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Vacuum diagram for 3.4ltr

P0300 code

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Code po3000 is for a miss fire, that car just 1 ignition control module and three coils. the code is not saying what cylinder ,so you have a bad ignition control module . I am a self employed mechanic

Posted on Nov 09, 2012

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Posted on Jan 02, 2017

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97 chevy 1500 sputters at idle in gear can feel it a little while driving no cat. past 2 years run bank1 lean code plugs clean HELP


If the engine is misfiring the check engine light would be on and blinking and the engine control module (PCM) would store a fault code or codes for the cylinders that are misfiring. A lean code will not cause a misfire unless the engine has a vacuum leak most often at the intake manifold gaskets. A misfire code looks like this:

P0300-P0306 for 6 cylinder and P0300-P0308 for a V8.
P0300 indicated a random engine misfire, this can be caused by all kinds of issues.

Feb 24, 2017 | Cars & Trucks

1 Answer

2004 sebring 2.7 has engine code p0300. Meaning? Possible fixes


P0300 - random misfire ! A vacuum leak , low fuel pressure , ignition system problem are a few thing's that mite cause this problem . Videos on you tube on finding this type problem ! Autolite Challenge Series P0300 Engine Misfire Diagnosis

Sep 22, 2016 | 2004 Chrysler Sebring

1 Answer

2005 saturn ion 3 trouble code P0300


A P0300 code indicates random, multiple misfires were detected. You eliminated the possibility of ignition system faults by replacing the ignition module, the coils, and the spark plugs (unless the replacement part(s) were no good). However you did not mention the ignition wires which are another probable cause. In addition, there could be vacuum leaks due to damaged hoses or improper routing. Consider also fuel contamination or a problem with the fuel system.

Dec 24, 2013 | Cars & Trucks

1 Answer

I have a 97 chevy tahoe 5.7 i just did a intake gasket due to the one given out truck ran fine befor i took it a part but now it runs and throws the p0300 code has a slight rough idle


P0300 random misfire, slight rough idle good , by the way your repair is good you dont want a identified misfire, Lets start by what it is not. Not a misposition sparkplug wire you would of gotten that cylinder code, as misfire, Oh try this got carburator cleaner? spray safely along the intake gasket, How about inspecting the vacuum hoses especailly at the map sensor. Here the thing you got. a vacuun leak. on a 5.7 a vacuum leak causes random misfire, by definition P0300 means 2 cylinders or more. By experience its a vacuum leak

Apr 25, 2011 | 1997 Chevrolet Tahoe

1 Answer

I have a 2002 GMC Sierra 1500. 4.3 liter engine. I brought it to autozone and they put the gauge on it and got two codes P0140 and P0300. I had my distributor cap replaced, ignition rotor, plugs ,wires,...


Clean mass air flow sensor with a nonchlronated brake cleaner,install new air filter and check all vacuum lines for leaks then check for vacuum leak around or at intake manifold.Code P0140 is for mass air flow sensor code P0300 is a multiple misfire which more than likely is a vacuum leak possibly intake manifold gaskets leaking.

Apr 11, 2011 | 2002 GMC Sierra 1500

2 Answers

P0300 diagnostic code for a chryles sebring lxi coupe 3.0l v6


Hi.

P0300 is random misfire, and can be caused by a number of problem. First check if there are more codes stored in the PCM.

If you have only P0300, check spark plugs, distributor (depending on year distribution coils) and high voltage wires from distributor to spark plugs. Those are the most common cause for random misfire.

If distribution is OK, check for ignition problems. A too rich or too lean mixture can result in misfire. Often the problem is not reported by the PCM with a lean or rich code based on the O2 sensors' input.
Check fuel system, injectors, filter and sensors in air intake and air intake itself, vacuum system etc.

Check with particular attention the EGR system, that is a common fault resulting in random misfire. Chrysler Sebring built in the second half of the 90s are commonly suffering from EGR problems (there are several Chrysler service bulletins on this).

P0300 is often accompanied by symptoms such as engine running rough or shutting down. There are more faults, apart the ones listed that can result in P0300.

Regards.

Ginko.

Mar 10, 2011 | Chrysler Sebring Cars & Trucks

1 Answer

02 sensor p0136 and cylinder misfire p0300


Most likely you do not have bad O2 sensor or coil sience you have P0300 code.
Check for vacuum leaks first , this is very common problem(vacuum leak) , lean mixture will cause misfire. I'm tallking about V6 engine , 4cyl have same problems but for misfire it may have bad coil (they under recall now).
Also check condition of air mass sensor , if it's dirty ,
buy air flow sensor cleaner and clean it according to user manual on the can.(air mass sensor can cause
O2 sensor code)
Check vacuum hose to fuel pressure regulator.
There are many more things to check , but that for mechanic shops after you try this.

Jun 10, 2010 | 2001 Audi A4

1 Answer

P0300 diagnostic code


random misfires can be attributed to lean fuel mixture caused by vacuum laeks, egr stuck open. check the link.

http://www.random-misfire.com/

Mar 17, 2010 | 2004 Pontiac Grand Am

3 Answers

Where is the purge solenoid location on a 1996 Chevrolet silverado 1500 ???? trucks runs bad and I was told it was that or some other vacuum leak also I have code p0300 and p1441 if anyone can help...


A P0300 DTC is a misfire code. The P1441 is a no flow during purge code which has to do with the purge solenoid. With the misfire code present I would say you have a vacuum leak on one of the hoses. The purge solenoid is located in the passenger side, rear of the intake manifold.

May 09, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

Chevy impala2002


A P0300 code is a random cylinder misfire code and could be caused by a bad plug, plug wire, or fuel injector. The P0171 is bank one o2 sensor is reading lean w/ both of these combined could mean a vacumm leak.. Hope this helps.

Nov 26, 2008 | 2003 Chevrolet Impala

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