HELP! Oil pressure and temp gauge issue....
 

I acquire some vdo gauges (volt, oil pressure and oil temp) off of a VW rabbit from a friend and it doesn't seem to work correctly on my CRX. The only one that works fine is the volt gauges. I have both the oil sender and oil temp sensor (from the rabbit) for the other two gauges, but it's acting weird. After wiring it all in, I turn my ignition to ACC and the pressure gauge shoots to max and doesn't want to back down even when I turn off the ignition unless I unplug wiring harness from the gauge. I've try two oil pressure sender and it's doing the same. The oil temp kinda stay at the coldest with just a twitch, maybe because I haven't turn it long enough.

I'm pretty sure all my wirings are correct. There are only 3 wires each on the oil temp and oil sensor gauges (ignit., grnd and signal). So any suggestion as to what may fix it would be appreciated.

Re:HELP! Oil pressure and temp gauge issue....
 

Yes there are ign, ground, signal for the gauge, but you need to ground the sending unit aswell if not screwed into the block. I ran into the same problem. After grounding the sending units, they work fine.

Re:HELP! Oil pressure and temp gauge issue....
 

Kool, I'll try that. Thanks

Re:HELP! Oil pressure and temp gauge issue....
 

how would you go about grounding the sending unit in that manner? Just ziptie a wire to it? solder?

My gauge does messed up things like bounce around. The signal wire is on a threaded post on the sender, just attach the ground there?

Re:HELP! Oil pressure and temp gauge issue....
 

How do you ground this oil sending unit? Cause it's not directly into the engine block. I've tried soldering a ground wire from oil sender to the block, but it's still the same.

How did you do yours?

Re:HELP! Oil pressure and temp gauge issue....
 

Ah, never mind.
I got it fix. I ran a wire from my T's into a good ground and whoala.....everything works beautifully.