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09 TL 1st gear issues from a stop; rpms bounce, wants to and does stall

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09 TL 1st gear issues from a stop; rpms bounce, wants to and does stall

 
Old 05-20-2019, 11:36 PM
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09 TL 1st gear issues from a stop; rpms bounce, wants to and does stall

Hoping someone can shed some insight.

My 09 TL started acting up. From a start, the RPMs will bounce, car jerks and wants to stall. And does if you don't feather the throttle at the right time. However, you can put it in reverse and stop/go a million times without a hiccup. Once you get some speed, car drives normal.

My tranny guy says its not the TC locking up; that would happen in forward or reverse. Says its not a tranny issue.

Not throwing codes, no CEL.

He is leaning towards a mass air flow sensor issue as he says he is getting some weird data.

Anyone have experience with a similar issue?
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Old 05-20-2019, 11:46 PM
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To clarify, after tranny guy said not a transmission issue, I took it to a mechanic as I was leaning towards a fuel issue; being filter is in the tank etc I'm in over my head.

Mechanic is stumped. Said he's tried a couple different things; research led us to believe the throttle body was a possible culprit but that didn't fix it (he, like I, does not like throwing parts at a problem. But with a bunch of possible issues checked off, I gave the green light. DOH!)

He is now thinking mass air flow sensor but we just dont know.

Wish the car would throw a code!
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Old 05-21-2019, 06:04 PM
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how old is the trans fluid? Worn trans fluid can cause a lot of issues!

Is it a SH-AWD? They have a tendency to kill fuel pumps for some odd reason.
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