Ford Ranger Engine Problems

Good news. Instead of a rubber toother timing belt, the engine in your Ranger has a timing chain. While the rubber belt type generally requires periodic replacement, the timing chain in your car should last the life of the engine.

A modern car like the Ranger has a heap of sensors that warn the on-board computer of something that’s getting too hot, causing the car to enter limp home mode to avoid further damaging itself. That means you could be looking at a problem as varied as the condition of the radiator and its plumbing, the intercooler, coolant pump, the EGR valve and more. Perhaps it’s a simple case of low coolant triggering the limp home. Certainly, these engines can lose coolant if the EGR valve is damaged or leaking.

But then you can also move along to the driveline, because a too-hot transmission will also trigger a limp-home situation. Is the transmission cooler working properly? Does the transmission have the correct quantity of fluid in it?

Start with the basics and don’t be afraid to give the car an electronic scan as the fault codes it has logged could be a big clue in what component is causing the grief.

The original vane-type oil pump fitted to the 2.2 and 3.2-litre PX Ranger engines was a source of great misery for some owners with failures and a peculiar oil-changing regime forced upon owners. If the gear-driven style pump you've replaced it with is a good quality item, it should last the remainder of the vehicle's service life.

Unfortunately, because your car was delivered before May 1 2018, it's only covered by Ford's three-year warranty, which, of course, has expired. New Fords delivered after that 2018 cut-off were covered by an longer, five-year warranty, but that's not much use to you.

The best thing you can do is tackle Ford Australia's customer service department to see if they're open to covering part of the cost of repairs on a pro-rata basis. This is a sometimes a possibility if the vehicle is only just out of warranty or has covered very low kilometres with a full service history. But in your case, I wouldn't be holding my breath.

By connecting the Ranger to a diagnostic computer, you should be able to work out what's constricting the engine power. Modern engines constantly monitor everything from boost pressure to fuel pressure, and transmission temperature to alternator output. Somewhere in those hundreds of parameters will be the problem and it should be fairly obvious to somebody who knows how to interpret the codes the car's computer will spit out.

Meantime, it could be that the engine's installation skipped hooking up a sensor or piece of wiring and that has caused the engine to go into limp-home mode which limits the power the car will produce in the interests of self preservation. On a really simple level, have you checked that all the turbocharger's plumbing is intact and the joints are tight post engine installation? Loose plumbing joints and cracked or split plastic tubing are a common way to lose turbo-boost pressure.

Ford's popular PX Ranger (sold from 2011 until its replacement in 2022) marked a distinct move away from timing belt technology, but prior to that, the Mazda-sourced engine in your vehicle uses a rubber toothed timing belt. As such, this belt and its tensioners and idlers require replacement at regular intervals.

The recommended belt-change interval for this engine is 120,000km or six years, whichever comes first.

There's been plenty of talk in recent years about the future of diesel engines in vehicles like the Ranger and Everest. And while there's a school of thought that suggests that they'll switch to petrol and petrol-electric hybrid drivelines, that hardly makes a diesel-engined version a dinosaur overnight. Take the Toyota Corolla, for instance: While the latest Corolla is available with a hybrid powertrain (and it's a very popular format) there are still plenty of people happily driving around in their 20-year-old Corollas with conventional drivelines.

The point being that progress is a fact of life. Every time a new piece of tech arrives that is seen as an improvement, car-makers will adopt it. Which means the previous technology is out of date, but not necessarily beyond its useful life.

If you think a plug-in hybrid Ranger or Everest would suit you, then by all means wait until 2024 (the rumoured launch date). But bear in mind that, by then, there may be talk of the next big thing in Rangers and Everests; an advance that could make even the plug-in hybrid look a bit yesterday.

There's been plenty of talk in recent years about the future of diesel engines in vehicles like the Ranger and Everest. And while there's a school of thought that suggests that they'll switch to petrol and petrol-electric hybrid drivelines, that hardly makes a diesel-engined version a dinosaur overnight. Take the Toyota Corolla, for instance: While the latest Corolla is available with a hybrid powertrain (and it's a very popular format) there are still plenty of people happily driving around in their 20-year-old Corollas with conventional drivelines.

The point being that progress is a fact of life. Every time a new piece of tech arrives that is seen as an improvement, car-makers will adopt it. Which means the previous technology is out of date, but not necessarily beyond its useful life.

If you think a plug-in hybrid Ranger or Everest would suit you, then by all means wait until 2024 (the rumoured launch date). But bear in mind that, by then, there may be talk of the next big thing in Rangers and Everests; an advance that could make even the plug-in hybrid look a bit yesterday.

It's definitely worth looking into as it's not normal behaviour for the Ranger and could point to a problem that, if not fixed now, could lead to a bigger drama down the track. A scan of the entire vehicle's electronics might show up a problem with the fuel system or throttle set-up. While it's tempting to look at the engine itself as the source of the revs flaring, don't rule out the transmission, either. A faulty torque converter or even a low transmission-fluid level could be the culprit here.

This sounds very much like a fuelling problem. Since a diesel engine has no ignition system (beyond its own compression) any fall off in performance can often be traced back to the fuel system.

The best bet is to take the vehicle to a diesel specialist that knows this make and model and will have either seen this exact set of symptoms before or will be able to make a logical diagnosis rather than just changing random parts that may or may not be the cause of the problem. Things that are likely causes, however, are the fuel filtering system, fuel pump and injectors. But don’t rule out something simple like a bad batch of fuel that is playing havoc with the entire system.