Question about 2008 Chevrolet Silverado 1500 2WD

Open Question

The check engine code is 409 intermittent emission. Just had the injectors cleaned and it did not help. What could be the problem

Posted by on

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do I fix a check engine light intermittent misfire?


check fuel pressures, clean and test injectors, replace HT leads with quality units

Apr 20, 2015 | Cars & Trucks

1 Answer

95 taurus with re manufactured 3.0l engine from ford runs rich at idle fails emission test. no codes, new motor from ford has 750 miles since install. o2 sens have been replaced no change still no codes...


check fuel pressure/volume, injectors, engine temp sensor for computer to know what the engine temp is, map sensor, timing, throttle position sensor. what emission did it fail might help.

Feb 12, 2015 | Ford Cars & Trucks

2 Answers

Heavy idle, random misfire code 04 trailblazer


I would start with the inlet manifold gasket, these are know to break down causing vacuum leaks which can cause this issue, also check around engine for other vacuum leaks

Mar 08, 2012 | Chevrolet Cars & Trucks

1 Answer

High emisions new cat new sensor


Hi.

High emission are often consequence of engine problems. In that case the new cat converter or exhaust and new oxygen sensors will not help.

High emission from engine occurs because of many different reasons, main causes are:

Electronic injection problems:

Do an OBDII scan to find out if there are error codes. If there are no codes check injectors sensors in the air intake (MAF and IAC), check vacuum for leaks. Clean throttle body. Check EGR, IAC, PCV systems.

Engine internal problems:

Do a compression test to find problems associated with engine faults (eg.piston rings, head gasket, valves).

Also make sure that spark plug, fuel and air filter have been replaced. Make sure that there is no misfire or distribution problem.

Regards.

Ginko

Sep 20, 2011 | 1998 Ford Escort

1 Answer

What is needed for complete tune up?


  • Replace spark plugs

  • Replace rotor

  • Check distributor cap (replace if necessary)

  • Check timing (adjust if necessary)

  • Check ignition wires (replace if necessary)

  • Check ignition performance (firing voltage and ignition patterns)

  • Check idle speed (adjust if necessary)

  • Check choke (carbureted engines)

  • Clean fuel injectors

  • Check compression and/or power balance (identifies bad fuel injectors as well as compression problems)

  • Check manifold intake vacuum (reveals exhaust restrictions)

  • Check battery/charging voltage

  • Check exhaust emissions (verifies fuel mixture, ignition performance and emissions performance)

  • Check vehicle computer for trouble codes

  • Install new air filter

  • Replace fuel filter

  • Replace PCV valve

  • Check all emission controls (EGR valve, air pump, etc.)

  • Check all vital fluid levels (engine oil, transmission fluid, coolant, brakes, power steering)

  • Check belts and hoses

  • Check safety items such as lights, wipers, tires (including inflation pressure), horn, etc.

Jul 31, 2011 | 2000 Buick Park Avenue

4 Answers

5.7 hemi jeep misfires irregularly engine light flickers


changed out all the oxyegen sensors and then Jeep replaced the catalytic converter for free because of an emissions thing with the state. All is good now.

Aug 31, 2009 | 2005 Jeep Grand Cherokee

2 Answers

#1 Misses Intermittently. Engine Light On.


Check for carbon tracking on plug and wire. Looks like a pencil mark. Replace both at the same time

Apr 27, 2009 | 1997 Oldsmobile Regency

1 Answer

Check engine light comes on and car idle's and drives with a shudder around 2500 rpms. First time check engine light came on put it on computer and said it was misfiring, so changed plugs and plug wires...


I found this; if it helps.
The injectors need to be cleaned, if an engine is experiencing any of the classic symptoms of dirty injectors, such as lean misfire, rough idle, hesitation and stumbling on light acceleration, a loss of power, and higher hydrocarbon (HC) and carbon monoxide (CO) emissions.
Lean misfire may also trigger a misfire code and turn on the Check Engine light on 1996 and newer vehicles with OBD II systems. The code often will be a P0300 random misfire code, or you may find one or more misfire codes for individual cylinders, depending on which injectors are most affected.

the web page was:
http://www.aa1car.com/library/2003/ic30336.htm

Hope this helps

Apr 16, 2009 | 1999 Dodge Durango

1 Answer

I Have A 1999 Grand AM,I Have Gas In Oil,Car Runs Good,No Missing,Smoking.I Had Engine Light On And Had Auto Zone Run Check Which Gave Code PO442,Evaporative emissions control system, small leak detected


The gas in the oil thing can only be fuel injector related.I would start by useing a good fuel injector cleaner(recomend BG 44k)and see if that helps.On the emission code I would start by replaceing the gas cap.Its pretty common.

Mar 05, 2009 | 1999 Pontiac Grand Am GT

1 Answer

Service engine soon light


hi,

had a 97 grand prix and could not get the light out for any period of time, It ended up being the exhaust gas sensor saying incomplete burn due to an intermittent miss, had to change plugs, plug wires and finally injector service but the light stayed out after that, that was a 3.8 V6, hopefully that helps

J

Jul 26, 2008 | 2003 Chevrolet S-10

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

Related Topics:

81 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6924 Answers

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

Answer questions

Manuals & User Guides

Loading...