Question about 2001 Volkswagen Golf

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P0303,p0304 cylinder 3 and 4 mistfire, Passat 1999 V6 like new

Stumble for a few seconds at cold start. I don't want to change evething, my father had the car before and went to the VW dealer for the same problem, they charge him $400 and didn't fix the problem. Please help me. 70000 Km

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  • passatsyncro May 11, 2010

    need to know what engine and transmission is in the car

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  • Volkswagen Master
  • 14,036 Answers

Replace plugs and wires.if it still misfires.you have a bad coil.and the fuel injectors 3 and 4 could be dirty and stopped up.

Posted on Jun 17, 2009

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


Error Code: P0303
Description:
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I have a 97 dodge caravan 2.4L dohc. I started with an engine code of p0303 and p0304. The vehicle has a rough idle and has difficulty accelerating from idle to 35mph. I've run several tests; 1, pulled all...


DTC P0303: Cylinder 3 Misfire Detected
Probable cause:
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My car was doing this and I had to get all new coil packs... Mine were replaced under recall at the dealership at no cost. If you take each code and google it, or even check a VW forum, I'm sure the members there can provide a lot more thorough information...... I have a 2001.5 Passat myself and when one thing goes out they all follow suit. I will help with some research for you and post back...... But I'd check the coil packs that sit atop the spark plugs.

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P0303, P0316


You have a misfire on #3 for code p0303 & misfire for code p0316

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coil packs very prone to failing... check compression for good readings (at least 100 - 120psi) if okay try new spark plug as these can fail under load and its the cheapest part to replace to eliminate. if misfire still present swap cylinder 3 coil with cylinder 1 coil and see if fault code moves to cylinder 1. hope this advice helps

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If you haven't changed the timing belt at 60,000 miles then you NEED to. The P0303 is cylinder 3 misfire. If the plugs have not been changed, time to inspect and change.
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  • Cure the misfire first and clear the codes. The misfire could be what is causing the other code.
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    well the codes
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    p0303 misfire cylinder 3
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    P1250 Fuel Level Too Low

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    P0304 Cylinder 4 Misfire Detected

    It sounds like there is a lot going on.

    Good Luck

    Brian

    Sep 14, 2008 | 1999 Audi A6

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