Dtc p0303 volkswagen

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Dtc p0303 volkswagen

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P is a real drivability concern and should be dealt with right away. Repairing P should be considered a high priority. The most common repair for P is changing the spark plugs. Before you can diagnose P in your van, you need to find the third cylinder. On inline engines, the third cylinder will usually be the three in from the engine accessories. Here are the most common symptoms of P in the Volkswagen Transporter. There may be no noticeable symptoms at all.

Dtc p0303 volkswagen

The P code activates whenever cylinder 3 in your engine misfires. While a single misfire may not be cause for concern, repeated misfires are a sign of a bigger problem and could lead to long-term damage. If other trouble codes are active, those can be a big help in isolating the issue. If not, there are steps you can follow to correctly diagnose the P OBD2 code. Diagnosing P can be a time-consuming process. Read on below to learn more. The exact placement of the cylinders in your engine depends on its size and style. There are major manufacturers, however—most notably Ford—that number the cylinders from front to back, making cylinder 3 the third one back on the right side.

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Smileybug 27 Replies. Log in. Diagnostics P misfire on cylinder 3. Mechanic fitted several new sensors but not fixed. Fixed the low idle but when revving hard rpm or 70mph engine management light comes on and car seems to run on 2 cylinders and lacks power. Home Forums New Beetle 1. The problem is, and don't take this the wrong way, but you are complaining about the reliability on an eight nearing nine year old car. If any revs are applied the car runs perfectly, we've become used to applying at little revs at traffic lights etc. However, as soon as the revs go to or so, the engine management light comes on, runs rough as before. Switched the ignition coils from 2 to 1, and 4 to 3, and then ran another diagnostic test. Misfires, typically come down to ignition and fuel delivery issues; so, the problem is, to try to figure out, if it is the ignition or fuel delivery. After a lengthy 8 months chasing round trying to find out what is wrong with it I've had the coils changed, an engine flush, sensors checked, compression tests, the lot!

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Sign up. I have many owners of 3 cylinder Polo, Fox, Fabia and Ibiza models with over K on them, only a very small percentage fail prematurely. I had this problem after replacing worn valves and head was skimmed. Smileybug 27 Replies. For a better experience, please enable JavaScript in your browser before proceeding. AVS Forum. Do you know many people who've written to VW about the problem? I'm trying to find someone who is skilled at fixing this to get a price so I can balance this against the amount I've been offered for the car. I have a spark at each plug tested with coil connected to spark plug and earthed. Home Forums New Beetle 1. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Swapping location of the coil packs; shown by the trouble codes, to be misfiring is a good idea. Mines done 56, Someone suggested get the ECU checked? Don't know what to do next???