Rick's Free Auto Repair Advice

Posts Tagged: P0302

Honda service bulletin 09-050

Diagnose and fix Honda P0339, P0302, P0303 Honda has issued a technical service bulletin 09-050 to address Honda P0339, P0302, P0303 misfire codes on the vehicles listed below. The bulletin requires a software update that can only be performed by a scan tool equipped with reprogramming capabilities. This reprogramming can be performed by a Honda dealer or an independent shop that does reprogramming. Honda vehicles covered by the Honda service bulletin 09-050 2008 Honda Accord — all engines 2009 Accord 4-door L4 engine – From VIN 1HGCP2…9A000001 thru 1HGCP2…9A114315 and … Read More

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

Diagnose misfires

Diagnose misfires If you own a vehicle with coil packs and spark plug wires or a coil-in-plug setup, you may see these misfire codes. This post will help you diagnose misfires. Diagnose misfires — is it the spark plug or the ignition coil? Whether your engine is equipped with coil packs and spark plug wires or coil-on-plugs, always diagnose misfires by checking the spark plugs. Why? Because a worn or damaged plug can degrade your spark plug wires and even damage the ignition coil. If you replace the wires or … 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

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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