Question about 2000 Chevrolet Impala

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3800 series2 flutters, missfires with powerloss when acceleration is apllied but idles fine,surges when warm and seems to run normal when very light on throttle. eventually gains and maintains highway

Doesnt burn or lose oil oil is clean compression reads 160+it seems when throttle is applied that the engine is blowing air out rather than a detonation of air/fuel mixture

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  • 30 Answers

Have the intake gaskets been replaced? you could be getting a little coolant in the cylinder. these are a SUPER common problem on 3.8 series 2 engines

Posted on Mar 31, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 12 Answers

SOURCE: rough idle / engine surges until power is applied

Sounds like a possible vaccume hose leak?

Posted on Feb 07, 2009

hotrodtod38
  • 141 Answers

SOURCE: running rough

EGR MAYBE ?

Posted on Feb 13, 2009

bitchn65cuda
  • 70 Answers

SOURCE: 1996 s10 2.2 engine starts but idles rough and will not rev up.

Hi! You must be frustrated by now! your code is marking that the O2 sensor is bad in bank 1. Did you replace the O2 sensor that is located  before the catalytic converter?  The S10 has an O2 sensor specially made for that cat. its about 30$ That would explain for your blackened spark plugs; your pc on the car is asking for more fuel. GOOD LUCK!!

Posted on Apr 29, 2009

  • 38 Answers

SOURCE: 1989 Chevrolet C1500 with 5.7L V-8. Engine dies

fuel pump is working but when accelerating it doesnt pump enough fuel up to the engine then it will fall on its face if it is a electric pump you may have to drop the tank if it is inside and replace it if it is on the engine replace it thats what is exactly wrong with it

Posted on Jul 31, 2009

roniecon
  • 6826 Answers

SOURCE: Knock engine sensor light on truck is hesitating/

Did they replace the knock sensor?Check the wire going to the sensor(knock).Look for a bare place hiting up against something ,grounding it out.Make sure the plug to knock sensor is good.And make sure it is making a good connection,Knock sensors also ground a part of the computer to feed back imformation.This connection is a must,the truck will not perform at all,stumble,miss,and carry on.Sometimes even backfire.If they did not replace the knock sensor,replace it with high quality sensor from NAPA,or oem from dealer.This sensor has to be made perfect,no room for inperfection.The knock sensor is easy to replace,they just screw in a hole in the block.When removing the sensors,nothing will come out such as oil or water,this is a dry threaded hole.It is a bell shaped sensor.If you don`t know which sensor is bad,purchase one.replace one,and if there is no change,replace the other side with the old sensor you just took out,it will be a good one.I hope this helps you,Let us know if it does.

Posted on Oct 05, 2009

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