-   E30 (1983 - 1991) (
-   -   Testing OHM reading on Coolant Temp sensor... (

Wingking 05-21-2008 04:28 PM

Testing OHM reading on Coolant Temp sensor...
...might be onto something, where my Coolant temp sensor wiriing is ****ered..

which setting should I set my multimeter at, and what reading am I looking for?

everlast 05-22-2008 11:21 AM

You are looking for resistance values of about 2100 to 2900 ohms when completely cold, and 270 to 400 when the engine is warmed.

So set your meter to read resistance, and choose a scale that goes to about, say, 10,000 ohms or 10K. 5K is fine too, in fact 3K would be fine as long as the values are under 3K.

It really depends on what values your meter's scale has. Usually there is always one around 20K which would be fine too.

Put the leads on the sensor and see what comes up! If you get 1 or 0 you've got the scale set wrong. (At least, that's what mine does.)


everlast 05-22-2008 11:22 AM

I think the Bentley has a chart with more accurate values, but I don't have it handy. The above are from the Haynes.

El Gato Liso 05-22-2008 11:25 AM

haynes ftw

everlast 05-22-2008 11:28 AM

Ya wingking, you should at least download the haynes to have it handy. Google it, its all over the place.. bit torrent too.

I have never seen the e30 bentley in pdf tho. :(

Wingking 05-22-2008 12:30 PM

awesome thanks Everlast-

also, I have a E30 haynes manual, I NEVER refer to...

I'll attack this 2nite.

everlast 05-22-2008 12:56 PM

In the words of Adam Savage.. "Well there's yer prahblem!" Manuals are actually pretty good on these simple cars. There is a great troubleshooting section in both manuals. I would not trust either 100%, as I've seen one or the other wrong at various points.

Ej_Red 05-25-2008 06:06 PM

All times are GMT -4. The time now is 09:21 AM.

Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Maxbimmer Copyright 2001 - 2018