Question about Chevrolet Colorado

1 Answer

08 COLORADO , runs rough in the mornings & at times seems to be running on three cylinders , also shows code for lean conditon & low 5v reference

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 5,763 Answers

This may be due to a bad o2 sensor or a misfire, if i had the codes i could help you a little more,but the rough running could be due to a misfire, like it needs a tuneup, also check for any vacuum leaks under the hood, like broken vacumm hose.

Posted on Aug 31, 2010

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

2 codes p0300 and p0171


Random/Multiple Cylinder Misfire Detected & System Too Lean (Bank 1)

Mar 06, 2015 | 1997 Buick LeSabre

1 Answer

08' town and country shows codes p0406, p0404, p0301, p0300


egr valve is stuck open at idel exhaust gas is entering engin causing lean condition and missfire your po300 301 codes replace egr and clear codes

Feb 09, 2014 | 2005 Chrysler Town & Country

1 Answer

2004 chevy silverado 5.3L V8 runs rough and stalls


Well, code 336 is for a problem with the crank sensor, and code 171 is for fuel system too lean bank one which is the side with cylinder one. Since you have checked fuel pressure and I will assume fuel volume is good, the crank sensor or circuit could be at fault.

Jul 09, 2013 | Cars & Trucks

2 Answers

2004 dodge ram 1500 4X4 5.7 hemi - runs rough & dies at slow speeds but okay at fast speeds. diagnostic code P0157 o2 circuit low voltage bank 2 sensor 2 is shown. how to fix?


Usually the code means the O2 sensor is faulty.
But in your case it could mean there is a problem with the fuel system on bank two. Bank two is the side with cylinder two.
A low voltage reading from the sensor would mean that side is very lean if the sensor is working and the sensor in front of the catalytic converter shows the same readings.

Feb 01, 2013 | Cars & Trucks

1 Answer

1999 Chev K2500 Suburban (Old Body) 5.7 / auto started running rough at accelleration, under slight load (hills, trailer, starts). No codes or MIL light. Replaced plugs & wires (only owned truck for...


If you can determine the ignition system is ok, I would look at fuel pressure and the fuel filter. If the distributor was loose you may have to check base timing.

Dec 05, 2012 | Cars & Trucks

1 Answer

I am having ongoing problems with the truck miss firing and rough running. Timing is ok, replaced cap and rotor,coil. It still starts rough,idles rough and misses when at cruising speed,although it seems...


Misfire is a common driveability problem that may or may not be easy to diagnose, depending on the cause. A misfiring cylinder in a four-cylinder engine is, pardon the pun, hard to miss. The loss of 25% of the engine's power output is the equivalent of a horse trying to run on three legs. The engine may shake so badly at idle that it causes vibrations that can be felt in the steering wheel and throughout the vehicle. The engine also may be hard to start and may even stall at idle, depending on the accessory load (air conditioning, headlights and electric rear defroster, for example).

When misfire occurs, performance suffers along with fuel economy, emissions and idle quality. And, when a misfiring vehicle is subjected to an emissions test, it will usually fail because of the unusually high levels of hydrocarbons (HC) in the exhaust.

What causes a cylinder to misfire? Basically, it's one of three things: loss of spark; the air/fuel mixture is too far out of balance to ignite; or loss of compression. Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. Causes include worn, fouled or damaged spark plugs, bad spark plug wires or even a cracked distributor cap. A weak coil or excessive rotor gas inside a distributor would affect all cylinders, not just a single cylinder.

"Lean misfire" can occur when the air/fuel mixture is too lean (not enough gasoline in the mixture) to burn. This can be caused by a dirty, clogged or inoperative fuel injector; air leaks; or low fuel pressure because of a weak pump, restricted filter or leaky pressure regulator. Low fuel pressure would affect all cylinders rather than an individual cylinder, as would most air leaks. A leaky EGR valve can also have the same effect as an air leak.

Loss of compression means the cylinder loses most of its air/fuel mixture before it can be ignited. The most likely causes here are a leaky (burned) exhaust valve or a blown head gasket. If two adjacent cylinders are misfiring, it's likely the head gasket between them has failed. Also, if an engine is overheating or losing coolant, it's likely the head gasket is the culprit.

Intermittent misfires are the worst kind to diagnose because the misfire comes and goes depending on engine load or operating conditions. They seem to occur for no apparent reason. The engine may only misfire and run rough when cold but then smooth out as it warms up. Or, it may start and idle fine but then misfire or hesitate when it comes under load. Also, it may run fine most of the time but suddenly misfire or cut out for no apparent reason. Intermittent misfires can be a real challenge to diagnose, so let's start with a steady misfire in one cylinder before moving on to intermittent misfires.

Hope this help.

Mar 25, 2010 | 1989 GMC Sierra

1 Answer

Error codes appeared on 2003 GMC Yukon PO170 too lean bank 1 PO174 tool lean bank 2 PO300 multiple cylinder misfire Still runs OK, idles a bit rough.


Check the intake manifold gaskets for leakage. It will tend to run rougher in the morning when it is cold. Check for vacuum leaks on any hose connected to the intake plenum too.

Dec 13, 2009 | 2003 GMC Yukon

1 Answer

I have a Ford F250 Extended cab that started running rough and losing power this morning got Codes P0301 P0303 P1151 and P0171 What should i Do?


P0301 = Misfire cylinder #1P0303 = Misfire cylinder #2
P0171 = System too lean cylinder #1
Are you sure on the P1151 code? I am thinking this may be a P0151 which is O2 sensor related.
This looks like you have a fuel system related misfire. I would do a fuel injection cleaning service and then clear codes and see if the codes regenerate.

Jun 05, 2009 | 1997 Ford F250 SuperCab

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

Related Topics:

158 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8172 Answers

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

Answer questions

Manuals & User Guides

Loading...