Question about 2004 Chevrolet Silverado 1500 Crew Cab

2 Answers

The check engine light illuminates, DIC indicates reduced engine power, vehicle idles roughly and vehicle acceleration is slow

Posted by on

  • 12 more comments 
  • vknott Aug 28, 2008

    check engine light eluminates after a few highway miles but dosent come on during local driving. 1994 Chevy Sub (10006000.00 miles) has high millage. Is there sensor or filter or valve that needs to be replaced with high milage?

  • Mtthwtrumble Sep 10, 2008

    DIC is flashing Reduced Power. Idle is rough and acceleration is slow

  • Anonymous Oct 05, 2008

    Check engine lights on, rough running engine and engine check light on, also engine reduced power signal is up?

  • Anonymous Oct 18, 2008

    Last night the check engine light came on and this morning I was looking things over and checked an electrical connection on the firewall under the hood at the steering column and when I squeezed it back together, the idle speed dropped and the information center displayed reduced engine power. Idles smooth with no power.

  • cardsbbhh1 Nov 25, 2008

    my truck says reduced engin power what does it mean

  • Anonymous Dec 02, 2008

    My engine light just came on last night. When I'm in neatral or idle, it comes very close to dying, but just drops to a low r.p.m. then kind of roughly jumps up.

  • tlaba17 Dec 04, 2008

    I have the same problem. I was driving to work this morning, and while sitting at a stop light, my engine RPM got very low, and it seemed like the truck was going to die. When I got on the interstate at 50 mph, the truck's check engine light came on, and the rough fluctuation in RPM continued everytime I was at a stop. Any ideas?

  • davleric Feb 01, 2009

    Diagnostic revealed battery needed to be replaced; new battery corrected problem.

  • Anonymous Mar 13, 2014

    After a cold start, engine power or acceleration is noticeable

  • Anonymous Mar 13, 2014

    shut off and clears except on days temp is below 20 degrees may do it 2 or 3 more times also has rough idle

  • Anonymous Mar 14, 2014

    idling rough and has loss of power

  • Anonymous Mar 16, 2014

    lost performance uphill

  • Anonymous Mar 18, 2014

    while driving engine reduced light comes on ,oil light comes on vehicle loses power

  • Anonymous Mar 27, 2014

    Check engine light came on. Was driving when I all of the sudden I couldn't accelerate, car started slowing down. Continued to do it on and off

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 373 Answers

HI...
THis problem is caused for
Lost of correlation between ACELERATOR PEDAL POSITION
AND THROTTLE ACTUATOR MOTOR.
Because your car has no acelerator cable.
The morer probable is the Trhottle actuator motor come damaged. 90%. 10% the accelerator pedal position.
If you turn of the car it will work OK> for a few time.
But the Service engine soon. will stay on.
Yuo can go to at ANy ADVANCE AUTOPART, AUTOZONE or NAPA AUTOPART. They make a diagnostic free.
If not. I recomend get the car scanned for see exactly why the light come on. and make the right repair procedure.

OK>> I hope this help on your question...

Thank you for use fixya.

Posted on Jul 25, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

Rough idling could be from a bad O2 sensor.

Posted on Feb 17, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Rough idle in drive, correct rpm


Car idle is rough Inspection Service & Cost A rough idling engine can be caused by a number of issues, some of them are serious while others tend to be minor, but the symptoms remain pretty much the same. The car will feel rough and bouncy when the engine is running. The car will also idle below its regular speed, display inconsistent RPMs and may produce a shaking, skipping or slipping sound when the vehicle is running.
While a rough idling engine may seem to be a simple inconvenience it often indicates a deeper problem within the engine. The vehicle should be inspected and repaired as soon as possible because small problems have a way of turning into expensive repairs. How this system works: The idle speed of an engine is basically the rotational speed the engine runs on when it is un-coupled from the drivetrain and the throttle pedal is not being depressed. The idle speed is measured in the revolutions per minute of the crankshaft.
When an engine is running at idle speed it generates enough power to smoothly operate equipment such as the water pump, alternator, and power steering but not enough power to move the vehicle itself. A passenger car will usually idle between 600 RPMs and 1000 RPMs. A properly functioning idle should run smoothly without skipping or slipping. Common reasons for this to happen:
  • Dirty Fuel Injectors: The fuel injection system injects fuel into the cylinders, which creates a mix of air, and fuel to ignite and burn. Fuel injectors have tiny nozzles to spray the fuel into the cylinder and they can become clogged over time. clogged or failing fuel injector creates a lack of fuel in the vehicle's engine. This can cause a rough idle, it can also cause symptoms such as slow acceleration or the car not feeling as if it has enough power. If the problem is addressed early, it is possible to clean the injectors, which will restore them to full function. If this condition is not addressed in a timely manner the injectors will need to be replaced. Incorrect Idle Speed: While the average idle speed falls between 600 to 1,000 RPMs, if your vehicle is experiencing a rough idle it could be due to an incorrect idle speed setting. A trained mechanic can easily adjust the idle speed, and it should stay at the proper speed. If an adjusted idle speed becomes inconsistent or changes at random intervals there may be a bigger problem that needs to be explored. Vacuum Leak: If the vacuum system has a leak, it can seriously affect the ability of the vehicle's computer to regulate the air to fuel ratio. This can lead to a rough idle and if the problem is not addressed the car may experience slow acceleration and a lack of power. Vacuum leaks should be inspected and repaired immediately. Incorrectly Installed or Damaged Plugs: Spark plugs are responsible for creating the spark that allows the vehicle to burn fuel. If spark plugs are improperly installed or malfunctioning, the idle speed can be affected. The vehicle's engine may vibrate or there may be slipping or straining sounds coming from the engine. Defective or Clogged Fuel Pump: A rough idle can be related to fuel delivery issues. The fuel pump, which is responsible for pulling fuel from the gas tank to the fuel injectors, can become clogged or defective. If this happens the engine will not get enough fuel, which can cause a rough idle, sputtering, stalling and even slow acceleration. Clogged Fuel Filter: A clogged fuel filter can cause similar problems. The job of the fuel filter is to screen out contaminants in the fuel, over time it will become clogged and need to be replaced. A rough idle is one symptom of a clogged fuel filter. Failing Electrical Components: A problem or failure in the ignition system or various electronic components can cause a rough idle. If this is the case, the problem will usually get worse as RPMs increase. Common culprits include the ignition control module, plug wires, coils, and spark plugs. Defective Airflow Sensor: A defective airflow sensor can be responsible for a rough idle. A mass airflow sensor detects the amount of air coming into the fuel injection system and sends that information to the vehicle's computer. The computer uses that data to deliver the proper amount of fuel to the air in the vehicle. Over time these sensors can malfunction or become dirty. One of the first symptoms of a malfunctioning airflow sensor is a rough idle. The car may also accelerate slowly and even stutter or stall as the problem progresses. Dirty Oxygen Sensor: Oxygen sensors measure how rich or lean the gases are as they exit the combustion chamber. Depending on the results, the amount of fuel entering the engine is adjusted by the vehicle computer. The ultimate goal is to maintain an ideal mixture that produces the lowest emissions. A dirty or failing oxygen sensor will usually trigger the check engine light and can lead to a rough idle, lower fuel efficiency and failed emission test.

Sep 28, 2016 | AC Cars & Trucks

1 Answer

Why do I have no throttle response on my 08 Saturn aura


Your vehicle has electronic throttle control , controlled by the engine computer .Do you have any messages come up on the DIC - driver information center Reduced Engine Power
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode.
Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle positioning the throttle position, or by controlling the fuel and spark if the throttle is turned OFF.
- Ignore the accelerator pedal input. Have it check for DTC'S - diagnostic trouble codes

Feb 16, 2016 | Saturn Cars & Trucks

2 Answers

01 Cadillac overheating and having no power like it has a governor on it


The engine is swelling because of the over heating. Stop using it !!!!!!!!! Gotta fix cooling system lest you seize the engine.

Nov 11, 2015 | Cadillac Cars & Trucks

2 Answers

WHY DOESNT MY 2003 CADILLAC SEVILLE HAVE ANY POWER AND DOESNT WANT TO SHIFT EASILY


1. Verify the exhaust system is not plugged. Check for less than 1.5 PSI backpressure at 2,000 RPM in park, or open the exhaust before the converter.

2. Check the Manifold Absolute Pressure Sensor (MAP) for 4.8-5.0 volts Key On Engine Off (KOEO) and about 1 volts at idle.

3. Check actual engine vacuum at idle at 2000 RPM.

4. Unplug the Mass Air Flow (MAF) sensor, reset fuel trim to 0%, and road test. ALSO CHECK FOR FAULT CODES IN THE OBD SYSTEM.

Mar 28, 2015 | 2003 Cadillac Seville SLS

3 Answers

An orange warning light shaped like an engine has come on what does it mean


Engine warning light

eng_man_light_72.jpg Illuminates when the ignition is switched on. It should extinguish as soon as the engine starts.
If it illuminates with the engine running, it indicates a malfunction with the engine management system. Have this checked as soon as possible.
If it flashes when driving, reduce the vehicle speed immediately until the light illuminates constantly. If it continues to flash, avoid heavy acceleration and high engine speed, stop the vehicle and have it checked immediately.
On some vehicles this light may be red - again stop the vehicle and seek assistance.
If it is safe to do so, try stopping the vehicle, switching off the engine, wait two minutes, then restarting the engine to reset the engine management system.
With the light illuminated, the vehicle is still safe to drive as long as no other faults are apparent with the engine. Have the vehicle checked by a dealer or garage as soon as possible to avoid any damage being caused to the catalytic converter

Jun 09, 2011 | 2007 Isuzu MU-7

1 Answer

I have a 95 cavalier. I have had a new control module and 2 new coils installed. I have new spark plug and wires. I have a new heat sensor. My problem is. Im driving down the road and my idle is rough at...


There is a part called a throttle positin sensor which would do very much as you described it.The sensor cannot detect how much gas you are giving it nor does it know how much gas is being delivered.It is also an input for the control module which tells the rest of the system how to react.The symptoms of sudden acceleration and slowness could also be the transmission(not very likely though),but the rough idle and strange acceleration appear to be more likely the sensor.The transmission would likely have other symptoms such as rough shifting,gears winding out if you know what I mean,shifting back and forth between gears at a certain speed in which you are just at the same speed,meaning not accelerating or slowing down,say just cruising at 35 mph.Also,there are no lights because the check engine light HAS to be the worst thing ever invented for a car.It illuminates for things even when your car is running fine,but you would think for something like your situation,SOMETHING would illuminate.People have spent thousands replacing everything which the computer tells them from the check engine light diagnostic,yet it remains on.I have seen it.If you are in the USA,call any AAA approved shop and they would likely say something similar.Good luck,Greg

Mar 02, 2011 | 2004 Chevrolet Cavalier

1 Answer

Gauge light on?


Gauge light illuminates when the ignition is switched on. It should extinguish as soon as the engine starts.
If it illuminates with the engine running, it indicates a malfunction with the engine management system. Have this checked as soon as possible.
If it flashes when driving, reduce the vehicle speed immediately until the light illuminates constantly. If it continues to flash, avoid heavy acceleration and high engine speed, stop the vehicle and have it checked immediately.
On some vehicles this light may be red – again stop the vehicle and seek assistance.
If it is safe to do so, try stopping the vehicle, switching off the engine, wait two minutes, then restarting the engine to reset the engine management system.
With the light illuminated, the vehicle is still safe to drive as long as no other faults are apparent with the engine. Have the vehicle checked by a dealer or garage as soon as possible to avoid any damage being caused to the catalytic converter.

Jun 24, 2009 | 1998 Toyota Corolla

1 Answer

2003 DODGE NEON RUNS ROUGH


Try cleaning the EGR valve first



electronic Tempture Control
ECT sensor
symptoms
Potential Symptoms

Symptoms of a P0118 could include:

* Very poor fuel economy
* A no start condition
* Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
* Illumination of MIL
EGR valve

Usually a fault in the control circuit, will leave no noticeable symptoms other than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR control solenoid
is stuck open due to debris, etc. the code may be accompanied by misfire under acceleration, rough idle, or engine dying altogether.

Dec 22, 2008 | Dodge Neon Cars & Trucks

1 Answer

2005 Taurus Program Codes PO 300 and PO 316


May need to clean the egr valves because if one is stuck then the other bank would be enriched to make up the difference .In order to reset the computer when your done is unhook battery and then reconnect. But realize some radios are subject to needing a code to make them work again because of a theft sensor. Here are some a few sensors and what happens when the don't work right.

ECT sensor
symptoms
Potential Symptoms

Symptoms of a P0118 could include:

* Very poor fuel economy
* A no start condition
* Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
* Illumination of MIL

TPS sensor

Symptoms of a P0121 trouble code could include:

* Malfunction Indicator Lamp
(MIL) illumination (Check Engine Light or Service Engine Soon light)
* Intermittent stumble on acceleration or deceleration
* Blows black smoke on acceleration
* No start

EGR valve

Usually a fault in the control circuit, will leave no noticeable symptoms other than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR control solenoid
is stuck open due to debris, etc. the code may be accompanied by misfire under acceleration, rough idle, or engine dying altogether.

po171

You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.
Causes

A code P0171 may mean that one or more of the following has happened:

* The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
* There could be a vacuum leak downstream of the MAF sensor.


These are the main ones
God Bless Greg

Dec 20, 2008 | 2003 Ford Expedition

Not finding what you are looking for?
Cars & Trucks Logo

682 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70346 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6869 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...