rough start and running
#21
10-20-2011, 12:00 PM
Diesel Bomber
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!
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!
I rescanned it a couple of days ago and its reading the FICM and Cylinder 2 and 3 injectors. But if ists still running rough when we get it back Ill do exactly as you said appreciate the input. I aint no pro at all this stuff yet I just know the basics goin one job at a time. Take care.
#22
10-20-2011, 12:40 PM
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...
#23
10-20-2011, 03:12 PM
Diesel Bomber
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...
#24
10-21-2011, 07:59 AM
#25
10-21-2011, 08:28 AM
Diesel Bomber
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