Question about 2001 Dodge Ram 2500 Truck

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Very long time to make power to pull up hill. throttle seems very stiff and cant here turbo untill hi rpm and then you reallygot to listen to here it.no black smoke and starts first click.does not miss or spit and sputter. truck was not started for over a month before now !!

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2011 115hp 4stroke runs strong to 3800 rpm but won't throttle up any higher. Compression is good, injectors have been cleaned and new plugs.


Nearly all the things that could limit the maximum revs of a mechanical unintentional nature would probably cause the power to reduce as the maximum rpm is neared so acceleration would similarly reduce and if climbing a hill the maximum would never be reached.

If your description is accurate and the engine produces normal power to 3800 without tapering and won't go any further it is something only electronic rpm limiting is capable of rather than the usual culprits of strangled intake, strangled exhaust, insufficient fuel or timing problems. Sometimes it was something as simple as the throttle butterfly not opening fully.

Checking the injectors is only half the testing the fuel system should have - the fuel pressure and delivery volume and regulator function needs to be checked.

Opel once made an engine of 1.4 litre and over time it was stretched to 2.0 litres and beyond. That engine pulled strongly until it reached a ceiling of about 5400 rpm, less for a high mileage model. It was impossible to make the intake ports large enough or to maintain a sensible shape to the ports which made the rpm self limiting and was my only experience of what you describe in over 40 years. In all other cases of limited rpm the power always tapered because of external faults.

Feb 24, 2018 | Cars & Trucks

1 Answer

My saab 95 1.9 tid revs fine in neutral when put in drive and pull of there's no power won't go above 3000 ram any ideas


HI Derek.

There are a few possibilities that come to mind.
3K RPM is generally about the break-even point for when Turbo boost would kick in. There is a dump valve on the turbo system that opens up and vents the extra turbo pressure under high-rpm situations where the boost isn't needed - say high but steady speed on a freeway. If the dump valve system is malfunctioning, then that anticipated turbo run-up in power won't happen.

Revving fine when in neutral may not tell you much, other than that the engine can rev. The gating system will (or should) run differently under load - whether climbing a hill or accelerating, this is where you want the turbo boost to give you the extra power. THat's where the exhaust gate should stay shut, or mostly shut, to allow the turbo to force more air into the pistons.

You might want to check whether the APC (Automatic Performance Control) for the turbo has a separate fuse. (The name might be different on your model, I'm remembering from my 80s/90s era Saabs). If the fuse is blown, that could also lead to lame performance, especially as I'd imagine that the system would be built to fail or go to full open if the APC fails or loses power - that'd keep people from having run-away power that they can't manage.

Hoping this helps

D

Dec 08, 2015 | Saab Cars & Trucks

1 Answer

When driving my 1997 Audi A 4 1.8t there is a loss of power around 3000 rpm, what could be causing the issue?


run the fault codes and look for a problem area in the vane actuator of the turbo
it could be a sensor problem or a MAP sensor problem
this is indicated by the pressures being generated or not generated by a turbo generating pressure from the throttle opening on acceleration or held at constant speed

Oct 19, 2015 | Audi Cars & Trucks

1 Answer

Peugeot 807


Have you checked the PCV system?? If its stuck in the closed position then you will lack power and turbo boost. A vehicle needs 3 things to make it run proper; FUEL,FIRE and AIR. Try that and see if it helps.

Jan 01, 2014 | Cars & Trucks

1 Answer

With my 2004 Ford 6.0 liter when pulling a hill with a load it seems like the turbo boost is not as strong after pulling for a while and the power is less. If I pull over and let it sit idling for a few it...


sound like engine getting hot when you pull a heavy load going up hills. when putting load on a engine it will over heat and will lose power because it inhales less air by volume.make sure your air filter is not clogged.a diesel engine needs a good air flow or breathe the air filter need to clean.also a restricted exhaust.if you have a restricted air filter and exhaust system the turbo not going to work good.also check coolant fan clutch.if you turn it by hand and it free wheel fan clutch needs to be replaced.if cooling fan clutch has resistance then its good.a bad coolant fan clutch will cause engine to over heat.

Nov 23, 2009 | 2004 Ford F250

1 Answer

No power, idling rough


Replace the catalytic converter and EGR valve

Jun 03, 2009 | 1991 Subaru Legacy

1 Answer

95 Landcruiser Turbo warning light comes on under heavy load


If you are "lugging" the engine, you will get increased exhaust temperature (EGT), this will trigger your "turbo" light(not a good thing), ideally you should have an aftermarket "pyrometer" fitted to your car, this will show you the optimum revs etc you should be using in any given circumstance.Or revise your driving technique, ie change down gears earlier.
The turbo should be idled down after long trips or heavy towing, this allows the oil temps to stabilise and turbine speeds to stabilise, thus idle for 2-5 minutes.

Dec 23, 2008 | 1995 Toyota Land Cruiser

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