Question about 1999 Chevrolet C2500

1 Answer

2002 hd 2500 engine light flashes and truck misfires all the time

Posted by on

  • Douglas Hansen
    Douglas Hansen May 11, 2010

    I'm not 100% sure, but I think your truck has coil packs? It sounds like a spark miss. If you can, while running, unplug a coil wire harness connector one at a time until you notice "no" change in idle. That one is the problem cylinder. You can also do this with plug wires, but use an insulated tool.

×

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 141 Answers

Flashing chech engine light means misfire...go get it scanned to narrow it down...free at most parts stores these days...could be bad plug,bad coil pack,bad plug wire(if equipped) or even a bad injector...good luck...Lee

Posted on Jul 30, 2009

Ad

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2002 Buick lesabre check engine light flashing and runs rough help


You have a misfire ,spark plug ,coil etc. .. the flashing check engine light is to warn you that the misfire is severe enough to damage the catalytic converter ! You need to take it to a repair right away ! A new catalytic converter can cost as much as $1,000 . The shop will check the code's in the PCM . this will tell them what cylinder is misfiring !

Apr 22, 2015 | 2002 Buick LeSabre

1 Answer

Check engine light flashing and shakiness in car accompanied with burning smell.


The check engine light flashing is a pretty much universal sign that you have a misfire that is bad enough that a lot of raw, unburned fuel is being dumped in to the Catalytic Converter, to the point that it could be ruined if the problem is not taken care of very quickly.

Feb 24, 2014 | 2002 Ford Ranger

1 Answer

CHUGGING ALONG WITH FLASHING CHECK ENGINE LIGHT....???? 2002 FORD WINDSTAR WHERE TO BEGIN


A flashing Check Engine light means you have a ignition Misfire, start by replacing the spark plugs and spark plug wires, one or more is defective. If you have a electronic engine control fault code reader the cylinder or cylinders that are misfiring will set a fault code, the codes are P0300-P0306, the last number being the number of the cylinder ( cylinders 1-6) the computer has detected a misfire in.

Apr 18, 2011 | 2002 Ford Windstar Cargo

2 Answers

My 2003 Chevy Silverado 2500 4x4 check engine light flashes randomly and different number of flashes each time like some sort of code is this posible?


It is misfiring. It likely needs a tune up. Have it scanned. This will tell you which cylinder is misfiring. Recommend replacing the plugs and wires

Feb 28, 2011 | Chevrolet 2500 Cars & Trucks

1 Answer

Engine Light began flashing and engine is very rough between 2500 - 3000 rpm.


this is caused by a engine ignition misfire most often, have the fault code tested to see which cylinder is having the problem, the most common cause is a defective plug wire or spark plug but there are many other reasons like a bad fuel injector, low engine cylinder compression and about 6 other poss causes

May 26, 2010 | 2002 Volkswagen Jetta TDI

1 Answer

What does it mean when my 2002 f150 service light


a Flashing CEL light usually means a mis fire, if the flashing s in groups ( ie of 5 ) it is indicating the cylinder number. If you have a straight series of flashes, it is a general misfire code ( P0300 ).

Go to an autozone and have the codes pulled, get the actual code number, not what the guy thinks should be replaced, and post a comment back to your problem.

Mar 13, 2010 | 2002 Ford F150 Regular Cab

1 Answer

I have a 2002 mercury cougar and my check engine light comes on after a hard rain and usually goes off after a day or two. Sometimes it flashes which according to the manual means that it is...


thats when you need to get it scanned sounds like water is getting in a sencer o2 perhapes but scan it for the code it should be stored in the memory

Sep 01, 2009 | 2002 Mercury Cougar

2 Answers

I have a 2002 Ford Explorer V6. Last night I


I somewhat agree with other solutions on this page. I agree that what you are describing is a severe misfire, however there are MANY possible causes for a severe misfire other than just the spark plugs...I recommend diagnosing the CAUSE of the misfire before spending any money "GUESSING" and replacing a bunch of parts.

Also, a code P0300 is a "RANDOM MISFIRE" code which indicates that there is definately more than one cylinder misfiring. Your computer MAY display this code, however, a SINGLE cylinder misfire can also cause a loss of power and the check engine light to flash.
You may just have something like a bad coil on one cylinder that needs to be replaced. This is why PROPER diagnosis is recommended.

Jun 30, 2009 | 2002 Ford Explorer

1 Answer

2002 Hyundia Elantra Service engine soon light.


When the check engine light flashes, It's not giving out codes. It is telling you that the engine is misfiring on 1 or more cylinders. New plugs and wires might fix your problem.

Apr 12, 2009 | Hyundai Motor 2002 Elantra

1 Answer

Cold rough idle and engine light flashed


Spark plugs/wires might need to be replaced. Check your spark plug gaps and check your spark plug module harness connection on both sides of the engine. The check engine blinking indicates short/misfiring. If there is short in the harness, you can check it by moving around the wires close to connector one by one while the engine is running. You might need to remove and ckean the Throttle Body.

Dec 02, 2008 | 1999 Chevrolet C2500

Not finding what you are looking for?
1999 Chevrolet C2500 Logo

Related Topics:

99 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

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

Answer questions

Manuals & User Guides

Loading...