2005 Ford Taurus engine problems
severe 50 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Of the 14 model years of Ford Taurus we track for engine problems, this one carries the most owner complaints on file — 50.
Owners have filed 50 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
The failure pattern owners describe
Buyer takeaway: The 2005 Taurus has a well-documented unintended acceleration problem tied to throttle cable failure and sticking throttle bodies, compounded by chronic stalling and transmission issues that appear around 60,000–85,000 miles. Multiple owners report the problem is known within dealer networks but lacks a recall, making it a real safety risk if you're considering one used.
Owners consistently describe sudden, uncontrolled engine acceleration to 3,000–7,000 RPM without touching the accelerator. The throttle cable disconnects from its linkage, sticks open, or fails to seat properly—often around 60,000–80,000 miles when the connector wears out. Once it happens, the engine races, the car lurches forward, and even full brake pressure struggles to hold it back. Some owners had to turn off the engine while moving to regain control. A few mechanics found varnish buildup inside the throttle body causing the butterfly to stick; carb cleaner helped temporarily.
Stalling is another major complaint, occurring at any speed and in any gear. The engine dies on the highway, at stop lights, and during low-speed turns—sometimes with power steering and brakes lost. Dealers replaced intake valves, spark plugs, and belts but couldn't replicate or fix it.
Transmission failure appears in the 50,000–65,000-mile range, with complete replacement costing $3,000–$3,500. One owner also reported a failed idle control solenoid causing runaway RPM.
Secondary issues include leaking timing gaskets around 60,000 miles ($700 repair), AC compressor failure around 80,000 miles, cracked plastic intake manifolds, catalytic converter breakage, and one engine fire while parked. Cold-start stalling in freezing temperatures and MAF sensor failures also appear. Owners report dealers acknowledge these are "known problems," yet neither recalls nor TSBs have been issued for most failures.
Same Ford Taurus engine reports on nearby years: 2006 · 2007 · 2008
Failure modes owners describe
Unintended acceleration from throttle cable disconnect/failure
Throttle cable disconnects, sticks open, or comes completely off the linkage, causing the engine to rev uncontrollably to 3,000–7,000 RPM without driver input. Vehicle becomes difficult or impossible to stop even with heavy braking. Engine surges occur in drive, park, neutral, and idle.
When: Typically 30,000–110,000 miles; some complaints note occurrence early in ownership
Symptoms owners cite: Engine revs to 3,000–7,000 RPM without throttle input; Vehicle lurches or accelerates without foot on accelerator; Extreme difficulty stopping, requiring full brake pedal pressure or turning off engine; Cruising control cable disconnected or loose at throttle linkage; Problem intermittent; turning engine off and restarting temporarily resolves it; Burning smell from brake friction
Repairs/costs cited: Owners report cable reattached by dealers or mechanics; some disconnected cruise cable entirely ($190 reported). Temporary fix via hard throttle pedal pump. Plastic tie-wraps used by owners to tighten loose connector. Varnish buildup on throttle butterfly cleaned with carb cleaner.
Stalling during operation
Engine shuts off without warning while driving at any speed (highway, city, low-speed turns) or after starting. Vehicle may require multiple restart attempts. Check engine light and other warning lights illuminate before stall.
When: 14,000–110,000 miles; some complaints span years of ownership
Symptoms owners cite: Engine stalls at stop lights, during turns (15–30 MPH), and on highways (55–70 MPH); Vehicle shuts off completely, requiring shift to neutral and restart; Check engine light illuminates before or during stall; Stalling occurs intermittently and cannot be replicated by dealers; Loss of power steering and brakes during stall creates dangerous situation; May require 4–5 start attempts after stall
Repairs/costs cited: Dealers replaced intake valve, spark plugs, belts; dealers unable to recreate problem or diagnose root cause. Independent mechanics unable to replicate. One fuel filter change did not resolve. Owners report dealer response: 'ghost' causing failure, no diagnosis possible.
Cruise control cable disconnection/malfunction
Cruise control cable loosens, disconnects, or fails to seat properly in connector at throttle linkage. Connector is undersized or has poor fit, causing intermittent disengagement. Cable often holds throttle open rather than returning it to idle.
When: Approximately 60,000–80,000 miles; described as wear pattern occurring at consistent mileage across fleet
Symptoms owners cite: Cruise control will not engage or set; Cable slides in and out of connector repeatedly; Throttle held open by unattached cable; Repeated disconnection with throttle actuation; Connector fitting very loose and snaps off easily
Repairs/costs cited: Dealers disconnected or removed cruise cable entirely. Owners used plastic tie-wraps to tighten connector. Cost approximately $190 for cable work. Mechanic noted connector is undersized or poorly designed for duty.
Throttle body sticking (varnish buildup and linkage stiction)
Throttle butterfly sticks in closed or open position due to varnish and carbon deposits inside throttle body. Sticky linkage at cable attachment causes intermittent stalling and hard throttle opening/closing.
When: 60,000–80,000 miles typical; progressive wear
Symptoms owners cite: Throttle difficult to open when pressing pedal (sticking closed); Throttle stuck open, not returning to idle; Requires harder-than-normal pedal push to increase RPM; Varnish visible inside throttle body around butterfly; Linkage sticks at throttle body and cable connection point
Repairs/costs cited: Carb cleaner applied to throttle body and butterfly while engine running. Throttle body cleaned by dealership (one case). Problem resolved temporarily after cleaning in owner case.
Timing gear/head gasket leaks
Timing gear gasket leaks coolant. Gasket design is acknowledged by technicians as a known failure point at specific mileage. Later head gasket failure possible if coolant loss continues.
When: Approximately 60,000 miles (common threshold noted by dealer technician)
Symptoms owners cite: Coolant leaking at timing gear gasket; Check engine light triggered by coolant loss
Repairs/costs cited: Dealer repair cost $700. Dealer noted problem is common and plans to install aftermarket gasket of better quality. Owner reported check engine light issue resolved with tune-up ($416.91) and potential ECU reflash ($200) per technical service bulletin.
Recalls/TSBs owners mention: Technical Service Bulletin exists for check engine light issue related to this engine family
Cracked intake manifold
Plastic intake manifold cracks without obvious cause. Owner believes design is inherently weak due to material choice (plastic vs. metal).
When: 60,000 miles
Symptoms owners cite: Cracked plastic intake manifold discovered during service
Repairs/costs cited: Dealer repaired manifold; cost covered under warranty initially. Replacement manifold is same plastic design, raising concern about durability. Repair was completed post-warranty at owner expense.
A/C compressor failure
A/C compressor mounting bolt or fastener becomes loose, causing clunking noise. Compressor then breaks and must be replaced. Described as a recurring problem at 80,000 miles across multiple units.
When: Approximately 80,000–85,000 miles
Symptoms owners cite: Squealing noise from belt; Clunking noise from AC compressor; Loose fastener on compressor mounting; AC compressor mechanical failure
Repairs/costs cited: Complete compressor replacement required with new belt. Owner paid ~$350 for parts and labor at independent shop due to dealer cost of $800+. If not replaced, would have seized, broken belt, and caused engine overheating/cracking.
Engine fire
Vehicle caught fire while parked for over one hour. Fire department assessment indicated fire originated in engine compartment, likely from engine defect causing massive damage.
When: Unknown mileage; vehicle parked when fire occurred
Symptoms owners cite: Vehicle caught fire while stationary; Fire originated in engine compartment per fire department
Repairs/costs cited: Vehicle totaled per insurance assessment. Fire department investigation documented.
Idle control solenoid failure
Idle control solenoid malfunction causes uncontrolled idle speed increase, leading to unintended acceleration.
When: 68,000 miles
Symptoms owners cite: Vehicle speeds up on its own while driving; Becomes very difficult to stop; RPM continues to climb even in park
Repairs/costs cited: Mechanic diagnosed idle control solenoid as cause. Car had to be towed.
Transmission failure/slipping out of gear
Transmission slips out of gear while driving, leaving vehicle without propulsion at highway speeds. Vehicle loses power suddenly. Transmission is shot and requires replacement at significant cost.
When: Less than 65,000 miles typical; some reports at 50,000+
Symptoms owners cite: Transmission slips out of gear during acceleration; Popping or loud noise during failure; Loss of acceleration and power; Vehicle coasts without engine power transfer
Repairs/costs cited: Complete transmission replacement required; cost $3,000–$3,500 reported by owners. Catalytic converter damage occurred concurrently in one case ($3,500 total repair).
Mass airflow (MAF) sensor failure
MAF sensor fails, triggering check engine light. Replacement does not resolve failure permanently.
When: 100,000 miles
Symptoms owners cite: Check engine light illuminates; Failure occurs over extended period (one year noted)
Repairs/costs cited: MAF sensor replaced by independent mechanic; failure recurred despite repair.
Oxygen sensor/pollution sensor failure
Oxygen or pollution sensor fails, causing abnormal acceleration. Replacement provides temporary fix; failure recurs.
When: 94,000–111,000 miles
Symptoms owners cite: Vehicle suddenly accelerates abnormally while driving at highway speed (60 MPH)
Repairs/costs cited: Dealer replaced pollution sensor; failure recurred one week later. On return visit, oxygen sensor and wiring replaced. Cost not specified.
Spark plug failure (stripped threads, plug fragment in cylinder)
Sixth spark plug threads strip or spark plug fractures, allowing plug fragment to enter cylinder. Fragment causes engine failure and overpowering fuel odor.
When: Under 100,000 miles
Symptoms owners cite: Overpowering gasoline fuel odor from vehicle; Engine mechanical failure
Repairs/costs cited: Spark plug stripped and fractured into cylinder; engine repair required. Vehicle in process of repair at time of complaint.
Cold-start stalling
Engine dies immediately after cold start in freezing temperatures (30 degrees or below). Does not occur in warmer conditions.
When: Temperature-dependent; complaint filed December 2009
Symptoms owners cite: Engine dies right after starting in cold weather (30°F or below); Dies even at highway speeds after cold start (60 MPH reported); Does not occur in warmer conditions
Repairs/costs cited: Mechanic unable to diagnose after multiple replacement attempts; correct part never identified. Owner seeking ongoing diagnosis.
Idle fluctuation and low-speed stalling
Idle RPM fluctuates unpredictably. Engine stalls during low-speed turns (15–30 MPH) with foot on brake, creating dangerous loss of power steering and brakes.
When: Progressive condition; complaints across mileage range
Symptoms owners cite: Idle RPM fluctuates; Engine shuts off while stopped at brake (foot on brake); Engine shuts off during low-speed turns (15–30 MPH), loss of power steering and brakes; Extremely dangerous turning scenario
Catalytic converter failure/breakage
Catalytic converter cracks, breaks off at mounting flange, or fails structurally. Breakage creates loud exhaust and dragging noise.
When: Variable mileage; one case concurrent with transmission failure
Symptoms owners cite: Loud exhaust noise; Dragging noise under car; Catalytic converter broken off at front flange behind mounting bracket
Repairs/costs cited: Replacement converter ordered from aftermarket supplier ($137.78); better weld quality than OEM part per owner.
E-85 flex-fuel start issue
Vehicle advertised as E-85 flex-fuel capable will not start properly or run correctly on E-85 fuel, only on gasoline.
When: From initial ownership; September 2005
Symptoms owners cite: Improper starting and running on E-85 fuel; Works correctly on gasoline only
Recalls/TSBs owners mention: Ford notified; stated they are working on repair for the problem
Electrical system malfunction (dash clicking, light flashing)
Electrical system experiences clicking noise under dash and all interior, exterior, and dash lights flash intermittently. Engine will not turn over.
When: Unknown mileage
Symptoms owners cite: Clicking noise under dash during start attempt; All interior, exterior, and dash lights flash; Engine will not turn over
Synthesized from 50 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the engine problem on the 2005 Ford Taurus?
It's a meaningful issue. 50 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 45 complaints that reported odometer mileage, most engine failures cluster between 63,000 and 100,019 miles, with the median around 78,000. A quarter of owners report trouble before 63,000; a quarter make it past 100,019. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.