Opinions on the use of di-electric grease for impact sensor grounds

[jrd1990zr1]

Three years or so ago when I first got my Z it had front impact sensor ground fault in the SIR system. I fixed it not using di-electric grease by cleaning it up and using a star washer.

On the way to have it state inspected today the INFL REST and seat beat came on. Got a Code 26 again, bad ground under the AC box.
Before I pull it apart and clean it up, should I use di-electric grease on the connection??? Or not???

Thanks, :cheers:

[GOLDCYLON]

It wont hurt use it. IMHO

[Paul Workman]

Used it all the time on equipment ground lugs, etc on board (Navy) ships where exposure to salt water was a killer if the connections weren't coated (or painted, in some cases).

I use it w/o problems. I think it would also be worth considering for battery connections, unless you have some of the spray- on inhibitor for that.

The stuff is pretty much inert, I believe, i.e., silicon based it doesn't react very easily with (electrical) materials, as a rule.

I agree with the G'Cylon...couldn't hoit!

FWIW...Your mileage may vary!

P.

[tomtom72]

I used it as per Gordon's instructions and still got the code eventually.....maybe I didn't use enough of it or not enough sanding of the chassis paint? Anyway, I used it again when I redid the repair/re-cleaning.

I vote that it can't hurt. I was thinking that maybe after the cleaning and the sanding & reassembly the hold down tab & bolt head should be sprayed with chassis black to seal it from the moisture? Or the use of T- 9 Boe-shield or it's equivalent could be used in place of the paint. I may try that if it happens again. MM used to do this on all the exposed electrical connections on the power train back in the 70's & 80's at any point where the connection was exposed via an 'eye'.
:cheers:
Tom

[flyin ryan]

X2 for using it....

[jrd1990zr1]

Thanks Guys!

I'll use it.

John :cheers:

[Marc Haibeck]

If you did a good job sealing the sensor, it's probably not the problem. You can measure the resistance from the stainless steel plate that holds the sensor to ground. If the resistance is less than .3 ohm it's good.

There are two connectors that are in the circuit to the sensor. They are in series and need to have low resistance just like the sensor.

There is a round yellow connector from the sensor at the rear edge of the right hush panel. It should be opened. The gold connector pins should be wiped clean and washed with electrical contact cleaner. Insert the connector twice to wipe the contacts.

There is the connector to the DERM. It's under the front edge of the hush panel. It's colored yellow too. Give it the same cleaning treatment.

The error code needs to be cleared via the procedure in the service manual.