Temperature sensor problem

[x3me__]

Hi!

So i had to remove the intake manifold on my m42 to change some coolant tubes.

I removed all the 3 sensor conectors and kept them in order , i mounted all again but now my temperature gauge doesnt even move a single bit.
When the car is working after like 10 secounds the needle jumps to full hot in about 3 secounds.

I didnt even touched the temp sensors so i guess they are fine cause it was working properly before the car stoped.

I didnt mounted the MAF but i guess it doesnt make it not work

I did changed my car batery too but its one equal to the one it had.

Its and e36 and iv done the gauge test and all works fine.

Thanks in advice

[tmoretta]

My coolant temp. gauge also jumps about.  Any ideas?

[bmwman91]

Turn the car on and give the dashboard a whack in the corner where the temperature gauge is. Most E30's I have seen and owned had sticky needles and a smack would get them going. The issue is usually a cracked trace or dirty ground in the cluster. Otherwise, maybe the wire broke near the connector on the engine.

[x3me__]

Well, didnt come here in a while but i figured it was a bad ground conection working fine since then