ok so today i was trying to hook up my oil temp and trany temp gauges, and i cant get them to work. i tested it and all the wiring is right, the problem is that the sending unit is supposed to ground its self out and since there both threaded into aluminum they dont. but even when i put a ground wire onto the sender i still cant get them to work, my oil pressure and water temp that go into the block both work fine...
i cant figure it out... any idea's?
they just stay at zero... for some reason i though aluminum didn't ground. but either way i don't know whats up with them
Try touching the sensor wire to ground. The senders don't create voltages, they create resistances, so if you ground it, the gauge should go all the way to the side. If not, then its a wiring problem and you have a break in the wire somewhere.
4cyltuner.com - Information Source For 4 Cylinder Tuners
Buy stuff from CarCustoms Ebay! Won't be disappointed!
ya thats why i know its not a wiring problem, i grounded the sender wire and the needles move up like there supposed to, so then i got to thinking that maby aluminum wasn't a ground but aparently im just crazy
Well my head is aluminum, my extension pipe is cast iron that T's to my two sending units, and both of mine work just fine.
Can you swap your water temp sender out for your tranny or oil temp? They should both have the same resistance values...
4cyltuner.com - Information Source For 4 Cylinder Tuners
Buy stuff from CarCustoms Ebay! Won't be disappointed!
well aparently they take a realy long time to start working the first time? i drove around for like half an hour, get home still thought it wasn't working, then i noticed the oil temp one was juuuuust barly above zero so i keept driving until they both warmed up, seems to be working fine now tho they just took forever to start moving.
oil temps take a long time to heat up whe its cold
Trannies do too, especially when highway driving, city driving it goes up pretty quick, but on the highway there is a lot more air going over the tranny cooler so it takes much longer to go up.