Originally Posted by Mdub707

If he gets injectors replaced and it comes back about the same condition it went in, don't be surprised. It might fix it, it might not. Injector replacement is the most expensive and most tedious step out of troubleshooting this, so that would be where I would end, not start, but it's up to you guys.

Replacing one battery is never a good idea, typically the other one is not far behind and it will drain the new good one down real fast too. Just for future reference. The multimeter itself won't really tell you anything, the load tester is what lets you know what's going on. It is also possible the alternator could be having issues, I have seen this a few times.

Let us know how you make out, just makes it easier for guys down the road to troubleshoot. Thanks!

Originally Posted by Mdub707

Bad injectors are quite often mis-diagnosed though for these exact reasons. A bad FICM will cause it to throw injector codes when there may not be anything wrong with the injectors at all. FICM's can be sneaky little buggers. Typically if you get injector codes AND a FICM code, the FICM is the first place to look/test, since it's the easiest and cheapest. Once it's verified that it is good, then look at the injectors. It's possible there are a few other things going on with the injectors too, bad o-rings, loose injector hold downs and such...

Originally Posted by RanchhandTCR

Im positive we have a least a bad injector.

Originally Posted by Mdub707

It wouldn't surprise me honestly. I just like pointing this stuff out for future readers as well though. Please be sure to let us know how you make out when you get it fully fixed up.