2004 Ford Thunderbird problems & reliability
34 owner complaints filed with NHTSA for the 2004 Ford Thunderbird, alongside 1 safety recall campaign. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
5 complaints report injuries (6 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Vehicle Speed Control | 9 | 26% |
| Engine | 7 | 21% |
| Power Train | 7 | 21% |
| Engine and Engine Cooling | 5 | 15% |
| Electrical System | 4 | 12% |
| Air Bags | 3 | 9% |
| Service Brakes, Hydraulic | 2 | 6% |
| Fuel System, Gasoline | 1 | 3% |
| Suspension | 1 | 3% |
| Wheels | 1 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 30,000 miles (middle 50% between 15,000 and 40,526 miles), based on 29 complaints that included mileage.
Complaints by incident year
What owners report
“The contact owns a 2004 Ford Thunderbird. The contact stated while driving at an undisclosed speed, the contact approached a stop sign and the vehicle stopped as needed; however, after the contact depressed on the accelerator pedal, the vehicle began to misfire and shuddered for several minutes. The contact took the…”
Engine · filed Sep 27, 2021
“Have replaced via ford dealer throttle control sensor twice. First repair 2007. Second repair 2014, and now in 2020. I am facing same problem again. Obviously the control system is defective. The problem triggers vehicle limp mode while driving and in park.”
Vehicle Speed Control · filed Oct 14, 2020
“Tl* the contact owns a 2004 ford thunderbird. The contact stated that while inside the vehicle, an abnormal odor appeared as the check engine warning light illuminated. The vehicle was taken to an independent mechanic who changed the oil and noticed fuel leaking from the fuel tank. The contact mentioned that the…”
Fuel System, Gasoline · filed Aug 26, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
32 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2004 Ford Thunderbird. The 10 most recent:
The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a…
SSM 46085 · Service Bulletin/Repair Instructions · issued Sep 21, 2016
Ford/lincoln/mercury: may have sludge buildup in throttle body leading to less airflow or engine idling rpm fluctuation and hard starts or battery disconnect or dead battery after keep alive memory (kam) clear. Models…
TSB-12-8-1 · Service Bulletin/Repair Instructions · issued Aug 1, 2012
Ford/lincoln mercury: certain 2003-2005 model year lincoln ls and ford thunderbird vehicles equipped with 3.9l engine with extended warranty coverage on ignition coil assemblies and on 2003 my vehicles only , engine…
CSP 07M07 · Service Bulletin/Repair Instructions · issued May 20, 2008
Automatic transmission solenoid emissions warranty extension. Sample consumer letter attached. *kb
0708 · Service Bulletin/Repair Instructions · issued Apr 19, 2007
Excessive electrical system current draw which could result in a discharged battery and a no crank condition. *tt service tips. *tt
0295 · Service Bulletin/Repair Instructions · issued Nov 14, 2005
Water/moisture in cop wells - dtc p0301-p0308 - 3.9l engine - vehicles built through 5/1/2004. *tt
02162 · Service Bulletin/Repair Instructions · issued Jun 7, 2005
Malfunction indicator lamp (mil) and electronic throttle control (etc) lamps on with both diagnostic trouble code (dtc) p2106 and p2135. *tt
04219 · Service Bulletin/Repair Instructions · issued Jun 7, 2005
Improperly formulated transmission fluid that, over time, may cause delayed/harsh reverse engagements. Customer satisfaction program 04b22. 5r55s/e & 5r44e transmission fluid additive. *tt supplement #1. *tt supplement…
04B22 · Service Bulletin/Repair Instructions · issued May 27, 2005
Unusual engine noise or engine knock concerns due to regular fuel. *tt
18615 · Service Bulletin/Repair Instructions · issued May 1, 2005
Delayed or harsh reverse engagements - 5r55s transmission - vehicles built prior to 09/23/2004. *tt
05612 · Service Bulletin/Repair Instructions · issued Apr 1, 2005
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2004 Ford Thunderbird has 1 NHTSA recall campaign — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2004 Ford Thunderbird?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 30,000 miles — budget accordingly if the car is approaching that mileage.