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Valve Springs Caution For
1997-99 Chrysler 2.0L DOHC VIN Y Engines
The AERA Technical Committee offers the following caution on valve springs for1997-99 Chrysler 2.0L DOHC VIN Y engines. This information applies to engines in Neon vehicles built prior to November 3, 1998.
Symptoms of this condition include engine roughness or misfire, usually only apparent on initial cold engine start. The presence of this condition may be accompanied by a MIL illumination for single or multiple cylinder misfires diagnostic trouble codes (DTC?S). The cause of this cylinder misfire may be resulting from improper valve spring tension on any of the engine?s 16 valves.
Using the Mopar Diagnostic System (MDS2), and/or the Diagnostic Scan Tool (DRBIII®) with appropriate Diagnostic Procedures Manual, verify that all engine and transmission systems are functioning as designed. If non-misfire related DTC?S are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If single or multiple cylinder misfire DTC?S are present, follow all misfire diagnostics listed in the appropriate Diagnostic Procedures Manual and verify TSB 18-47-98 has been completed before performing this repair procedure. If the TSB 18-47-98 has been completed, a sticker confirming this update can be viewed on power control module (PCM).
Parts required: 16 of the 04777555AB Valve springs.
Note: All valve springs must be replaced as a set when installing the revised spring. For reference, the revised spring is 1.902-1.980" (48.3-50.3mm) in length and includes a single green or yellow stripe of dye.
The AERA Technical Committee
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