Question about Dodge Ram 2500

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Lost of power when accelerate, changed fuel filter but worse. engine light on also.

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Im assuming since u say u changed fuel filter that this is acummins diesel. and when u say that made it wirse it makes me suspect a failing/failed lift pump. the lift pump supplies low pressure fuel to your injection pump which creates the pressure for your engine to make hp/torwue sounds like enigine may have been starving for fuel then when filter replaced air in system caused further starvation. replace your lift pump

Posted on Nov 15, 2009


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Struggles on acceleration around 50mph

How many miles does this vehicle have on it? Has it been well-maintained or not? Is the fuel filter old, dirty, or plugged up? When were the spark plugs or plug wires last replaced? Has the air filter been checked? I'm not sure I can help you with a solution without a lot more information about what's going on with this vehicle. Could be any number of reasons for this problem. Did it begin start suddenly, or has it gradually gotten worse and worse?
You may want to start by checking for air, fuel, and spark. A plugged air filter will prevent the engine from breathing. At 50 mph+, it's going to need lots of air. A plugged fuel filter will restrict the flow of fuel at all speeds, but it will be more noticeable the faster you go. Worn plugs and plug wires cause a weak spark, which robs the engine of power.
You don't mention anything about the check engine light. If there was a misfire the light should have come on. It's possible the EGR valve may be stuck partially open. You could have one or more vacuum leaks somewhere. The PCV or the exhaust system could be restricted.
Whatever you discover, don't throw parts at it and hope it gets better. You will have to isolate the actual cause of the problem first.

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When is the last time you replaced your fuel filter? I had one plug on me and I could not accelerate, it would idle and crawl, but mine was carbureted, it would be worse on a fuel injected car... Please let me know if it wasn't the problem.

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This happened to my 2003 Trailblazer at about 70,000 miles. Going uphill it would slow down and then downshift as it dramatically lost power. Bottom line, the Catalytic Converter was plugged. When first accelerating it ran fine but after that it acted up and got continually worse. You didn't mention if the service engine light came on or not. Something else that might cause the no power is the fuel filter may be plugged. Change it first as it is cheap compared to the converter. Good luck.

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Car was parked and running and just killed on its own and will not start. does this sound like the fuel pump or maybe fuel filter?

If the battery is strong and charged, starter is fine, car ran okay while getting progressively worse until it died and won't restart now, might be fuel filter or pump. I've dealt with two cars with fuel filter issues. Both would idle fine, but run progessively worse under load and eventually die and not start although everything else checked out. Engine turned fast enought to start, battery strong, alternator fine, air cleaner clean, all that. No start. Changed fuel filters and done. Everything back to normal. Both cars were about model year 1990 (1989 and 1991). Replaced one in a parking lot and car fired right back up and powered on home just fine, whereas the week leading up to it it ran worse and worse, hesitated on acceleration and finally would die if you hit the gas. Fuel filter may be in engine compartment. Looks like a canister with an in and an out for fuel. Pump is in gas tank and is way more work and money. Good luck, hope this helps.

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1 Answer

Trac light on dashboard came on lost acceleration car quite runni

The solution to my problem wasnt the recurity thing ,,,,,after a few calls and having to take it to the garage for repairs,,,HAD TO CHANGE REGULATOR-FUEL LINE FILTER AND FUEL PUMP ,,,Helpfull hint ,machanic tells me u should change the fuel line filter at least once a year if u use regular gas on a regular basses.It may help this from happening again.
The security thing works like this only if you think that is the problem,,,Turn key to ACC position and leave on for 20 minutes,Than shut key off for 10 minutes,after ten minutes try to start .Hope this helps someone thanks for any help.

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3 Answers


The fuel filter is tucked away inside the frame, located on the drivers side, right about the middle of the door. If you crawl under the truck, looking up, you will see the fliter hidden neatly behind the beam of the frame. Its very easy to take off. Buy a new filter before you take the old one off, and you will then know what to look for. Hope this helps.

Aug 04, 2008 | 1999 Chevrolet Silverado 1500

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