Rick's Free Auto Repair Advice

Posts Tagged: P0304

P0301, P0302, P0303, P0304

P0301, P0302, P0303, P0304 Ford Ford has issued a service bulletin #11-10-5 to address a problem with P0301, P0302, P0303, P0304 and other trouble codes. The bulletin applies to the vehicles listed below 2010-12 Fusion, Escape, Milan, Mariner, Transit Connect and 2011-12 Lincoln MKZ The bulletin refers to the above vehicles equipped with either the 2.0L, 2.5L or 3.0L engines. These engines may cause a P1285, P1299, or P0128 code. The engine temperature may be cold but report as hot, or may be hot and report as cold. The engine … Read More

Misfires on GM vehicles

Fix codes P0300 P0301 P0304 Misfire on cylinder 1 on left turns, misfire on cylinder 4 on right turns on GM vehicles GM has issued a technical service bulletin (TSB) PIP3333A to address Misfires on GM vehicles problems with the cylinder misfires on certain cylinders. The problem can occur on cylinder #1 on left turns, and cylinder #4 on right turns. The bulletin applies to the following vehicles: 2004-2008 Chevrolet Aveo 2004-2006 Chevrolet Cavalier 2005-2008 Chevrolet Cobalt, Cobalt SS 2006-2008 Chevrolet HHR 2004-2008 Chevrolet Malibu 2007-2008 Pontiac G5 2006-2008 Pontiac … Read More

P0341 P0301 P0304 Honda CRV

Fix code P0341 P0301 P0304 Honda CRV Shops are reporting that a sticking Variable Timing Control (VTC) solenoid may be the cause of trouble codes P0341, P0301 and P0304 on 2002-2004 Honda CRV vehicles with the 2.4L engine. To check the solenoid, first remove it from the timing cover. Then apply power and ground to it to see if it moves freely. If it does, then remove the valve cover and check the timing chain to see if it might have jumped a tooth. Also, make sure the VTC gear … Read More

Diagnose misfires

Diagnose misfires If you own a vehicle with coil packs and spark plug wires and have any of these trouble codes P0300 – Random/Multiple Cylinder Misfire Detected, P0301 – Cylinder 1 Misfire Detected, P0302 – Cylinder 2 Misfire Detected, P0303 – Cylinder 3 Misfire Detected, P0304 – Cylinder 4 Misfire Detected, P0305 – Cylinder 5 Misfire Detected, P0306 – Cylinder 6 Misfire Detected, P0307 – Cylinder 7 Misfire Detected, P0308 – Cylinder 8 Misfire Detected, P0309 – Cylinder 9 Misfire Detected, P0310 – Cylinder 10 Misfire Detected, P0311 – Cylinder … Read More

Engine Runs Rough

Engine Runs Rough If you find any of these trouble codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, read this. Here’s how to diagnose engine runs rough after going through a puddle on any of these vehicles: 2008-2009 Chevrolet Colorado, TrailBlazer, 2008-2009 GMC Canyon, Envoy, 2008-2009 HUMMER H3, H3T, 2008-2009 Saab 9-7X, All Equipped With Engine RPOs LLR, LLV, LL8, here’s what to check out. The ignition coil bolts on these vehicles is vented. If you drive through puddles and water splashes onto the bolt vent holes, the water will … Read More

P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0307 P0308 P0309 P0310 P0311 P0312

Fix code P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0307 P0308 P0309 P0310 P0311 P0312 Pinpointing cylinder misfire codes People ask me about misfire codes after they’ve replaced all the spark plug wires, coil, and plugs and they still have the code. Here’s a quick explanation of how a pro would attack the problem. First, if you’re getting a P0300 Random/Multiple Cylinder Misfire Detected code, that would indicate a universal problem that applies to all cylinders. In that case, start by checking fuel supply issues like poor fuel pressure caused … Read More

Ford Ranger Misfire Codes

Fix Ford Ranger Misfire Codes  P0300, P0301, P0302, P0303, P0304, P0305, P0306, and P0316 You’re not going to be a happy camper when you’re done reading this post. Ford has issued a TSB #05-26-3 that describes a fairly significant design problem with the cylinder heads on 2004-06 Rangers with the 3.0 overhead valve “Vulcan” engine. The problem shows up as any of these misfire codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, and P0316. The TSB states that the cause may be an exhaust valve “recession” that causes a loss … Read More

Subaru misfire, Impreza, Forester, Outback, Legacy

Fix Subaru misfires P0301, P0302, P0303, P0304 Subaru misfire problems can affect 1999-06 Subaru impreza, and Forester 2.5L, and also soem 2000-06 Legacy and Outback vehicles. The Subaru misfire can be related to the ignition coil. Before jumping to replace the plugs and wires, check the ignition coil and wires for carbon tracking. Start by checking the coil towers. Look for what appears to be small cracks about 5mm long. If the coil towers look clean, check the spark plug wire boots where they connect to the coil towers. If … Read More


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