Question about 2001 Chevrolet Impala

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Hello I'm a mechanic for a garage an I'm currently working on a 01 impala I got the car with the plenum blown apart so I replaced it along with injectors fuel rails all the sensors on the throttle body fuel pump filter plugs wires.. it will start but rough idle then dies.. spaying cleaner to it kinda cleans it self out now I can't get the check engine light to come back on so not showing any codes any advice would be appreciated Thank you

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  • 76 Answers

You have problems somewhere with coil pack or use a, Noid light to make sure everything is firing. Sounds to me like your not firing on all cylinders.

Posted on Mar 31, 2015

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1997 dodge dakota v6 engine wont start replaced

turn the key to the on position a see if you can here a buzzing sound around the fuel tank,if you don't hear a sound then. (be very careful while doing this) with the key off take a fuel line coming from the tank loose,make sure its pointed away from you and turn the key to the on position,see if any gas comes out,if not then your fuel pump is probably bad.

Posted on Mar 05, 2009

csmock132
  • 4669 Answers

SOURCE: 1989 GMC 2500 5.7L - engine surges and stalls at idle. Loses power at cruising speed.

Wow you have replaced a lot of stuff. Lets go back to the Fuel pump. When you replaced it did you replace the hose between the pump and the sending unit. These are common for splitting. Have you hooked up a fuel pressure gauge to check what pressure you have? It should be real close to 13 psi and should raise to at least 18 or 19 when you pinch off the return line.

Posted on Jun 02, 2009

  • 3 Answers

SOURCE: 1989 Cavalier Z24 Stalling problem

Have you heard of Noid lights? You unplug the fuel injector and plug these in and they will light up if the injector is getting power. This might give you a better hint. There are also lights that go inbetween the spark plug and wire. Between these two items you may be able to narrow down the problem to a specific system. I believe that your car has a coil pack. Some of these engines have problems with the crank trigger. I believe it is located on the back side of the motor. If you decide to change it, be careful. I have heard of them breaking into two pieces and becoming a big problem.

Posted on Jul 21, 2009

  • 4088 Answers

SOURCE: We have a 2000 Pontiac Grand Am Se. The car

If this car uses an electrically heated O2 sensor, the heater portion may be bad. If the car has a lot of miles, the O2 sensor may be getting bad also.

Posted on Aug 17, 2009

dturnlund
  • 45 Answers

SOURCE: engine runs rough at idle and bucks at highway

I had a similar problem in a 1994 Taurus, and after spending nearly 300$ on ignition parts, it turns out the problem was a bad spark plug wire that cost me 8.88$ to replace.

Posted on Mar 01, 2010

Testimonial: "n.o. 1 spark plug wire it is. thank you"

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Classic! These codes typically come when the throttle body air plenum gasket cracks. The engine will usually idle rough as well. If it is idling rough, you can spray carborator cleaner around the throttle body with the engine running and you should immediately notice a difference.
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