Gauge cluster acting wacky

[Spin Daily]

Ok, I did try to search but came up empty.

I just bought a new to me 92 TSi Awd that has an EVO8 ecu swap done to it. The car idles fairly well, 2k after cold start up then it drops down below 1k.
Then the with the idle steady, the needle on the tach will drop to zero but idle is still fine.

Also the fuel gauge does not read correctly.

My question is, does the ecu control the read outs of the cluster or is there sensors I need to be looking at? Is this normal behavior with a swap like thin into a 1g?

I was thinking of replacing the cluster since they are pretty cheap to come by.

Thanks for any help!

 

[GsxEcutioner]

i am pretty sure its the cluster fail.

 

[Spin Daily]

thanks for the reply.

I have a new cluster on the way.

 

[LiquidX]

The gas gauge reading incorrect is generally just the way these cars are and it's the sending unit. Now your personal incorrectness could be a gauge fault as well.

http://www.dsmtuners.com/forums/newbie-forum/400571-tach-stopped-working.html

 

[dsmornothing]

The ECU does control the majority of your cluster, Its possible the cluster is getting the wrong signal from the EVO ecu?

 

[Spin Daily]

Thanks for the replies.

In preparation of the spare cluster coming, i am going to remove the one in it and clean up the connection points and whatnot see if that helps.

 

[Spin Daily]

Finally got around to swapping out fuel sender units today.

Bought a replacement unit from a member here on tuners; had a small snafu but everything got swapped out and the fuel gauge in the cluster works once again!

 

[romeen]

If your tach is still acting funny then check the power transistor unit too. The white wire at the PTU is where the tach gets it's signal from. That's how it is on my 2G. I'm not completely certain that this is true for 1G's however. Maybe someone more familiar with 1G's can jump in and verify.

 

[Spin Daily]

thanks for the tip Romeen, i'll check it out.