Question about 2008 Ford F 450 Super Duty

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Have a 2008 f450 and the exhaust system was just cleaned it still has no power and will not go over 25 mph it said to drive to clean dpf

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To clean the DPF, the vehicle needs to be driven at 50-60 mph for an uninterrupted minimum time of 15 minutes. (Motorway?). If it won't go over 25mph that's a problem. You need a garage that has computer software, that can put the vehicle into forced regeneration. Other option is to have the DPF removed and the ECU reprogrammed, but there is a question about the legality of doing that.

Posted on Jan 02, 2014


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Posted on Jan 02, 2017

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SOURCE: no brake lights or turn signals on 2008 F450

try checking all of your fuses and see which ones are blown. you have two sets of fuses and they are under the hood of the vehicle and under the dash on the driverside or in the glove box. if the don't work after changing the fuses then your wiring for the turn signals and brake lights need to be cheked from the fuse boxes to the swith for the trurn signal and to your brake lights

Posted on Mar 24, 2009

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SOURCE: 2008 Ford F450 fuel pump relay fuse keeps blowing.

the fuel pump and radio are not on the same circuit, most liokely the fuel pump is shorted, that is the most common cause, get under the truck and disconnect the fuel pump connector at the tank, if the fuse doesn't blow then u need a new pump.

Posted on Dec 05, 2009

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SOURCE: 2008 f450 low power

My guess is that you have a 6.0 Diesel and somewhere over 90,000 miles. There are numerous issues with this motor including Head Bolts, Turbo Lubrication and a few other Injector Issues....

Posted on Apr 05, 2013

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Issue with Deisel Particle Filter identified and mechanic replaced, 4 weeks later Filter Blown and car has no power. Any thoughts what could be causing this problem?

I know little about the dpf other than what I have read. When they were announced the cleaning process was supposed to be automatic. An exhaust back-pressure sensor would detect a partially blocked filter and trigger a cleaning programme where the engine tune parameters would change causing a much higher exhaust temperature to develop and a solvent to be injected somewhere and shortly (70 or 80 miles) there would be a clean filter and no back pressure. Topping up the solvent reservoir was an essential maintenance operation.

In practice the requirement for a dpf has mostly resulted in another chance for the car owner to spend more money as often the back-pressure light would mean an expensive visit to the dealer in order for the solvent reservoir to be topped up and a cleaning programme to be started using a laptop and special software. I suppose some cleaning cycles might be automatic as promised...

Assuming your mechanic fitted the correct dpf in the correct way I am guessing the most likely cause of the problem is somehow the engine remained on the "automatic" cleaning cycle where the exhaust gas would be unnaturally hot. Perhaps there is an issue with the back-pressure sensor or a software glitch.

I am sorry I can't be more informative.

Apr 28, 2016 | 2007 Nissan Navara 2.5

2 Answers

While driving approx. 25 mph, bang and vibration like a flat tire quickly followed by horrible rotten egg smell. started stalling out and vibrating very hard couldn't get over 40 mph.

It sounds like a plugged catalytic converter. It's kind of like a muffler type thing on your exhaust system. It burns all the unburned fuel that your engine sends through the exhaust for emission control. After a while they can get plugged up & need to be replaced. It's not letting exhaust out so it's choking your engine.=vibration, smell & backfire. You might be able to limp it to a service garage.. Save yourself a tow charge. Good luck

Jan 29, 2016 | 2008 Nissan Altima

1 Answer

2012 Benz. are DPF sevic able

Hi David.
As far as i know the Mercedes DPF doesn't require a service.
2 important things you should keep in mind.
1: a proper oil grade with low ash, as Mercedes recomend.
2: drive with steady speed at 60 MPH as long as possible while you driving on motorway , this will clear/ clean the DPF.

Sep 17, 2015 | Cars & Trucks

1 Answer

Hi i have honda accord 2009 diesel have dpf problem. Now replaced by honda but dpf check system light comes after few hundred miles. Nothing comes in their dignoistic machine plus out side temperature...

I don't know much about the diesel particulate filter system yet other than what I have read.

All the articles on the subject I have seen so far indicate the trigger for starting the automatic DPF cleaning cycle is excessive exhaust back-pressure. When the pressure sensor in the exhaust detects excessive pressure the engine management values are changed to make the exhaust very hot and a special solvent from an on-board reservoir is forced into the system and the cleaning process of the DPF is underway.

The articles suggest topping up the reservoir of special solvent is a routine service item. Anecdotal evidence suggest neither the cleaning process or the topping up are automatic or routine but rather another way for dealers to rip-off customers.

When the cleaning process no longer restores minimal back-pressure the DPF must then be replaced at what anecdotal evidence is a very high cost.
I could be wrong but I suspect before the engine management system recognises excessive back-pressure to be a problem and record it as a fault it would have to record a certain number of instances in a certain time-frame and if that criteria isn't being met there will be no faults stored.
Certainly this is a case for an obd recorder to be fitted to your car to record the live data which can be analysed by the dealer later.

I speculate the pressure sensor, wiring or connectors might be faulty or inaccurate or you really do have a back-pressure problem, either because the DPF they fitted is faulty or of poor quality, the work is of poor quality or because there is something wrong with the rest of the exhaust system.

Personally, because I have experienced back-pressure problems increasing during a journey being caused by exhaust silencer boxes I would start by removing everything rear of the DPF and give each part a shake and compare the weight with a new one of the same type.
Just my opinion you understand.

I would need to refer to a wiring diagram and an overview of the engine management system to form an opinion whether the exterior temperature indicator is a coincidence or is linked.

Good luck!

Feb 04, 2015 | 2009 Honda Accord

1 Answer

HC were high on smog on 1998 deville

Replace the exhaust converter if it is 15 years old

New Spark Plugs

New Air Filter

New Clean Engine Oil --Full Synthetic 5W-30

New Upstream Oxygen Sensors

Clean MAF Sensor

Feb 08, 2013 | 1998 Cadillac DeVille

2 Answers

C5 hdi sx 2.2 keeps saying unblock diesel filter

this is not referring to the dieselicon1.png fuel filter. it is referring to the DPF Diesel particulate filter which is located in the exhaust system.
to unblock it you need to make a 40min journey at or over 2500 rpm
(50 mph in 4th gear) this is known as a regeneration brings the DPF up to around 400 degrees which burns out the old soot particles this is a normal process during normal driving but too many short /slow trips can cause a blockage in the filter

May 24, 2012 | 2003 Citroen C5

2 Answers

I have a DPF light that despite following the Suzuki guideliness to drive at certain speed for a certain amount of time, this light has not cleared. I have already had a sensor in the exhaust replaced that...

A diesel particulate filter (DPF) collects particulates in the engine's exhaust, basically unburned fuel. Every so often the DPF will need to regenerate. What this means is when a certain amount of particulates accumulate in the DPF, a small amount of raw fuel is injected into the DPF to increase the temperature. The increased heat burns the particulates resulting in fewer nasty things going into the atmosphere. However, the regeneration process leaves a small amount of ash in the DPF which accumulates over time. You may have to have the DPF professionally cleaned (it's not a DIY thing) in order to restore its performance.

Mar 19, 2011 | Suzuki Grand Vitara Cars & Trucks

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Jaguar S Type, DPF light will not go out even though it has been replaced

it doesn't rave to ignite and clean the exhaust system even though i press the dpf button

Jan 02, 2011 | 2005 Jaguar S-Type

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P0471 and p2002 codes, Audi A6 2.0 DPF S-Line Auto

The DPF is designed to be self-cleaning to a certain extent if the engine is run for a good length of time the deposits should burn off. I would kick up a fuss with Audi about the warranty, ask them to show its exclusion. Unless the DPF has become physically damaged by something you have done then they need to have it fixed as it is a result of the deficiency in their design. This is not like some damaged tyre, open to abuse by the driver, the DPF is integral to the vehicle operation and through no commission on your part it is not functioning as it should.

Jul 27, 2010 | 2008 Audi A6

1 Answer

Exhaust filter

Particulate filters are self cleaning. If the warning light comes on, you will need to take a long drive every so often to get the filter hot (It is a built-in part of the exhaust system.) Some models will also dump extra fuel int the system to help ignite the soot buildup and assist to "clean' the filter.
You need do nothing else; just get it really hot for a while each time the warning comes up. If you ignore it and do only short trips, it will clog up and need replacement.

Dec 27, 2008 | 2008 GMC Sierra 2500HD 2WD

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