The motor does have a bit of an erratic idle, you can watch the radio antenna sway side to side at
Idle. And it even gets the truck rocking (almost like you had put a cam in the truck) it doesn't do it all the time. But pretty much a sure thing when it's a cold start, tomorrow if I get a moment. I'll fire the truck up and let it get fully warm again. And I'll video all around the motor. I'm just wondering if I have one of those wrist pin motors, far as oil/maintenance 3400 miles on the oil, same oil I've been using since 4K (Mobil 1 0w-40 euro blend) and a Napa/wix 7899 filter (the bigger filter used on the earlier 5.7's) oil is full. Getting a bit dark like usual. But otherwise fine. And the truck drives fine. No noise once the oil pressure getting up into the 40-45 psi range.
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In short, your truck falls right on the cusp of the affected wrist pin debacle. Oct 7th is the cut off. Below is the entire TSB:
NUMBER: 09-002-15 REV. A
GROUP: Engine
DATE: April 29, 2015
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 09-002-15, DATED APRIL 18,
2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE
HIGHLIGHTED WITH **ASTERISKS** WHICH INCLUDES ADDING THE 2015 MODEL
YEAR VEHICLE.
THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE
TRANSMITTAL (RRT) 15-038. ALL APPLICABLE SOLD AND UN-SOLD RRT VIN's
HAVE BEEN LOADED. TO VERIFY THAT THIS RRT SERVICE ACTION IS
APPLICABLE TO THE VEHICLE, USE VIP OR PERFORM A VIN SEARCH IN
TECHCONNECT. ALL REPAIRS ARE REIMBURSABLE WITHIN THE PROVISIONS OF
WARRANTY.
SUBJECT:
Knocking Noise From Engine After Sitting Overnight
OVERVIEW:
This bulletin involves evaluating the engine for cold start knocking noise typically after an overnight cold soak. Some engines during this build period may have been built with incorrect piston wrist pins. The wrist pins will cause an audible knocking noise upon start up. The knocking noise will typically reduce after approximately 30 minutes of idle time.
Engine replacement will be required.
MODELS:
2014 - **2015** (DJ) Dodge Ram 2500
2014 - **2015** (D2) Dodge Ram 3500 Pickup
2014 - **2015** (DD) Dodge Ram 3500 Cab Chassis
2014 - **2015** (DP) Dodge Ram 4500/5500
NOTE :This bulletin applies to vehicles built on or after June 16, 2014 (0616XX) and on or before October 07, 2014 (1007XX) equipped with a 6.4L engine (sales code ESA or ESB).
SYMPTOM/CONDITION:
Some customers may comment they hear an audible knocking noise coming form the engine after start up for approximately 30 minutes. This only occurs after cold start when the vehicle has been sitting over night.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If DTCs or symptom conditions, other than the ones listed above are present, record the issues on the repair order and repair as necessary before proceeding further with this bulletin.
Only perform the repair if the customers VIN is listed in VIP or your RRT VIN list.
PARTS REQUIRED:
REPAIR PROCEDURE:
1. Allow vehicle to sit overnight outside the repair facility.
NOTE
ark the vehicle in an open area if possible to avoid noise amplification from surrounding buildings.
2. Prior to starting the vehicle install wiTECH and navigate to the Powertrain Control Module (PCM) data screen.
3. Locate the engine coolant data and verify the engine coolant is no more than 10 degrees higher than the current ambient air temperature at the time of evaluation and record temperature on the repair order.
4. Is the displayed engine coolant temperature displayed in the PCM less than 10 degrees higher than the current ambient air temperature at the time of evaluation?
a. Yes >>> Proceed to Step # 5.
b. No >>> Allow the vehicle to continue to soak outside until Step 4 is achieved.
NOTE :The following steps are part of the evaluation and must be followed in the order listed below.
5. Record the current engine coolant temperature as displayed by wiTECH in the PCM data on the vehicles repair order.
6. Start the engine and record the start up time on the vehicles repair order.
7. Evaluate the engine for abnormal engine knocking noise.
NOTE :Noise evaluation should be performed from both the right front wheel well and the left front wheel well with the vehicle at ground level.
8. Is an audible knock heard coming from the engine.
a. Yes >>> Note the noise location (left wheel well or right wheel well) on the repair order and proceed to Step # 9.
b. No >>> This repair procedure does not apply to this vehicle refer to TechCONNECT for additional diagnostics.
9. Allow the vehicle to run while monitoring the noise level of the knock.
NOTE :Engine must remain at an idle DO NOT increase engine RPM during this evaluation.
10. Is the knock coming from the engine still present after allowing the engine to run for 30 minutes?
a. Yes >>> This repair procedure does not apply to this vehicle refer to TechCONNECT for additional diagnostics.
b. No >>> Proceed to Step # 11.
11. Record the time at which the engine knock was no longer present on the vehicles repair order.
12. Record the engine coolant temperature displayed by wiTECH at the time the knock was no longer present on the repair order.
NOTE :Ensure all data is recorded on the vehicles repair order so that it is available when contacting the Powertrain Service Center for replacement engine. Whenever possible retain a recording of the engine knock during evaluation for future review.
13. Contact Powertrain Service Center for replacement engine assembly and follow the replacement procedure located in TechCONNECT under 09 - Engine, 6.4L Removal/Installation.
POLICY:
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer :This bulletin is supplied as technical information only and is not an authorization for repair.