UPDATE: Rattle Sound near Front of Engine

The 2019 XT4 may have a rattle sound heard near the front of the 2.0L 4-cylinder engine (RPO LSY) due to a stuck or collapsed timing chain tensioner and, as a result, a loose timing chain. DTCs P0011 (Intake Camshaft Position System Performance), P0014 (Exhaust Camshaft Position System Performance), P0016 (Intake Camshaft Position Not Plausible), and/or P0017 (Exhaust Camshaft Position Not Plausible) may be set.

A stuck or collapsed timing chain tensioner may cause damage to the oil control valve assemblies in either camshaft sprocket bolt. If a rattle sound is heard near the front of the engine, remove the camshaft position actuator valve solenoids and check for a missing, out of position, or damaged camshaft position actuator valve snap ring. (Fig. 18)

 

Fig. 18

 

Snap Ring

If the snap ring for either camshaft sprocket bolt is missing, out of position or damaged, replace both camshaft sprocket bolts and perform the timing chain tensioner/guide inspections listed below.

If both snap rings are in the correct position, perform the following timing chain tensioner and guide inspections.

 

Timing Chain Tensioner

If the rattle sound is heard near the front of the engine, remove the lower engine front cover assembly and inspect the timing chain tensioner. A stuck timing chain tensioner plunger will allow an air gap to be present between the tensioner plunger and the timing chain guide. (Fig. 19)

 

Fig. 19

 

When viewing the timing chain tensioner removed from the engine, the plunger can be seen stuck in the body of the tensioner. (Fig. 20)

 

Fig. 20

 

If these conditions are found, replace the timing chain tensioner following the appropriate Service Information. Also inspect the three timing chain guides for any excessive wear or damage. Replace any damaged timing chain guides if necessary.

For additional information, refer to #PIP5652A.

 

– Thanks to Raymond Haglund

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