Question about 2003 Chevrolet Impala

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Whining noise coming from under the hood

When I start my car a whining noise starts and when I put my car in drive the noise gets louder..When I'm on the interstate the car beings bucking and hesitate when I start to accelerating this only happen when I'm going 70mph or higher or use the cruise control. The car seems to have a hard time shifting gear when I'm on the interstate as well... the car only has 88,500 miles on it.

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  • Charles Dec 09, 2012

    I just remembered one day coming home from college I stoped at a BP gas station i put gas in the car and all of this problems started i chaged the fuel filter and didnt fix and anything i dont have any check enigine light on but one night i was driving and the check enigine light was flicker on and off very fast at the same time the car was bucking and make a crazy noise i need heard before

  • Charles Dec 09, 2012

    made***

×

1 Answer

May have a cylinder misfire

Have a shop check it out

Go for a road test & go along, to explain
& duplicate the problem

Posted on Dec 09, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

IFIXALL
  • 868 Answers

SOURCE: monte carlo

You need to rebuild the transmission,it's over heating. May want to check your transmission cooler first .
Please rate this!

Posted on Jun 11, 2008

  • 3 Answers

SOURCE: Rough idle, Car shakes, sputters and misfires upon acceleration

It sounds like you may have a problem feeding the fuel to your engine, I had the same problem with my 89 RS. All the 1989 model's fuel systems were recalled. I think you may need a new fuel pump. The fuel pump is located inside the gas tank in the rear of the car right under the rear axle. The fuel pump itself isn't too expensive, but with other small parts such as the electrical harness upgrade and fuel filter and the labor you should be looking somewhere in the $500 range. I hope this helps.

Posted on Jan 12, 2009

  • 3 Answers

SOURCE: Chevy venture 2004 Transmission

Bring to tranny shop or repair shop, have it scanned for trouble codes, many electrical parts and solonoids in those trannys, possible it may just be a shift solonoid bad or needs adjustment, much cheaper than replacing tranny. good luck!

Posted on Feb 09, 2009

  • 11 Answers

SOURCE: Transmission occasionaly hesitates and I can feel it when it shifts, more than I should.

There are diagnostic tools that could help detect what your problem is. The Snap-On Modis, or preferably a "Tech-2" GM scanner. Any reputable transmission shop, or GM dealer should have at least one of the two. It sounds to me like it could be the transmissions "EPC" (Electronic Pressure Control solenoid) The EPC controls main line pressure, in an effort to keep shift firmness, and shift duration at one specific level. This is to compinsate for the natural wear a transmission encounters, and to keep emissions as low as possable, by keeping shift duration low. When the EPC malfunctions (and thats somthing that they like to do in the 4t65E), it typically starts to shift harder than normal. They typically throw a P1811 code. (P1811 is a "max adapt-long shift" code) And the malfunction can be intermittent. Hope this helps, and good luck.
Logan

Posted on Apr 19, 2009

csmock132
  • 4669 Answers

SOURCE: 1997 Suburban 4x4 5.7L Transmission whines until it shifts

You rear planetary set is worn from a restricted cooler.

Posted on May 06, 2009

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spin fast to charge the battery so it slips on the belt but thats what the noise is the belt check the battery at autozone for free
and if thats not it its the belt

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