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2005 ford 250 runs rough and will not go above 3000 RPMs

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  • 77 Answers

Is your check engine light on? There are many reasons for this. Bad EGR valve, bad PCV valve, sheesh. Vaccumm leak, bad motor mounts ... gosh.

Posted on Jan 28, 2014

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Posted on Jan 02, 2017

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SOURCE: 1995 Chev S10 4.3L V6 rough idle and under power

This make/model has a chronic problem with EGR clogging. If you have a dashboard indicator showing "check engine" most likely it is a trouble code indicating and EGR (exhaust gas recirculator) valve problem. Symptoms are rough idle, and surging and stalls.

What happens is sediments from the exaust manifold get sucked up into the valve when it opens, then stick in the valve and keep it from closing. When the valve is open when it should be closed, the engine runs very rough.

I removed my egr and then dislodged the sediment (pea-sized debris) and then re-installed the valve. Three days later, the same "check engine" and same rough idle. I must have did this at least three or four more times.

What I found that gave me a permanent solution was an aftermarket filter gasket that keeps debris from clogging. I don't remember the name of the product, but a search for "EGR filter gasket" may lead you to the product.

Install the gasket between the EGR and the exhaust manifold and you should be good to go. Note: on 1995 and newer models, disconnecting the EGR from the wiring harness (common on R&R) may require the computer to be reprogramed.

Posted on Dec 24, 2008

mcalkins3
  • 123 Answers

SOURCE: ford f350 6.0L Turbo runs rough

Still sounds like there is a fuel issue. I would check the obvious. Check the Air filter and fuel filter and water seperator. Debris could have gotten into the new injector, which also could have upset the other injector. Get the exact code from the dealer your truck experianced.

Posted on Oct 18, 2008

  • 21 Answers

SOURCE: 88 Ford F 250 with 460 efi running too rich

check the o2 sensor, throttle body, vaccum lines, that timing and spark is correct and working on all cylinders( broken plug or wires), try the module on the distributor sometimes that can do it to but usally it runs good then gets bad as engine warms, to me is sounds like timing which also could be in the valvetrain or in the chain and gears in front... hopefully this gets you started in the right direction

Posted on Apr 20, 2009

pippall
  • 1486 Answers

SOURCE: rough idle 2003 f150

plugs or wires need replacing.

Posted on Jun 07, 2009

  • 26 Answers

SOURCE: rough idle

had the same issue with mine, a full tuneup and a really good cleaning for the throttlebody cleared mine up.

Posted on Sep 22, 2009

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The car does have a maf, but it is rarely the cause of rough idle. Rough idle is usually caused by vacuum leak, pvc issues, or idle air control valve. What does it do, specifically, and is the engine light on?

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Ford f350 6.0L Turbo runs rough


Still sounds like there is a fuel issue. I would check the obvious. Check the Air filter and fuel filter and water seperator. Debris could have gotten into the new injector, which also could have upset the other injector. Get the exact code from the dealer your truck experianced.

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