How do you know when your flywheel is giving out?

Every once in awhile, usually under acceleration it seems as if my truck misses, it's not the engine because rpm's don't drop at all. But kind of a skip, and while on the highway as I go to pass someone(passing gear) it seems to do it a lot. It's kind of hard to explain, but here usually my truck has been starting rough as well (Not turning over completely with one key turn).

Could this be my flywheel?

 

No.

Sounds like an engine problem. Could be a COP on it's way out or possibly something wrong with the EGR system.

How many miles on the truck?

 

Close to 100, what do you think I should do to check her out? She's not throwing any codes.

 

Even though it's not throwing any codes, doesn't mean there isn't something slightly wrong.

I'd say get your COPs checked out and possibly change your plugs again. It only takes 1 to get fouled to cause issues. I'm beginning to doubt the EGR system is failing... but I'd first do that.

 

The last thing you need to do is start throwing parts at it.

If you can repeat the problem regularly take it to the dealer and have them do a diagnostic scan to find out what is going on. Or pick up Autotap or some other scan software and do it yourself.
I am not sure what you mean by the flywheel giving out, but I would be very surprised if the flywheel has anything to do with your problems.

You may want to read up on some of the injector issues with the '05 and see if your symptoms match any of those that have been experienced with others.

 

The only reason I refer to the flywheel is because a buddy of mine who's a mechanic told me so, other than that I am aware of the injector problems with the 05 but they have been replaced and flushed regularly.

 

Plugs were just changed less than 5000 miles ago.

 

Did the problem exist before the plugs were changed? Did you (or anyone) do any work to the truck around the time that the problem began?

 

Do you have a programmer?
Disconnect your battery; clear the KAM.
It may have learned some bad fuel trims.
Open loop is not instant for the stock tune.

There is no EGR, VCT is the 'EGR'.

 

No the problem started here about two weeks ago, it was running perfect until this started.

 

Yes, I have the edge.

Actually I disconnected the battery about four days ago, to clean the terminals due to acid build up.

"Open loop" Can you explain what that is?

 

modern engines rely on a multitude of sensors to deliver the proper amount of fuel to an engine, one of which is the 02 sensor. since o2's have to be hot to function properly, the engine relies on a different set of values and disregards information from the o2's to determine A/F until the o2's have heated to operating temperature. then, the infomation from the o2's is sent to the EEC and the vehicle enters closed loop mode.

edit: why haven't you considered the transmission as a possible culprit instead of the flywheel? the 38's have probably put some strain on the tranny over time. i had a lifted jeep that did exactly what you described and it was the auto tranny.

 

See I thought it could be that as well, but I just replaced my tranny less than a year ago, so don't think it could be that.

Going back to the 02's, do you think it could be those? I haven't changed them out. Every how often do they need replacing?

 

Multitude of sensors?

MAS/MAF and O2s, that is a couple.

I was shooting after the fact if you did not have a tune, the PCM would ramp to open loop, and may take closed loop learned values into correction before the step/change was really made. Which may give you the feeling you described. But because you do have a tune and more than likely those ramps are removed we can skip this.

How many miles are on the truck?

Check list...
Oil change?
Fuel filter?
Air filter?
Throttle body cleaned?
MAS/MAF cleaned if a gauze/foam filter used?

If you feel it really is the transmissions you can log input and output shaft speed on the EDGE, making sure they are within range of each other at WOT. When you see the ~1000 difference normally driving it is the TC unlocked.

 

Ok, miles A LOT

Oil change, not due for another 3000

Fuel Filter, Changed at every oil change

Air Filter, AirAid Cold Air Intake (Cleaned Regularly)

Throttle Body, I personally cleaned it about a month and half ago.

MAFS, Was also cleaned during the TB cleanup.

Now, as for the input and output shaft speed, what kind of range am I looking at, as far as Regular Driving and WOT?