Shops quote $3,500–$5,000 for this one, and the quote usually isn't the ripoff, the job really is that big. Here's what's actually failing, what the correct repair involves, and the honest part: this is not a job I do in a driveway.
The 2005–2008 TL pairs a strong, smooth J32 V6 with a 5-speed automatic that history has judged harshly, this family of Honda automatics is known-weak, and the failure pattern is consistent. The shift solenoids and pressure-control solenoids wear and stick, so gear changes that depend on precise hydraulic timing start to slip and flare. The 2–3 shift is the classic victim: revs jump, then the gear catches late and hard. The 3rd-gear clutch servo wears, and the torque converter's lockup clutch develops the warm-cruise shudder.
What accelerates the decline is heat and fluid neglect. Slipping clutches generate heat; heat burns the ATF; burnt ATF makes everything slip more. By the time the fluid comes out smelling burnt and looking brown, the friction material it's carrying came off the clutch packs. Codes like P0730 (incorrect gear ratio) and P0780 (shift malfunction) are the transmission documenting its own decline.
At this stage, solenoids alone won't save it, the worn clutch packs and servo are mechanical. The repair that actually lasts is a rebuild: transmission out, every clutch pack and seal replaced, the 3rd-gear servo addressed, new or updated solenoids, and a replacement torque converter so the lockup shudder doesn't come back to a freshly rebuilt unit. Half-measures on this gearbox have a short, well-documented life expectancy.
If your Acura is doing any of these, this is the likely cause:
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See how that range compares across Mississauga, Oakville, Milton, Brampton and Etobicoke in the GTA Repair Price Index, honest shop & dealer ranges for the jobs people actually get done.
Automatic Transmission Rebuild with Torque Converter & Solenoids is on my published list of jobs I turn down. It needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. That list is public on my trust page. I'd rather lose the job than learn it on your engine, and you should be suspicious of anyone who says yes to this over the phone.
So here's what I can genuinely do for you, holding a $3,500–$5,000 quote. Both are real, both are flat-priced, and both are worth more than a bad yes.
Before you spend $3,500–$5,000, have someone independent confirm that's actually what's wrong. This is a diagnosis, not the repair, no hoist, no lift, nothing comes apart. I scan it, test it, look at it with you, and tell you straight whether their diagnosis holds up. If it does, I say so and you go pay them with confidence.
Book the second opinion →At $3,500–$5,000 on a car that might be worth not much more, plenty of people replace instead of repair, that's a completely reasonable call. If that's where you're heading, get the next car measured before you hand over money: 150 published points, at the seller's location, written report the same day.
Book a pre-purchase inspection →Tell me what you've been quoted and what the car is doing. $100–$250 flat, at your location, and you get a straight answer either way.
Rather just have the quote read? The free quote check tells you whether the number is in line, no visit needed.
Jobs on this car that ARE mine:
Not so you can do it yourself, so you can tell whether the shop quoting you understands the job:
That's the job. It's why this one belongs on a hoist instead of in a driveway, and it's why $3,500–$5,000 usually isn't a ripoff, it's a big repair honestly priced. What's worth checking is whether that's really what your car needs.
Get the diagnosis confirmed firstPlain version: Automatic Transmission Rebuild with Torque Converter & Solenoids needs equipment a driveway doesn't have, a hoist to get under it properly, a press or a machine shop for the parts that come out, and a controlled space for an engine or gearbox that's in pieces for days. I work out of driveways with hand tools. That's not false modesty, it's the published limit of what I take on, and it's listed on my trust page alongside the warranty.
What that means for you: this page is here to tell you what's failing and what it should cost, so you walk into a shop knowing the job instead of nodding at a number. And if you want that number checked before you pay it, that part I can do, $100–$250 flat, at your location.
A slipping automatic is eating itself, every flared shift burns friction material and overheats the fluid that lubricates everything else inside. The window matters: caught while it's slipping, the case, gears and most hard parts are reusable and a rebuild is straightforward. Driven until it bangs, grinds or gives up gears entirely, hard parts start failing and the rebuild grows or becomes a replacement hunt for a transmission with a known-weak reputation. Burnt fluid is the deadline announcement.
If your only symptom is mildly clunky shifting and the fluid's never been serviced, fresh ATF and solenoids are a legitimate first step, and we'll recommend that if it fits what we find. But slip on the 2–3 shift, delayed engagement and burnt fluid mean the clutch material is already gone. Fluid can't rebuild clutch packs.
The rebuild addresses the known weak points, the 3rd-gear servo, the solenoids, the converter clutch, with updated parts, which is more than the factory original got. The other half is maintenance: this gearbox lives and dies by its fluid, so regular ATF changes after the rebuild are what keep the weak reputation from repeating on your car.
No. Automatic Transmission Rebuild with Torque Converter & Solenoids is on my published list of jobs I turn down, it needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. I'd rather lose the job than learn it on your engine.
Two things, and both are real. A second-opinion diagnostic at your car, $100–$250 flat, at your location, so somebody independent confirms that's actually what's wrong before you commit to a $3,500–$5,000 repair. And if you're weighing replacing the car instead of fixing it, a pre-purchase inspection on the replacement, $149–$399 flat, at the seller's location.
Because the useful part isn't the wrench. It's knowing what's actually failing, what the correct repair involves, and that shops quote $3,500–$5,000 for it, so you walk in knowing the job instead of nodding at a number. If you want that number checked before you pay it, that part I can do.
Send it over for a free second opinion. I'll tell you straight what the job actually involves, and if their quote is fair, I'll tell you that too.
Get a Free Second OpinionOther makes:
I'm not the guy who does this repair. I'm the guy who tells you whether you actually need it, before you spend $3,500–$5,000. Second opinion at your car, $100–$250 flat, in Mississauga, Oakville, Milton, Brampton and Etobicoke.
Book a Second Opinion Inspect a Replacement CarYour options on this one