I noticed my cam sensor wiring is insanely stiff. So I bought a new pigtail to replace the old plug and wires. My question is this: Soldering or crimping. What is better? My concern is the heat of the EGR tube. I've read pros and cons of both methods, but it seems that crimping has the least amount of drawbacks (as long as it's done right).

I have never used a crimp connection on my car. Soldering is the only method in my opinion.

If you are that worried about it, do both. Solder, then crimp.

On my Harley's {KNOWN 2-wheeled vibrators...........lol} I do both when the application permits.
First I solder, then crimp, then re-heat solder to ensure optimum continuity. Then as a final touch, I usually cover connection w/heat-shrink tubing.
The heat-shrink not only insulates, but adds a clean "pro" look.
** Note: make sure you slide heat-shrink on wire BEFORE soldering. ;-) **



The good we do, never remembered.
The bad, never forgotten.
_________
97 Eagle Talon ESi w/CAI/HiPerf coil & wires/on-board G-force meter

Originally posted by ShovelheadKevin
** Note: make sure you slide heat-shrink on wire BEFORE soldering. ;-) **

lol

That's sound advice. I can't tell you how many times I forgot to put heat shrink on before I had already soldered the connection.

OP - Just make sure you aren't caking your connections in solder. You only want to make a good connections, not drown the connections. If you haven't done much soldering in the past just practice on some lengths of wire before you start the actual job. It isn't hard.

Solder is always preferable. www.mmxpress.com/technical/connections.htm

When it comes to a sensor as critical to vehicle operation - and subject to so much heat and vibratory stress, I would ONLY consider soldering this thing on.

YMMV.

Originally posted by DR1665
Solder is always preferable. www.mmxpress.com/technical/connections.htm When it comes to a sensor as critical to vehicle operation - and subject to so much heat and vibratory stress, I would ONLY consider soldering this thing on. YMMV.

Driggs, that's a pretty cool article. :thumbsup

OP as you may know by now, it comes down to personal opinion. I prefer soldering rather than crimping.

Oscar

you def want to solder any connection that will be exposed to the elements. dirt, oil, grease and water will get into a crimp connector and will corrode over time and lead to future problems. soldering take more time to do but will save you time and headache in the long run