quote:Originally posted by Mark Charlton:
I haven't tried the Purple Ice, but am using the Norosion which is supposed to help in a similar way (but not in my experience). I am not sure which ground affects the sender, but maybe a "fattie" will help me figure things out.
The ground wires are daisy-chained together for each gauge and they run to the primary ground post, which is located on the chassis firewall just behind the speedo. There are between 13-17 ground wires that attach to that post. My recommendation would be to create a new ground post on the firewall and ground your gauges to it directly. From what I've learned, a poor ground is the main source of electrical frustration; however, it does sound like you have a legitimate cooling issue - so this would likely not fix the issue.
My limited knowledge tells me that you have air in your system ...
EA