Gutless Ranger.

[goathunter1]

No, not a Commission employee!! My Ford Ranger has become a gutless machine. Starts first time. Idles perfectly. I can rev it furiously in the driveway. Come to a wee slope - useless. Long hills are a nightmare. Some of you will know what the matter is. I must say it’s probably 12 years old and, without going out and checking, has about 120k miles on it. Serviced annually.
Help.

 

[landkeeper]

Fuel filter, fuel pump ,blocked air filter, clogged intercooler , sticky turbo accentuator mass air flow meter

 

[Woodsmoke]

My guess would be fuel filter or blocked intercooler

 

[Woodsmoke]

It could even be the in-tank fuel filter at the bottom of the fuel line? My Shogun had exactly the same problem. Turned out to an accumulation of crap that blocked the filter when the engine was under load and demanded a greater fuel flow. Best bet might be to get it plugged into a diagnostic computer?

 

[imnotrucknut]

Most common faults with common rail diesel engines regarding power loss is the maf sensor this is normally located between the air filter box to the inter cooler.some vehicles also have an absolute senser on the intercooler pipe itself.i would firstly suggest disconnecting one of the sensors and driving uphill.this will put a mel light on which may go out once replaced or you'll need to get the fault cleared.also listen for a whistling hissing sound whilst driving this could indicate a split/loose intercooler hose.
Let me know the outcome

Gary

 

[Skietindiekop]

At that age it’s most likely an air leak on the turbo boost side or a perished small bore vacuum hose for the actuation of the turbo

 

[Chanty Wrassler]

fuel filter

 

[imnotrucknut]

Fuel and fuel filters on modern diesels are very rarely the issue unless in remote cases using super market fuel condensation in tanks .I'd check sensors first black smoke whilst normally driving is a good indication

 

[Dickie]

I had similar on a Defender it was a hose that ran under the air box had chaffed and had a small hole in it allowing the air pressure to collapse.

 

[243varmint]

There should be a drain at the bottom of the fuel filter. Check for crud in the filter. Modern diesel is made up of a percentage of bio fuel. Sometimes it forms an algee in the tank. Blocked air filter
Boost leaks from turbo hoses. Vacuum pipe leaks.
MAF and Map sensor faults will put the EML on.
If you can't see anything obvious get a garage that has a smoke pressure testing machine. Basically a big vape machine that uses air pressure to find boost leaks in pipes and vac hoses.

 

[Rob-E]

Intercooler hose

 

[goathunter1]

Lads, as ever, what a great forum this is. All of this is beyond me, but I’ll speak to the man that does my servicing - or, do any of you live in Scotland? I’m near Perth.

 

[Woodsmoke]

any of you live in Scotland? I’m near Perth.

I'm just outside Coupar Angus