Temp Gauge Pegged After Swap

[base93lumina]

So i just bought a new temp sending unit to make the gauge on the Euro cluster work. I got it installed today and it slowly climbs to 260 (takes about 1 minute from cold) and just sits there, and trips the light. Now, the fans do not come on, and its not any hotter than usual out the vents, but im wondering what the deal is? Hoses feel normal. For the cluster conversion the one wire sensor in the rear head is the one to replace right? Before it would stay full cold, and never move (for obvious reasons lol) Now, i did teflon tape the threads on the sender (as i usually do with threaded coolant taps). Was taping it a bad idea? What happened here?

Edited February 29, 2012 by base93lumina

[base93lumina]

Man this site is dead! Anyone?

[AL]

Is replacing the sender necessary for the new cluster?

[3pt1lumina]

Yes you have to replace the sensor. When I did the swap on my car, I bought a harness from stockgp, he used to make them based on which cluster you had. For me, I put in a 90 Cluster ( I wanted year specific) so mine has Oil, Temp. I had to replace both sensors, both work fine. However, before I knew I needed the adapter harness, I tried plugging and playing, and the same thing you've described happened. It has something to do with wires from a base cluster not being in the same spot as the UB3 cluster. Someone else will chime in, I have no idea how to correct your problem, but I know that's what the issue is. I am not a wiring guy!

[White93z34]

almost sounds like a bad sensor to me, this is asuming you did the rewiring/repinning from base to full gauge cluster right.

[base93lumina]

I followed the instructions on this site to the tee! Before, with the "light" sender, it read full cold. Now with the "gauge" sender, it reads full hot in a matter of a minute. Unless i got air in the system...but after a couple days of driving you would think that air pocket would subside??? Is the teflon tape blocking the signal perhaps?

[White93z34]

teflon tape would not bother anything, dont worry about that.

 

sounds like you might have a bad sender out of the box. perhaps worth checking that no wires are chafed or pinched.

[3pt1lumina]

I went with an AC Delco Sender.... I'd try a new one then.

[base93lumina]

okay will do thanks guys

[base93lumina]

So i got to the bottom of this. Turns out the brand new sender was bad. Rather than screw with it, i decided to get a coolant temp sender for an 01 Lumina and just lengthen the wire to the connector. Using the 3-wire sender seems to have been a great idea as its working perfectly now! Thanks guys!