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-   -   Temp and Fuel Gauge all bouncy.. (https://rennlist.com/forums/928-forum/1356657-temp-and-fuel-gauge-all-bouncy.html)

Speedtoys 07-13-2023 07:08 PM

Temp and Fuel Gauge all bouncy..
 
I did a pod refresh, new bulbs, new foil..cleaned the connection ends all studs and nuts..everything..and I still have these two gauges that just don't work right.

Pod's gotta come out again, but what should I be looking at this time?? Nothing could possibly be cleaner...I wouldn't think...

https://cimg4.ibsrv.net/gimg/rennlis...bacfeb9e2.jpeg
https://cimg5.ibsrv.net/gimg/rennlis...bc27cc985.jpeg
https://cimg6.ibsrv.net/gimg/rennlis...e0e4a45c3.jpeg

GregBBRD 07-13-2023 10:25 PM

If it wasn't like that before you worked on it, that probably eliminates the gauges and points to a connection issue.
Both of those gauges come through "plug A"...that would be where I would check, first.
Sometimes a reach behind and a wiggle on the connector will cure things.

The Forgotten On 07-13-2023 11:08 PM

I had an issue with my fuel gauge where the wire from the sender under the pod was a bit corroded. A wiggle fixed it as suggested above.

Couldn't hurt to hit the pins with some deoxit and a q tip.

Mrmerlin 07-13-2023 11:35 PM

I would suggest to put the D 100 on the connectors only ,
spraying the foil with the D 100 can cause the metal tabs to de laminate . BTDT

Speedtoys 07-13-2023 11:40 PM


Originally Posted by GregBBRD (Post 18906411)
If it wasn't like that before you worked on it, that probably eliminates the gauges and points to a connection issue.
Both of those gauges come through "plug A"...that would be where I would check, first.
Sometimes a reach behind and a wiggle on the connector will cure things.

These were why went in there in the first place...but remained funky.

Speedtoys 07-13-2023 11:40 PM


Originally Posted by Mrmerlin (Post 18906504)
I would suggest to put the D 100 on the connectors only ,
spraying the foil with the D 100 can cause the metal tabs to de laminate . BTDT

Foil stayed dry, was no need, only the connectors and then cleaned of residue.

928 DesMoines 07-13-2023 11:44 PM

I had a similar issue on my 951. Noticed that the gauge (temp/fuel) were only bouncy when I turned the lights on. Cleaned battery grounds and checked brown wires. Not sure which random ground cleaning cured it, but that was it.

Petza914 07-14-2023 08:59 AM

Remove the stacked ground wires down by the pedals and clean them and the point where they attach.. Clean the main alternator ground. That oscillation in the needles is sometimes from the rotation of the alternator.

NewToPig 07-14-2023 10:20 AM


Originally Posted by Mrmerlin (Post 18906504)
I would suggest to put the D 100 on the connectors only ,
spraying the foil with the D 100 can cause the metal tabs to de laminate . BTDT

100% they curl up and give you the copper middle finger of death

Alan 07-14-2023 11:53 AM

If multiple gauges are affected in the same way at the same time its a grounding issue - focus there .

Alan

GregBBRD 07-14-2023 05:27 PM

I'm not going to say that it isn't a good idea to clean all of the main grounding points, however I kinda doubt that removing the cluster and working on it is going to suddenly cause a connection issue at a remote bolt though grounding point.
.....Definitely not where I'm going to tell one of my guys to go, first.
Now if the problem existed before removal....that's a whole different story.

Speedtoys 07-14-2023 05:38 PM


Originally Posted by Alan (Post 18907096)
If multiple gauges are affected in the same way at the same time its a grounding issue - focus there .

Alan


Just those two, were like that before and after.

I cant believe I didnt touch the ground point back there...

Alan 07-14-2023 06:35 PM

I'm not talking about all the ground points or even just the chassis ground points. This IS clearly a grounding issue from the symptoms - I'm not just guessing. Look at the chassis grounds specifically for the pod and also all the ground connections inside the cluster to the gauges. It must be a common point to all the gauges affected. As Greg says it is most likely something you touched - quite possibly internal to the cluster. On re-reading it seems you've had this a while - however its still a local issue to the pod grounds.

Alan

Speedtoys 07-14-2023 07:05 PM


Originally Posted by Alan (Post 18907811)
I'm not talking about all the ground points or even just the chassis ground points. This IS clearly a grounding issue from the symptoms - I'm not just guessing. Look at the chassis grounds specifically for the pod and also all the ground connections inside the cluster to the gauges. It must be a common point to all the gauges affected. As Greg says it is most likely something you touched - quite possibly internal to the cluster. On re-reading it seems you've had this a while - however its still a local issue to the pod grounds.

Alan

Well..like I said it was there BEFORE as well, nothing I touched started it. I was doing the foil and cleaning EVERYTHING (except that damn ground point back there) in the process.

Yup..we're on the same page.

Which plug is "A"?

rcrone928 07-14-2023 08:18 PM

Allen, just where are the pod grounds located? Just asking for future refs.


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