Hey guys...I just got the VDO gauges for my EVO..I hooked up the boost pressure fine...and ran all the power correctly to the back of the gauges. For the Oil temp gauge you hook a positive and negative wire to the back of the gauge...and then a 3 signal wire to the sender (which is a temp sender that replaces the factory oil plug) Anyways the gauge is maxed out constantly....even after I hooked up the gauge. Everything is hooked up correctly and is getting voltage....any ideas on what is wrong...or what i could do?? Thanks!

 

bump

 

Sounds like bad wiring. Disconnect the wire to the temp sender, if it still goes up when you power it up it's bad wiring or faulty sender. Also make sure the signal wire to the temp sender isn't grounding out with anything but the sender.

 

Yeah I'll give that a shot...thanks. I know for a fact If I unplug the wire it will still go up....I tried regrounding the power to the gauges....and making sure the wire was connected to the sender. I don't know how the signal wire could be grounding out on anything else...its very heavily insulated. Does the pegging out of the gauge indicate that its getting no signal basically? I've e-mailed 42 and am waiting back for a reply....I used the wiring kit they provided which seemed very high quality. aHHHH DAMMITTT...it just sounds like for everyone else it just worked perfectly right away...I'm not a wiring moron that doesn't know the difference betteen + and - either!! How frustrating.

 

Without seeing I can only make guesses.... but if I pull off the sender wire on mine the needle goes up fully pegged. So, that being said It appears you have power and ground, but the signal wire isn't right and isn't getting the signal from the sender correctly some how.....

 

If the needle is pegged then drops when you pull the signal wire you have a short to ground within the sensor (if this happens then the sensor is bad). You can do a easy ohm check with the sensor also. Most oil temp sensors are usally installed with a aluminum washer.

Winston

 

nah its pegged no matter what. I talked to 42 and the are sending me a new gauge I guess it is defective. Thanks for the help though!