Question about 2004 Ford F250

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Low rpm miss

Truck has low rpm miss when you hit the gas until you get to a higher rpm than it clears up. idles fine

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  • Expert
  • 34 Answers

Bad espark plug or bad coil very common on ford to burn the plugs

Posted on Aug 10, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75797 Answers

SOURCE: "check system charging" is coming on at high RPM's

You have an alternator problem, have Kragen auto or a store like it test the alternator for proper operation, it's free.

Posted on Nov 14, 2008

  • 43 Answers

SOURCE: Truck idles rough but at

Give it a complete tune-up, New spark plug and wire.new Ignition coil. Depending on the engine either replace ,Cap and rotors or coil packs.Also might want to get the fuel injectors service

Posted on Nov 17, 2008

michigan man
  • 3533 Answers

SOURCE: At startup my 94' F150 will oscillate from high to low idle

I had this problem once on an econoline van and it was the plantum gasket but before you change this check all the vacuum lines and get a digital volt meter and test the voltages on the mass air flow sensor and if you have to change the plantum gasket auto zone can print you out a diagram stating all you have to remove to replace it

Posted on Jan 09, 2009

freetek
  • 5568 Answers

SOURCE: engine misses at low rpm's

Actually, the higher RPMs mask misses that are very noticeable at idle.
Check under the hood at night in a dark place and look for fireworks around your ignition wiring; if your vehicle still has the original (crappy) ignition wiring, you may be due for replacing it.
Also, I'm pretty sure you have some version of 'on-board' diagnostics which can be scanned for stored errors. Call first, but most chain auto parts stores offer a free scan of the computer and may be able to pinpoint your problem in a minute or two.

Posted on Oct 09, 2009

  • 532 Answers

SOURCE: My 1996 Ford F150 4.9l 5spd. rough idle, poor drivability, stall

try replacing the throttle position sensor

Posted on Oct 24, 2009

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1 Answer

Vibrations during idling


which engine.??? never post lacking engine ,here is why.
1.3 L G13B I4
1.5 L G15A I4
1.6 L G16B I4
1.8 L J18A I4
1.8 L BP-ZE I4
1.9 L XUD9 diesel I4

Ill answer in the generic and for GAS engines. only.
that is illegal RPM, the ECU regulates it to 800 all the time
that means the ECU can not regulate the RPM now, for many reasons.
and sure it vibrates too low, that is normal for all 4cylinders to do that.
no bad engine mounts never lower RPM to 600, ever.
they dont control idle speed at all.
the #1 reason for most cars to idle too low are:
1: EGR leaks, (clean it)
2: ISC stuck closed (electric idle speed acututor dirty) clean it.
3: gross misfiring , caused by bad spark or bad fuel mix.
4: low compression on 1 or more cylinders (real low) Do compression test at WOT. throttle.



Apr 19, 2014 | 1997 Suzuki Baleno

3 Answers

Engine cuts out


hi there,

have you check the gas filter, pump, air filter..

`jack

May 26, 2008 | 1990 Nissan Hardbody King Cab

1 Answer

2000 Chevy s10 2.2L very rough idle at low rpm


run a fuel pressure test, if that checks out fine it may be a faulty coil pack or ignition control module

Jul 28, 2009 | 2000 Chevrolet S-10

1 Answer

1992 16V - idles fine, drives fine. Only when foot of the gas jer


idle air speed control valve(iac),too low idle or driveline problem like play in the drive shafts. if you put it in park and give it to say2500 rpm and let go of the throttle,does it return to 900rpm?if it dips down to 5 or 600 then to 900 the iac is bad.

Jul 13, 2009 | 1992 Volkswagen GTI

1 Answer

Slight miss on a 2000 passat 1.8t


You answered your own question... the cause is the low octane fuel... the fix is the higher grade stuff... Also check into having injectors cleaned (or try a bottle of STP injector cleaner)

Mar 30, 2009 | 2000 Volkswagen Passat 4Motion

1 Answer

Van idles fine at low rpm's, however at 4000 rpms or higher van runs like timing is off or has bad gas?


the vehicle has a rev limiter built in. this is what you probably feeling. Are you passing? The rpm's shouldn't be that high at 60

Dec 21, 2008 | 2003 Ford Windstar

1 Answer

Engine miss above 2000 rpm


sounds like a valve problem. check compression running and non-running. valve sealing at higher rpm is usually a valve spring problem is if runs ok at idle.

Oct 22, 2008 | 1990 Jeep Wrangler

1 Answer

1991 toyota previa 132,000 ml. I have a problem with acceleration. The engine sputters when accelerating. I have completed a tune-up, and there were carbon deposits on the spark plugs.


I had a power problem, when cold idled just fine,when warm it would miss at idle, spudder on acceleration and sound just fine at higher rpm. found number three spark plug wire had burned through lower boot. Spark was firing to head at low idle. same wire burn twice with about 40000 mile between.

Aug 03, 2008 | 1995 Toyota Previa

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