So for my 2017 Grand Cherokee I've had for a few weeks I've noticed some engine noise and realized it's pinging noise. It's noticeable on incline's under normal acceleration. It's definitely a pinging sound because I've had this happen before on my older Jeep. I'm using 87 octane which is what is recommended on the 3.6 V6 engine. I've tried Shell, Exxon and Lukoil all 87 reg. How can a brand new engine already ping? This did not happen on my 2014 V6 although the new engine has been refined so it's a bit different. Has anyone experience pinging on the 2017 V6? Can anyone please test this out when you have a chance?
Just picked up my Jeep from the dealership for my occasional pinging. Tech told me that there is a PCM flash update available for my Jeep which is part of TSB# 18-049-16 REV. B. Here's a copy of the TSB http://www.wk2jeeps.com/tsb/tsb_wk2_1804916b.pdf. Although the main reason for the TSB is to address some error codes by flashing the PCM with the latest software, the flash also includes improving knock sensor performance (see "Other enhancements included in this update:" on page 2). Hopefully this will address my pinging. I'll need to experiment for a few days on 87 octane to see if this TSB worked. I'll post back in a few days.
Just picked up my Jeep from the dealership for my occasional pinging. Tech told me that there is a PCM flash update available for my Jeep which is part of TSB# 18-049-16 REV. B. Here's a copy of the TSB http://www.wk2jeeps.com/tsb/tsb_wk2_1804916b.pdf. Although the main reason for the TSB is to address some error codes by flashing the PCM with the latest software, the flash also includes improving knock sensor performance (see "Other enhancements included in this update:" on page 2). Hopefully this will address my pinging. I'll need to experiment for a few days on 87 octane to see if this TSB worked. I'll post back in a few days.
I could of sworn I occasionally hear a hissing noise/like air from the engine upon stepping on the gas at low speed. For example, I was driving home on the highway yesterday in stop and go traffic, driving 20mph I stepped on the gas to speed up I heard this 'psssttt' air sound (air filter?) initially then went away. Anyone else with a 2017 3.6 hear this? Need to have the driver window down.
There is a reason that Jeep designed the radio to come on every time you restart the car. If you don't turn yours up soon you will drive yourself crazy listening for every occasional noise.
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