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Justin Halverson Posted on Jan 24, 2014
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99 f150 whines unless ya put on the gas

99 f150 4.6 engine whines unless ya put on the gas and when ya start it all the gauges go to the max then back down again the whinning is commin from the air intake buffer already replaced it still vibrating and it reads a code of the emission control malfunction is all it says but I replaced the charcoal canister

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Michael Kellar

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  • Expert 62 Answers
  • Posted on Jan 24, 2014
Michael Kellar
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Sometimes the IAC valve can cause a whistle sometimes resembling an airhorn. Does the truck have a rough idle? With it having an emission leak code i would assume that you probably have a hole in the rubber boot that goes to the PCV valve located in the passenger valve cover. There is a plastic tube that runs from the back side of intake behind the throttle body to the valve cover it will have a rubber elbow on each end of it. Look at the end behind the throttle body. It will probably resemble this.
99 f150 whines unless ya put on the gas - 0aa48e97-8f8a-4d6c-aa31-43148dae26f9.jpg

2 Related Answers

Anonymous

  • 1 Answer
  • Posted on May 12, 2009

SOURCE: gas gauge malfunction in '04 Pacifica

I am NOT a mechanic, just had the same problem. Took it into dealer and them updated computer codes and it solved my problem.

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Anonymous

  • 165 Answers
  • Posted on Oct 28, 2010

SOURCE: emission control system malfunction code po446

Code p0446 is for EVAP vent valve performance. Unfortionly there isn't just one item that can cause this code and the test require the use of a scanner. You can do a visual check but other then that with out scanner its just going to be replace and hope. That could wind up being exspensive. 1116f81.png

Testimonial: "where is the evap control module located?"

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Dodge nitro R/T 2007 gas gauge ALWAYS says FULL

If the gas gauge of your 2007 Dodge Nitro R/T always shows a full reading, there could be a few possible causes for this issue:
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  2. Wiring or electrical issue: There might be a problem with the wiring or electrical connections between the fuel level sensor and the gauge. If there is a loose or damaged wire, it could prevent the accurate transmission of fuel level data to the gauge.
  3. Instrument cluster malfunction: The problem could be with the instrument cluster itself, where the gas gauge is located. If there is a fault in the cluster's circuitry or display, it may cause the gauge to always show a full reading.
  4. Gauge calibration issue: In some cases, the gas gauge might be improperly calibrated, resulting in it always displaying a full tank. Recalibrating the gauge might resolve the issue.
To address this problem, it is recommended to take the vehicle to a qualified mechanic or an authorized Dodge service center. They will have the necessary diagnostic tools and expertise to identify the exact cause of the issue and perform the required repairs. They may need to inspect the fuel level sensor, check the wiring connections, or evaluate the instrument cluster to resolve the problem.
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hi these boxes tended to be a bit noisey anyway but a simple test for the release bearing and first motion shaft is easy first make sure g/box oil level is ok
start engine ,take your foot off the clutch peddle compleatly you have a whine, put your foot on the peddleVERYlightlynoise should change ,if the noise is more of a rattle than a whine it is coming from the clutch release bearing if it a definate whine it is either the spigot bearing in the flywheel or the first motion shaft
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