Our Impreza blew the motor at 49,000 miles just before end of warranty so a new motor was installed. Before that it was jerking and hesitation and into the shop 4-5 times. Now it’s off warranty and still doing the same thing. Worried about the new engine as nobody seems to find the issue. This all started after a new coil pack recall was done.
Who installed the new coil pack? dealer under recall or garage?
If it was your local repair shop, they should have reprogrammed the ECU. according to the recall.
NHTSA Campaign Number: 21V264000
Manufacturer Subaru of America, Inc.
Components ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING
Potential Number of Units Affected 466,205
Summary
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Subaru Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is shut off, causing a short circuit.
Remedy
Subaru will notify owners, and dealers will update the ECM software, replace the ignition coils and, if necessary, the front exhaust pipe, free of charge. Owner notification letters were mailed beginning June 1, 2021. Owners can contact Subaru customer service at 1-844-373-6614. Subaru’s number for this recall is WRE-21. Note: This recall includes all vehicles previously repaired under Recall 19V743.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
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NHTSA Campaign Number: 19V743000
Manufacturer Subaru of America, Inc.
Components ELECTRICAL SYSTEM
Potential Number of Units Affected 466,205
Summary
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is shut off, which could result in a short circuit and blown fuse.
Remedy
Subaru will notify owners, and dealers will update the ECM software and inspect and replace the ignition coil, as necessary, free of charge. In addition, on vehicles with confirmed ignition coil damage and a certain stored diagnostic trouble code (DTC), Subaru will replace the front exhaust pipe, free of charge. The recall began December 4, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru’s number for this recall is WUQ-02.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
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I’m presuming the replacement engine still uses the same coil pack. Has your shop ever tried replacing that coil pack with another? Could have been a faulty replacement coil pack is all. Replacement coil pack have to be mounted exactly the same as the replaced one, another thing to ask your shop to check. Generally if a faulty coil pack results in that symptom, usually the check engine light would turn on and there’d be misfire diagnostic codes. Anything like that in your case OP?