Bad crimp connections

[Marc_B]

I have an EI MVP50 and I've had several temp probe connections become erratic.  Thought this was interesting to see the temp probe connection breaking on my engine monitor data, and also interesting that does not fail to zero reading...  Had the crimp connector replaced and all's well.  I've had to do the same on a couple of the EGT & CHT probes. 

Looks like EI now offers a different connector than the spade crimp connectors that came with unit...I'll have to start replacing with these and see if I notice a difference in longevity.  Have any of you used the new EI OLC-2 connectors and if so, did you locktite the screw?

[EricJ]

Unreliable crimps are usually because the crimp wasn't done properly, not because the connector was faulty.

[PT20J]

And, bad crimps can come as a result of using the wrong tool. There are a lot of crimp tools. Some are incredibly expensive. Try pricing the DMC tool and dies for the double 4-way crimps on the machined pins Mooney uses for the CPC connectors.

Skip

[LANCECASPER]

While bad crimps are certainly possible, this has been way too common of a failure on the EI MVP50. Glad to see that they finally came up with another connector.

[M20F]

On 6/19/2022 at 12:43 PM, LANCECASPER said:

While bad crimps are certainly possible, this has been way too common of a failure on the EI MVP50. Glad to see that they finally came up with another connector.

I would echo this the original connectors suck and I have been slowly replacing mine.  New ones are infinitely better.  

[Marc_B]

1 hour ago, M20F said:

I would echo this the original connectors suck and I have been slowly replacing mine.  New ones are infinitely better.  

@M20F did you use thread locker on the Allen screws on the new connectors?

[Wildhorsetrail]

I used some of those connectors recently, and it didn't seem to me like there would be any need for thread locker.

[N201MKTurbo]

I used those EI connectors on all my sensors when I redid my engine. They have been flawless so far. They fit in the 1/4 inch spaghetti tubing and make a neat wire bundle.

https://www.iflyei.com/wp-content/uploads/OLC-2_Instructions.pdf

 

Edited June 21, 2022 by N201MKTurbo

[M20F]

6 hours ago, Marc_B said:

@M20F did you use thread locker on the Allen screws on the new connectors?

I have not and have had no issues, wouldn’t be a bad thing to toss in though. 

[Igor_U]

While I agree the new EI connectors are better then the old ones (easier to work with) with little care the original ones can be as reliable. You need to make sure the wire gage is appropriate and both wires are crimped bu the set screw. 
I don’t think you need Locktite it but I used shrink wraps on all CGR30 connectors regardless of what EI recommended 

ymmv

[carusoam]

Let’s see if @oregon87 is around… (EI connectors)

-a-