Jason Klinger
Member
Hey Guys,
Sorry for the confusing post title, but I am not afraid to admit that this is above my automotive knowledge, so I figured I'd cover my bases, hah.
Just wondering if any of you have experienced this or a similar situation...
I'm running an 07 Ltd 4x4 with the 4.6L V8, 6-spd auto, K&N 77 series intake, Zabteck throttle body, and a custom 3" catback exhaust. Around the 2200-2500 RPM range I hear a VERY loud drone coming from the engine compartment. The other part of it is that the tranny is not shifting at the right time. I understand in talking to one of my mechanic buddies that the MAF/TB electronics talk
to the transmission to tell it "when" to shift. Is this right? I'm not seeing any idiot lights or other issues which point towards one specific cause. I had the "Tranny bump" TB done last year and *knock on wood* have had ZERO occurrences since.
I talked with Todd Z. about this and he had me pull the neg cable to wipe the adaptive learning. No luck there. What are the chances something with the MAF sensor needing cleaned or something with the TB mechanics?
Everything else is very much in order with the exception of when the engine is in that 2200-2500 RPM range. And with the gearing and, the roads i travel, and my driving style, the engine spends A LOT of time there.
HELP! :blink:
Sorry for the confusing post title, but I am not afraid to admit that this is above my automotive knowledge, so I figured I'd cover my bases, hah.
Just wondering if any of you have experienced this or a similar situation...
I'm running an 07 Ltd 4x4 with the 4.6L V8, 6-spd auto, K&N 77 series intake, Zabteck throttle body, and a custom 3" catback exhaust. Around the 2200-2500 RPM range I hear a VERY loud drone coming from the engine compartment. The other part of it is that the tranny is not shifting at the right time. I understand in talking to one of my mechanic buddies that the MAF/TB electronics talk
to the transmission to tell it "when" to shift. Is this right? I'm not seeing any idiot lights or other issues which point towards one specific cause. I had the "Tranny bump" TB done last year and *knock on wood* have had ZERO occurrences since.
I talked with Todd Z. about this and he had me pull the neg cable to wipe the adaptive learning. No luck there. What are the chances something with the MAF sensor needing cleaned or something with the TB mechanics?
Everything else is very much in order with the exception of when the engine is in that 2200-2500 RPM range. And with the gearing and, the roads i travel, and my driving style, the engine spends A LOT of time there.
HELP! :blink:
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