Quote:
Originally Posted by nis350
it was engine pings as it was relatively loud and only occurred during acceleration from dead stop or rolling. There is no warning light or even pending code. My mechanic reviewed the fuel trims and said that it ran lean occasionally which could be the cause of the engine pings.
Engine is smooth and relatively quiet (compared to the Z) and the engine ping doesn't occur under other driving conditions.
Also ran through a few tankful of fuel additives (techron & lucas) and didn't help.
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I personally know what your talking about as I've had this same issue with mine for some time.
At one time I reconnected the O2 sensor from the HFC's, and noticed on my daily morning commute where I would notice it the pinging stopped.
This went on for about 2 weeks but nonetheless it returned.
Im also thinking it has something to do with the O2 sensor intermittently working to cause the off idle lean condition.
I to got not cel and will when I get around to it replace the O2's to see it that will make it go away.
The runs fine but like you know it's just annoying to be pulling from a stop to be pinging like your driving off in the wrong gear.