i installed my stewart warner gauges that i got from 42draftdesigns last week. i got the whole install kit from them. i installed the sender in the blank slug near the oil filter. the problem is the readings i'm getting. i know the pressure will be different in different gears and if your idling and if the oil is warm or not but thats not the problem. if i give it the slightes amount of gas, the gauge goes wacky. it bounces all around and will go from 0 to 100 and anything inbetween so something must be wrong.

i checked all the connections and they seem fine and tight. the only things i can think of would be that i grounded it to a ground in the dash and not to the engine like the instructions said to do (so maybe it has to be on the engine to read properly), i have a bad sender (or the sender isn't tight enough to make a good enough ground), or the gauge itself is bad. i talked with another evom member who has the same setup and he said his oil pressure gauge did the same thing for a week and then stopped. mine seems to be getting worse. any suggestions guys? all thoughts are welcome. thanks.

 

Sounds like a bad ground to me. Re do the ground wire, I had a similar problem on a AFR gauge being over reactive and it was the ground in the dash as well. I grounded to the ecu sensor ground wire and it fixed it.

 

yeah i think i'm gonna try running a new ground when i hook up the egt probe.

 

I just grounded mine to a large bolt under the dash. Mine works fine, but I have the VDO gauges.

 

I too have the VDO gauges. I just installed the oil pressure gauge last night. It seems you highlighted all the major components to trouble shoot. I would check your connections with a voltmeter as well. I did a lot of splicing so I went over all my connections, includijng the grounding. Hope everything works out.

 

i am having the exact same problems as the thread starter. any ideas. how would i know if the sender is bad?

 

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