Question about 2008 Chrysler Pt Cruiser

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Hi i have a pt cruiser 08 missfire p0303 and also p0300 i pull out the spark plugs they were realy bad now the missfire stil there, when i replace the sparkplug i saw the #3 spark plug is black compare to the rest. now a re check the new spark plugs and #3 still i geting black again what do you think bad injector ?

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Check the easy stuff first.check to see it your getting spark at that cylinder.If your not getting spark then it could be a bad coil pack or ignition module.You should also check and make sure you are not still under warranty.Usually 3 yrs.36k miles bumper to bumper.This means everything front to back.Good luck.

Posted on Dec 13, 2009

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2008 Cadillac CTS returning P0303 after replacing spark plug and coil pack


Error Code: P0303
Description:
Cylinder 3 - Misfire Detected
Possible Cause:
Wiring harness, igniter and fuel injector connectors.
Ignition system. (Spark plugs gaps)
Fuel injector No. 3.
Fuel pressure.
Running out of fuel.
EVAP canister purge valve.
Evaporative emission system.
Low compression, cylinder No.3. (check valve clearance and throttle plate for excessive wear)
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P0300 and P0303 misfire codes 2004 Isuzu Rodeo 3.5L


so missfire detected and cylinder 3 missfire detected.
check to see injector pulse with "noide light" if ok injector is problem
remove fuel rail and injectors look into top of injector for blockage in screen filter in injector if blocked clean out or injector carby places can remove this screen replace it and test injectors and clean or just buy new injectors. make sure to clean out fuel rail and change fuel filter also.
if noide light flashes irratic or not at all wiring issue, check for power on one wire with ignition on 12v other is earthed by ecu when opened to inject fuel. other thing that can cause problem on cylinder is tappet clearance "shims" too tight, could do compression test to see if compression is low on cylinder or a cylinder leakage test to see if valves are leaking. broken valve spring. valves do not hit piston on these engines even if cam belt breaks, they are a "free wheeling" engine

Apr 19, 2013 | 2004 Isuzu Rodeo

1 Answer

Troubleshooting codes p0300, p0301, p0302, p0303,p0305. VSC light, VSC off light, check engine light and engine shaking.


you have multiple cylinder missfire 1,2,3,5 check your spark plugs, plug wires and coils could even be a o2 sensor

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2009 sienna setting c.e.l. light multiple missfire codes


Change...distributor cap ..spark plug wires or spark plugs

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How to fix 2002 pt cruiser rough idling


Check on intake silicon gaskets, upper and lower. About $18 at autozone

Feb 22, 2012 | 2002 Chrysler PT Cruiser

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2005 Grand Cherokee 4.7L. When started multiple misfires cyl 1,3,5,7. After running about 1 minute, misfires disappear. Code p0300, sometime accompanied by p0303


P0300 is Multiple Misfire and P0303 is one specific misfire in the cyl #3.

A code P0303 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

Possible Solutions:
* If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
* If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Hope helps.

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Not sure how many miles on your PT,but may be wire bad or not fully seated or bad lug on coil for #3 cylinder.Not sure if crankshaft position sensor would cause only one cylinder to missfire.Just remember that the timming belt needs to be replaced between 75,000 and 100,000 miles.My wife didn't know this.Well hope this helps,and good luck.

Mar 23, 2010 | 2005 Chrysler PT Cruiser

1 Answer

Code reader showes random misfire on cyl 1,3,5, have already changed the plugs


if the wrong spark plugs were used it could create a p0300 code. these cars call for ngk or nippon denso plugs. if i understand what you are telling me you have 4 related codes p0300(random missfire)p0301(cyl 1)p0303, and p0305. if this is the case then check your plugs again. if someone put in autolites to save money, throw them in the trash. they have a place, this is just not it. make sure your maintenance is up to date and the timing belt has been changed. it is recomended by hyundai at 60,000 miles.

Nov 03, 2009 | 2001 Hyundai XG300

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