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Ford Falcon: 5-Speed Automatic Torque Converter Lock-Up Shudder (BA/BF)

5-Speed Automatic Torque Converter Lock-Up Shudder (BA/BF) is a common transmission fault on the Ford Falcon on the 1998–2008 cars, and we rate it major. Putting it right costs $1,500 to $3,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 36 documented faults on the Ford Falcon.

Vehicle
Ford Falcon
Years
1998–2008
Fuel
petrol
Gearbox
auto
System
Transmission

This page covers the Ford Falcon as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Ford Falcon faults36 documented faults on this model

What you are looking at

A cutaway automatic transmission torque converter showing the internal turbine and stator.Example of the part — not this vehicle

A torque converter, sectioned. The lock-up clutch inside is what shudders.

No machine-readable author provided. BerndB~commonswiki assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons

What goes wrong

The BA and BF Falcon fitted with the 5-speed automatic transmission exhibits torque converter shudder — a vibration felt through the drivetrain at light throttle when the converter clutch applies in top gear. The fault is caused by glazed converter clutch friction material and is often temporarily suppressed by a fluid change using friction modifier additive. Persistent cases require torque converter replacement.

What you would notice

  • Shudder or vibration through the seat and steering wheel at 60-100km/h under light throttle
  • Vibration resembles rough road surface but occurs on smooth bitumen
  • Feels like brief drivetrain buzz during converter lock-up engagement
  • Disappears under hard acceleration or when converter unlocks
  • May temporarily improve following a transmission fluid change with friction modifier

How to check it

Where to look. Automatic transmission torque converter, lock-up clutch friction material inside converter body

On the test drive, cruise at 80-100km/h on a smooth road with light constant throttle. Any shudder through seat or steering wheel in this condition indicates converter lock-up shudder. Check transmission fluid for burnt smell or dark brown colour indicating heat damage.

Parts involved: Torque converter.

What it costs to put right

$1,500 to $3,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Any shudder or vibration when cruising at highway speeds?”
  • “Has the transmission fluid been changed with friction modifier additive?”
  • “Has the torque converter been replaced?”

Now check the Ford Falcon you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Ford Falcon buyer questions

Is 5-speed automatic torque converter lock-up shudder (ba/bf) serious on a Ford Falcon?

We rate it major and common on the Ford Falcon. The BA and BF Falcon fitted with the 5-speed automatic transmission exhibits torque converter shudder — a vibration felt through the drivetrain at light throttle when the converter clutch applies in top gear. The fault is caused by glazed converter clutch friction material and is often temporarily suppressed by a fluid change using friction modifier additive. Persistent cases require torque converter replacement.

How much does it cost to fix on a Ford Falcon?

$1,500 to $3,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Ford Falcon years are affected?

Our research records this fault on the 1998–2008 Ford Falcon. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

On the test drive, cruise at 80-100km/h on a smooth road with light constant throttle. Any shudder through seat or steering wheel in this condition indicates converter lock-up shudder. Check transmission fluid for burnt smell or dark brown colour indicating heat damage. Look here: Automatic transmission torque converter, lock-up clutch friction material inside converter body