mikey1273 wrote:
I noticed that The OP said he replaced the Glow plug module, The relay I assume. The relay from the factory system shouldn't need changed when changing to 7v metallic glow plugs, It is however required for the 5v Bosch plugs that Mopar prefers to sell. I am wondering if he put in the 5 volt relay in with 7 volt plugs and that's why he is seeing what he is seeing.
The
http://www.idparts.com/liberty-crd-glow-plug-module-56044671ac-p-2749.html relay works with either 5v or 7v according to IDParts.. My son always replaces the relay when he replaces the glow plugs -- it's always seemed like a good practice from a preventative point of view. Original relay had same issue anyways. My son is going to hook his O-Scope up tonight and check it as GD said .. just to see.
Anyway, the plugs we pulled were marked BOSCH 7v so the Etechno 7V's should be correct. As green diesel says, if the Etechno plugs really just don't work, I need to look at other solutions. I am in Michigan so starting in the cold is a foregone conclusion. I am already having a tough time keeping this after this winter, it's my every day driver and being a Service Eng, I need vehicle that site all night out in sub-zero and still start in the morning when I am on a job. Previously it did that, now it appears I will be asking a lot of it. If I could find a couple of the ceramic's in good shape used, I would just put them back in.
If a GD tune enhances a 5V glow plug setup to work anywhere near as well as old ceramics, I would consider that. Hell they are only about 2hrs away from me. But with 185k on this (though I've got no other real issues), don't know if that is a reasonable alternative.