A puzzle
#1
A puzzle
Anyone have any idea why this would occur?
Driving along in Light traffic, 100kph, 30C, Efan On. Needle is sitting right at the top of the N. Maybe a touch above. I thought it higher than it should be, not bad, just odd. For some reason I switched off the efan. Needle iimidiately dropped to just above the bottom of the N. Right where I’d expect it to be in these conditions.
How? Why?
Heres a pic for your trouble.
Driving along in Light traffic, 100kph, 30C, Efan On. Needle is sitting right at the top of the N. Maybe a touch above. I thought it higher than it should be, not bad, just odd. For some reason I switched off the efan. Needle iimidiately dropped to just above the bottom of the N. Right where I’d expect it to be in these conditions.
How? Why?
Heres a pic for your trouble.
#2
My car's temp needle moves up or down a good 1/8th of an inch immediately if I turn anything on/off, like even the fan on medium. Far too quick to reflect an actual increase or decrease in temps. It could be nothing more then a voltage issue affecting the gauge needle way too much. Can you replicate this while idling? Like say..for example.. using jumpers to attach a dead battery to your running car and see if that draw causes the gauges to move around?
#3
#4
What about just the current draw possibly causing the instruments to lose some ground connection? Check your terminals. Might just be an electrical gremlin. Without a PROPER temperature gauge running independantly of the instrument cluster, it can be hard to justify if the temperature increase is just a gremlin or if it actually IS a problem...
#5
Grant, nope! First thing I checked.
Certainly could be voltage change, but turning OFF a 17amp pull would make it rise if it were running low voltage right?
The drop I saw appeared to be a real reduction in temp. Not instantly. That was a poor word choice. It dropped over two seconds.
Im on other unrelated issues today. Four new injectors, a nos Vintage Performance GM module for the amp and a replacement vac advance unit. If it happens again after all that I’ll follow up with more details.
Certainly could be voltage change, but turning OFF a 17amp pull would make it rise if it were running low voltage right?
The drop I saw appeared to be a real reduction in temp. Not instantly. That was a poor word choice. It dropped over two seconds.
Im on other unrelated issues today. Four new injectors, a nos Vintage Performance GM module for the amp and a replacement vac advance unit. If it happens again after all that I’ll follow up with more details.
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Grant Francis (06-24-2018)
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