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-   -   Anyone have a late-model 5.7 with cam probs? (https://www.viperalley.com/forum/showthread.php?t=196778)

GTS Dean December 23rd, 2014 12:31 PM

Anyone have a late-model 5.7 with cam probs?
 
My son's 2010 Ram has a problem on moderate to heavy accel where it "lays down" starts missing and sets a MIL code for #5 cyl misfire.

We put new plugs in, and changed the coil pack but it didn't help. We can hear a tapping at #5 valve cover. Went to RAMforumz and searched for similar. A guy with a 2011 who described the same problem got blown off by the dealer. He pulled a valve cover and posted a short video clearly showing incomplete valve lift on #5.

I'm dropping the truck at my dealer on Friday to see what they figure out. Let's hope that 5/100 powertrain warranty does what it's supposed to do.

Dirtysocks December 23rd, 2014 01:23 PM

I've had one with a bad mds solenoid, and one with a bad ecu on the mds circuit. Sounded like a typewriter almost. Oil changes are key on those.

GTS Dean December 23rd, 2014 02:22 PM

Yeah, we were wondering if the MDS could be the issue, but my Snap-On scanner can't read that. At least no codes set.

MoparBoyy December 23rd, 2014 02:25 PM

I have replaced many 5.7 cams for the lobes on the cam wearing out, wanna replace all the tappets too while you are in there.

GTS Dean December 23rd, 2014 02:43 PM

What's the deal - did they not heat treat a batch of them after grinding?

MoparBoyy December 23rd, 2014 03:23 PM

Quote:

Originally Posted by GTS Dean (Post 3098594)
What's the deal - did they not heat treat a batch of them after grinding?

not sure, but we had a rash of them for a while, doing 2-3 a day.

Hugh Jass December 23rd, 2014 04:44 PM

Head was warped on my friends Ram. Did the same thing you described.

GTS Dean January 8th, 2015 04:05 PM

OK - the answer was the intake lifter for #5 somehow turned sideways and ground down the cam lobe. New parts installed and all covered under standard powertrain warranty - except for the engine oil.


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