There is nothing more frustrating and annoying than your vehicle emitting strange humming noises, and you just can’t find the source or self-diagnose the problem. Many Ford Rangers have complained about weird noises and vibrations coming from the engine, especially when accelerating. So what could the cause be of these strange sounds?
If you experiencing a loud humming noise sound coming from the engine bay of your 2012+ T6 3.2L Ford Ranger, it could be any of the following:
Most owners who reported this phenomenon are still on very low mileage. This issue usually occurs before the first service, however, it has been reported on slightly higher mileage T6 Rangers too. The good news is, it’s not a serious problem and nothing to really freak out about. In most cases, these issues were detected early in the vehicle’s life, and the dodgy components were replaced under warranty.
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Ford Ranger Humming/Whining Noise When Accelerating
The humming or vibrating noise is caused by pulses from the oil pump to the oil pan.
Under warranty, the dealership should replace the oil pan and oil pump pickup. The new designs prevent vibrations and noise.
The service deals with the noise during hot idle or cold starting, replicating the issue. Some notice it after starting but it goes away after driving. Others find it louder when the engine’s fully warm and idles for a bit.
There was a service Bulletin released by Ford which you can read here: T6 Hot Idle Moan
Ok, what if your Ranger is giving a weird ticking noise? Let’s see what the possible culprits can be then.
Ford Ranger Ticking Noise During Acceleration
Odd noises are tough to pinpoint. Mount a camera near the suspected area or drive near a wall with windows down for better identification.
A ticking engine sound might signal a serious issue. Dealerships sometimes struggle to diagnose, suggesting random component changes if under warranty, especially with intermittent problems. These sounds often hint at an impending component failure, making you feel anxious.
Below are a few possible causes of a ticking sound on your T6 Ranger under acceleration.
|Exhaust Manifold Gasket||Sealing component between exhaust manifold and cylinder head. It prevents exhaust leaks.|
|Piston Slap||Sound generated due to excessive movement of pistons within cylinders, leading to noise during engine operation.|
|Worn Pulley||A deteriorated or used-up component responsible for belt movement, often leading to belt slippage or noise.|
Exhaust Manifold Gasket
A leak in the exhaust manifold gasket can result in a ticking noise similar to a musician’s metronome. This noise is very obvious when the engine is cold. When one or more bolts around the manifold are broken, it creates a gap that allows the exhaust gasses to seep out around there. This causes a ticking sound, and possibly what you are hearing.
A piston slap occurs when there is excessive sideways movement inside the cylinder. This happens when there is too much room for piston movement, creating a ticking sound.
Excessive clearance on one piston in its cylinder creates a rattling and ticking sound when the skirt of the piston hits the cylinder wall.
A worn idler pulley causes squealing or rough rattling noises. Clicking or ticking sounds matching engine RPM signal belt or pulley issues if the noise rises with RPM.
What can be the cause of rattling noises coming from the engine under load/acceleration? Let’s see.
Ranger Rattling Noise During Acceleration
If you hear a metal rattling noise in the engine during various driving conditions, this section can help.
The noise occurs during idling, acceleration, and coasting without the foot on the accelerator pedal.
Consistent rattling during all driving conditions points to a component constantly in motion from engine start.
Those would include all rotational and breathing components like:
|Exhaust Mufflers||Dampens and minimizes exhaust noise and directs exhaust gases.|
|Pulleys||Redirects belts, controlling various engine accessories.|
|Timing Chain||In older 4.0 SOHC V6 engines, controls engine valve timing.|
|Engine Internals||Includes bearings, ensuring smooth engine operation and reduced friction.|
|Belts||Transfers power between engine components, like alternator and water pump.|
|Heat Shields||Protects surrounding components from excessive heat generated by the engine.|
|Nut/Bolt||Fasteners used across the engine components for assembly and maintenance.|
To identify exhaust issues, lightly tap the mufflers and catalytic converter with a rubber mallet while the engine runs. Also, while under the vehicle with someone shaking the exhaust, listen for noises from these components.
The catalytic converter, located toward the front after the downpipe, contains a dense honeycomb-like structure. With age, it might break apart, causing rattling sounds while the vehicle is running. If so, it may need replacement.
While inspecting under the vehicle, check the exhaust and transmission heat shields. These thin, flexible plates deflect heat from the body. If bent, they can vibrate and produce rattling sounds at specific RPMs.
A damaged bearing can be detected during an oil change if the oil feels gritty or rough. Fluctuating oil pressure or a low-end knock signal potential issues. A sprung crank bearing often requires costly bottom-end repairs.
The 4.0 V6 engines were known for timing chain ticks due to worn-out chain tensioners, called cassettes, causing loose chains that produce rattling noises.
Ranger Rattling Noise Under Acceleration
If you’re a T6 Ranger 3.2 Automatic driver experiencing odd rattling and vibrations when acceleration and deceleration, this section addresses these issues.
Owners reported these problems during cruise control use or when it’s off, particularly at speeds of 100-120km/h. A noticeable droning noise and slight shudder occur at 2000-3000 rpm with a change in engine load.
Described as a metallic droning akin to a worn bearing or diff whine, it’s different as the diff’s sound occurs mainly under acceleration. If sure it’s not the diff, bent or broken half-shafts might be the cause.
Bent or broken half-shafts result in wobbling and vibrations, especially at lower speeds and during braking.
Whining, knocking, vibrating, and rattling noises can be annoying and very hard to diagnose. At the end of the day, these are simply guidelines on what the problem COULD potentially be. Unfortunately, the dealerships aren’t always very helpful or willing to diagnose a rattle and many simply fob it off to be the norm or an engine characteristic you will just have to live with.
Truth is, no rattle or weird noises should be ignored since it could turn out to be something very serious and lead to catastrophic damage later on. Grab a mate and get him/her to assist you while you try and diagnose where the noise is coming from.