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This vehicle has the popping sound at the air cleaner housing,also has a trouble code po301 (cylinder 1 miss fire). In addition when accelerated to rpms 3,000 engine begins to pulsate increasing wildly as you continue accelerate. Plugs,wires,coil pack and intake plunem 'o' rings have been replaced

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You'll need to have a compression test done, it sounds like you may have a burnt valve in cyl.#1. If the compression is good, then I'd look at checking the injector in that hole, it may be plugged.

Posted on Apr 07, 2011

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PROBLEM CODES;P0301,P0302,P0304,P0300,P1399,07-02,09-02,07-03


po301 to po304 are miss fire codes, 301 cylinder 1, 302 cylinder 2 Etc, p1399 means that this must be a Honda manufactured vehicle. All are misfire codes, Could be plugs, wires, coils. ETC, Check and you will find the problem. God-Bless!

May 23, 2015 | Cars & Trucks

1 Answer

Had a small miss at idle. I change plugs and wires now misses worse at idle and in park dont much in gear. 2000 ford limited v6


Make sure you don't have wire cross. Next it should be an OBDll have it scanned at auto parts store .a misfire code will be a po 300 code and up the last # is what cylinder you are having trouble with (po301=cylinder #1 and so on.

Oct 14, 2014 | Cars & Trucks

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Code 43


The codes you listed starting with 3 are for cylinder miss on those cylinders. Code 300 is for a random miss.
Code 462 is for a problem with the fuel level sensor circuit.
Generally speaking, trouble codes for any vehicle built after 1996 are 3 or 4 digit. So is code 43 actually P0043 ?

Feb 22, 2013 | 1998 Dodge Neon

1 Answer

Trouble codes for a 2004 mercury mountaineer


This is usually a miss fire - the 1 at the end indicates that it is on Cylinder 1. First thing to check is that your spark plugs are in good condition then ignition coils and any wiriing issues if you can swap ignition coil to another cylinder and see if the number moves - if it does then that is the issue. The next part to check is the fuel injectors if these are OK then it is likely sensors relating to air fuel mixture like the MAF or coolant sender.

Feb 02, 2013 | 2006 Mercury Mountaineer

1 Answer

This vehicle has a popping sound in the air cleaner housing,also has code po301 cyl 1 missfire,also engine rpms fluxuate after 3,000 also runns poorly in wet weather. I have replaced spark pluges but had...


Without knowing your model and year and engine, check and make sure no wires are damaged, while running unplug the alternator and see if the problem stops a short inside the alternator can cause an electrical current change causing the problems if so replace it, is the air filter dirty, if so replace it, and lastly inspect around the intake for any cracks, you can use a can of starting fluid, while its running spray around the intake and see if it idles up, if so look at where you sprayed it and see if you can see gap or broke vacuum line.

Apr 08, 2011 | Ford Freestar Cars & Trucks

1 Answer

2001 mercury sable shows two codes p0705 and p0301 are these codes linked together some how


code po705= Transmission range sensor, circuit malfunction (PRNDL input)
code po301 = is a miss fire on cylinder #1
No the codes are not linked to each other.

Feb 03, 2011 | 2001 Mercury Sable

3 Answers

CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


P0301 - Cylinder 1 Misfire Detected.

Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak

Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module

Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.

Jan 17, 2011 | 2002 Mercury Sable

2 Answers

My dodge dakota wont idle,foules up plug no.1,misfires.I have codes po172 and po301 from pmc .replaced plugs. wires.o2 sensor tps sensor,coolant sensor. I have cleaned air temp. sensor. don't know what...


check the gasket for the bottom of the intake plenum
to check remove pcv valve from the valve cover plug the vent hose from the other valve cover and the hole the pcv valve was removed from with your fingers while the engine is idleing. if it builds up a vacuum, noticable by a air rush sound when you remove finger from vent/pcv grommet hole then the gasket for the plate on the bottom of the intake plenum has blown out. it is a very common problem and results in fould plugs and oil consumption problems.

Mar 29, 2010 | 1998 Dodge Dakota

1 Answer

1996 VW Passat - Random cylinder miss fire, worse


Pop the heed, see the air box on the very left? On top of that box is the Ignition Control Unit. Little black square w/ winds about 1/2"
thick....

That is the problem. Or Your MAF sensor...
I don't know how to chech the Ignition Control Unit with out the proper tester.

But the MAF is located directly below in side the box.
If you POP off the large hose that comes out of the front of the air box. You can see the MAF, spreay it some contact cleaner for electronics not BREAK CLEANER>>>>>>.

Regards

Jun 18, 2009 | 1996 Volkswagen Passat

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