Question about 2003 GMC Envoy

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I am getting a ignition fault on the codes? runs

I am getting a ignition fault on the codes? runs ruff like on 5 cylinders?

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Posted on May 29, 2010

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I have a 1997 saturn sw2 that stopped runnuing changed fuel pump wont idle error code #4 cylinder is miss fireing changed ignition module car starts runs ruff changed spark plugs & wire set


You need to make sure the cylinder is getting fuel and that it doesn't have a vacuum leak at the intake that is leaning it out and causing a misfire, if that checks ok then determine if the #4 cylinder has acceptable compression as compared to the other three, all cylinders should been within 5% of the cylinder with the highest pressure on test.

Mar 03, 2017 | Saturn SW2 Cars & Trucks

1 Answer

I have a 2013 Hyundai sanatra and had a misfire on cylinder's 2&4 ran ruff and then lost all power and changed the plugs and three plug ends where like completely disintegrated like has to much spark.


not possible to have too much spark
run the fault codes to find the fault
better still as it should be still under warranty take it to a service dealer and have them read the codes and fix the fault
possible faulty injectors and running too lean

May 28, 2016 | Hyundai Cars & Trucks

1 Answer

Po 300 Po 316 Po420 Po430 2004 Ford Taurus. The car idle high or ruff when I start it in the morning but never shut off. After I got tune up it's worse it even shut off after running for a few mins


code p 0300 refers to random /multiple cylinder/s ---misfire detected ===causes spark plug/s---HT lead/s ---injector/s --ignition coil/s ---low compression---wiring
code p 0316 refers to misfire detected during start up--first 1000 revolutions ===causes --engine mechanical fault ---wiring---ignition system---fuel system--injector/s
code p 0420 refers to cat converter system, bank 1---efficiency below threshold === causes cat converter---HO2S 2
code p 430 refers to the same problem and causes as code p 0420
Here is a news flash .
engines under the control of an engine control module (ECM) do not need you to do a tune up as it tunes the engine 60 times a minute and reports to you by fault codes when it can no longer tune up the engine

Nov 04, 2015 | Ford Cars & Trucks

1 Answer

Engine light on code P0300,what does it mean?


Code 300 is for a random miss which could be ignition or fuel related.
The problem is not yet bad enough for the engine computer to pick just one cylinder.

Mar 07, 2015 | 2001 Toyota Echo

1 Answer

1995 mustang gt idle ruff and no power Barely goes above 4000 rpm installed new distributed ignition coil fuel filter plugs wires


check the ignition timing is at 10 - 12 degrees advanced . check that you have the correct firing order for the HT leads.. If it is EFI engine then run the fault codes.

Aug 16, 2014 | Cars & Trucks

1 Answer

WHY IS IT IDLEING RUFF


P0300 Dodge P0300 Dodge - Cylinder Misfire Fault Detected Random Cylinders Possible causes
- Faulty spark plug (s)
- Faulty ignition coil (s)
- Clogged or faulty fuel injector (s)
- Intake air leak
- Fuel injectors harness is open or shorted
- Fuel Injectors circuit poor electrical connection
- Ignition coils harness is open or shorted
- Ignition coils circuit poor electrical connection
- Insufficient cylinders compression
- Incorrect fuel pressure



Jun 08, 2014 | 2006 Dodge Magnum

2 Answers

Multiple misfires random misfires


Do a Cylinder Leak Down Test --to see if the valve are shot & leaking

You can also do an electronic cylinder contribution test

Then if the all seal, check the timing belt

After that check for vacuum leaks with evap smoke machine

Mar 28, 2014 | 2000 Honda Civic

1 Answer

2004 vw Passat codes; are poo36 heated oxygen senser bank 1and 2 ;temp.senser 1 high circurt high...running ruff


Hi DALE,HERE'S A LINK TO YOUR CODE AND POSSIBLE CAUSES,THE SENSOR IS BANK I,SENSOR,WHICH MEANS IT'S ON THE SIDE WITH CYLINDER I AND 2 SENSOR WHICH IS LOCATED BY CATALATIC CONVERTER,HERE'S A LINK TO YOUR FIRING ORDER.fIRST LOOK AT SENSOR AND WIRING TO SEE IF ANYTHING IS OUT OF PLACE,LOOSE WIRE OR DAMAGED SENSOR,ALWAYS USE EXACT FIT ONES,NO WIRE SPLICING.

2004 Volkswagen Passat 2.8L SFI DOHC 6cyl


The Firing Order

vokswgn14Select the part number to view the diagram.Firing order 1-4-3-6-2-5 -------- Front ' 1 2 3 'of ' ' Vehicle ' 4 5 6 ' -------- Coil ' 1 23 ' ' 6 4 5 ' -------- Distributorless ignition.HERE'S A LINK ON HOW TO TEST.HERE'S THE SENSOR.

Sep 28, 2013 | Cars & Trucks

1 Answer

All of a sudden started ruff like its loading up, and service engine light soon came on. has been running just fine


TAKE VECHICLE TO AUTO ZONE OR ANY AUTO PARTS STORES THEY WILL CODE SCAN VECHICLE FREE.AND GIVE YOU YOUR FAULT CODES.ENGINE RUNNING ROUGH COULD BE A SEVERE CYLINDER ENGINE MISFIRE.

Jul 12, 2011 | 2002 GMC Envoy

1 Answer

2003 mercedes Benz C240 codes P0300, P0301, P0302 and P0303. Please, help me how to fix?.


P0300 Random Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
according to this fault codes first mark ignition coils
3 ---------------- 6
2 ---------------- 5
1 ---------------- 4
RB-------------LB
this right banks and left bank, please remove Ignition coils with lids and spark plugs from right bank and swap with left bank, if fault code change as
P 0304 Cylinder 4 Misfire Detected
P 0305 Cylinder 5 Misfire Detected
P 0306 Cylinder 6 Misfire Detected
You can Identify it's a faulty ignition system then next swap ignition lids from ignition coils be careful each coils have two lids one short and other long bit deference and when you remove and fix it to the car keep in mind correct order because each coil two different fire for two spark plugs don't mix up, if you mix it can create the fault code.if you detect any fault ignition coils or spark plugs or lids replace that and also whether god or bad recommend to replace spark plugs, find the right that's most important thing, if this way couldn't found the any ignition fault next step is check fuel presser, when the engine running fuel presser must be around 4.5 bar without engine running must be 4 to 6 bar if the fuel presser too low need to check two different things one is fuel pump other is fuel injectors, in this case you can swap injectors from right bank to left bank and find is the injectors leaking, if not leaking faulty fuel pump.is this information helped you? if yes please leave a comment,

Oct 15, 2010 | 2007 Mercedes-Benz C230 Sedan

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