My 97 lx450 has been having a slight knocking (pinging) issue all summer.
The pinging only happens under medium acceleration AFTER the engine has been running for a few minutes after startup. Sure enough, after a few minutes, P0330 pops up, the timing retards, and the pinging does not go away.
I only run 91 octane.
I’ve been through 4 OEM knock sensors so that’s not the issue.
I’ve deleted the EGR system.
I’ve also retarded the timing to the factory 3 degrees of advance.
Spark plugs look great.
Throttle body is cleaned.
MAF sensor looks brand new.
Looking for guidance on what to troubleshoot next. Any help would be greatly appreciated.
The pinging only happens under medium acceleration AFTER the engine has been running for a few minutes after startup. Sure enough, after a few minutes, P0330 pops up, the timing retards, and the pinging does not go away.
I only run 91 octane.
I’ve been through 4 OEM knock sensors so that’s not the issue.
I’ve deleted the EGR system.
I’ve also retarded the timing to the factory 3 degrees of advance.
Spark plugs look great.
Throttle body is cleaned.
MAF sensor looks brand new.
Looking for guidance on what to troubleshoot next. Any help would be greatly appreciated.