The worst 2004 Kenworth T660 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
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Recalls 2
Service brakes, air
- What is wrong
- Kenworth is recalling 3,423 my 2004-2009 t2000, t800,t600, w900 and t660 vehicles. Increased brake excitation in a certain vehicle configuration which includes bendix drum brakes, wide base low profile single tires, and an ag400 or ag460 rear suspension, due to its unique brake clocking and cam tube length, can cause fatigue and cracking to brake assembly components.
- Risk
- Cracking can cause a complete fracture of the cam tube, which could increase stopping distance and decrease parking brake hold capability.
- Remedy
- Dealers will inspect the rear axle brakes assembly, replace cracked rear axle brakes assembly components where required, and install cam tube support brackets on all rear axle wheel ends free of charge. The recall is expected to begin or before july 25, 2009. Owner may contact kenworth at 1‑425‑828‑5440.
Recall number 09V239000 · Recall details
Suspension
- What is wrong
- Paccar is recalling 130 my 2004-2009 t2000, t800, t600, w900 and t660 kenworth trucks built with an ag400 rear suspension, long stroke brake chambers, and wide base tires (super singles). These vehicles may develop an increase in lateral and vertical axle movement. This movement may cause part or parts of the brake assembly (brake cam tube support, brake chamber bracket, brake chamber, brake spider) to develop fatigue cracks, possibly resulting in the failure of the part or parts within the brake assembly.
- Risk
- A failure may reduce vehicle brake performance, increasing the risk of a crash.
- Remedy
- Dealers will install the cam tube support brackets on all of the rear axle wheel ends. Inspect the rear axle brake assembly and replace it if cracked. The recall is expected to begin during november 2008. Owners may contact kenworth at 1‑425‑828‑5440.
Recall number 08V485000 · Recall details
Technical service bulletins for the 2004 Kenworth T660 10
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes
- Information Only – Windshield washer pumps have a high No Trouble Found rate
- Information Only:
- Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment...
- Information Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed,...
- Information Only:
- Kenworth: oil collection at cac intake pipe is caused by an imbalance in turbocharger pressures
- Paccar: engineering standards have changed and there are now engines with heat treated bolts
- Paccar: a software update is causing the check engine light to come on
- Kenworth trucks: reduced engine power from fuel starvation
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Questions about the 2004 Kenworth T660
Is the 2004 Kenworth T660 reliable?
Owners have filed 0 complaints about the 2004 Kenworth T660.
What is the most common problem with the 2004 Kenworth T660?
There are not enough complaints to tell.
How many recalls does the 2004 Kenworth T660 have?
2 recalls, covering service brakes, air and suspension.
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