
2001 Subaru Forester 2.5L Spark Knock
Spark knock when engine loaded at highway speed (customer says since new - his first visit with us). Starts and runs fine. Scan data normal (map,temp,airflow). Plugs are recent - one was loose. Ign. timing correct at idle. A new knock sensor seemed to correct ...
Summary posted 5/26/2009
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)6 Replies Received(Hide Replies)6 Replies Received
|
Message Closed w/Summary
|
VIN | JF1SF65561 |
Engine | 2.5 L / 4 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Spark Knock |
Occurs | Under Load, Cruise |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/Summary
Vehicle Data
2001 Subaru Forester
VIN | JF1SF65561 |
Engine | 2.5 L / 4 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Spark Knock |
Occurs | Under Load, Cruise |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |