I have a real problem with gas ping on my 2001 Edge. It has the 4.0 ltr engine, automatic, air,4x4,ported injection. I have tried everything to get it to stop. Prem. gas, octane booster, Prem gas and octane booster combined and still get the ping. No check engine light, so the local dealer says the sensor "should" be ok. Any suggestions ??....................Really frustrated about it.

 

This thread may help you a bit https://www.ranger-forums.com/forum2...hlight=pinging

 

Detonation is very common on 3.0's but much less so on the 4.0L. What are the conditions when you get the ping? Cold or hot engine? What RPM range and throttle position? 4.0's have a history of noisy timing chain tensioners that can be misdiagnosed as detonation.