Re: engine rpms fluctuates at startup for few seconds
This last time I used the same cleaner I used on the MAF. There's something about MAF cleaners being oxygen safe or free or something. Anyway, I bought specific MAF cleaner and just used that same stuff in the Throttle Body. I had used it on our Denali that has the same 6.0L in it because it was doing the RPM fluctuating. It immediately stopped doing it and the mileage immediately jumped.
It's CRC MAF cleaner.
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