2006 Volkswagen Passat: misfire or rough idle

Filed Jul 7, 2019 · Fuel system · 92,000 miles · CT

Takata recall. The past two weeks my vehicle has not started as it normally does. It takes two or three key pushes to get my engine to start upon starting my car, and then it fires up. It is difficult to get up to and maintain speeds on the highway. If and when I am maintaining speed on the highway its common for the engine to hiccup and then return back to its speed without any change in acceleration. Going up hills it lacks power and if there is more than one person in the car when going up a hill the car will misfire. On top of all of this it is practically drinking gas like water and I normally get great gas mileage. It is starting to give off a fuel smell while driving too and my mechanic does not know why.

Filed May 4, 2018 · Engine · 100,000 miles · CT

It's common knowledge that the 2006 3.6l v6 engines have a terrible flaw. The oil pump bolt installed from the vw factory was either specified incorrectly, installed wrong, or has some other fatal defect. My wife drives less than 10 miles to and from work everyday conservatively. While driving 30 MPH the engine lost power started smoking and leaking oil all over the ground. The check engine light came on. We got misfiring codes so we immediately parked and had it towed to a local vw dealer. The dealer said the loose bolt & chain rubbing was what caused an internal failure so we'd need a new engine @ $4,554.00! The car has driven perfectly and is serviced regularly but suddenly died due to no fault of my wife or myself. There's a running list of the people this has happened to @ http://www.passatworld.com/forums/volkswagen-passat-b6-discussion/327507-3-6-oil-bolt-failure-reference-material.html people have spoken up about this and I'm sure there are a many other folks that never spoke out. Vw ignores the true scope of this issue and should rectify these failures with a legitimate recall. The real issue is the bolt. It comes loose or brakes. Vw needs to recall this since it is a major factory issue. Although costly it would keep loyal vw drivers in vw's.

Filed Jun 26, 2016 · Engine, Fuel system · FL · crash

Bad ignition coils and misfires. Cam follower and camshaft wear problems. Diverter valve (dv) failure. High pressure fuel pump (hpfp). Carbon build up and cold start misfires. Intake manifold runner control (imrc) motor. Timing chain, chain adjuster and tensioner. Vw and audi fuel pump control module. Pcv valve failure.

Filed Jun 19, 2014 · Engine · 138,000 miles · OR

On the highway going over a hill apparently the oil pump bolt that holds the sprocket broke causing the car to drive with a significant loss of power and rough idle. Fortunately I was able to get it to a qualified repair shop that was able to fix it before it ruined the engine. The repair shop diagnosed the problem as completely due to a faulty oil pump bolt. They said I was lucky that the bolt managed to stay more or less in place even though it was snapped in half otherwise it would have destroyed the engine. I have supporting repair documentation.

Filed Jun 15, 2012 · Engine · 11,000 miles · NJ

It's very common knowledge that the model year 2006 and 2007 3.6 engines have a fatal flaw. The oil pump bolt as installed from the factory was either specified wrong, installed wrong, or has some other defect. The engine lost power and check engine light came on. I got misfiring codes in all cylinders. The engine in my car was replaced at 11k acording with vw records because of this same issue that resulted in an fatal engine failure. The issue is the bolt that hold the oil pump in place. It comes loose or brakes in half. Vw needs to recall this since it is a factory issue.

Filed Feb 2, 2011 · Engine, Fuel system · 80,000 miles · OH

Started vehicle in normal fashion, noticed large amount of vibration from engine compartment, check engine light came on. Upon acceleration, vehicle hesitates drastically. Took to vw service center and they ran diagnostics. 3 fault codes - po300 multiple cylinder misfire detected, po304 cylinder 4 misfire detected, p3073 throttle transfer pump electrical malfunction in circuit. Vw service center swapped ignition coils and plugs - duplicated faults. They wanted to put in new injectors, exhaust lifters, exhaust rockers and fuel pump control module for $1800.00 - and since they were already in there, they wanted to replace timing belt, tensioner, and water pump for another $340.00 I was told that if I don't mind the bad performance/hesitation then it won't hurt the engine any more then it already is. This is a 2006 vw passat 2.0t lux with 80,000 miles. Crazy that all these problem occur just after the 75,000 warranty was up.

Filed Mar 3, 2010 · Engine · 44,310 miles · GA

2.0t fsi engine with 44k miles has had multiple issues with misfires in cylinder #2, unresolved after 5 visits to dealership for warranty service. Dealer has followed vw corporate techline instructions and replaced ignition coils (twice), camshaft, fuel pump, hydraulic lifter in bad cylinder, intake breather hose, intake manifold sensor and other parts with no improvement. Car will run ok with no error codes for an average of 3 - 5 days after repair before problem recurs, and condition of engine continues to deteriorate. Due to misfires, unburned fuel is now reaching the catalytic converter (detected by sulfur smell) and likely damaging that component as well. Entire engine vibrates severely due to improper firing sequence and feels as if it wants to jump out of engine compartment. Car has 1 month left on warranty; was advised by dealer that "we want to make sure this is fixed while the car is still under warranty, so you don't have to deal with this out of pocket," but they appear either unable or unwilling to fix the root cause. Dealer has not offered to provide rental or loaner car during multiple repairs, so I have had to rely on a 15-year old vehicle as primary transportation during multiple repairs lasting 1 to 5 days. Will call vw customer care today but do not expect satisfaction, despite the reliability and safety concerns.

Filed May 13, 2008 · Engine, Fuel system · WV

My vehicle went into the shop (star motor) april 1, 2008 for an engine light indicator. I was told the fuel pump and cam shaft were bad. They were replaced and I got my car back on april 16, 2008. On may 17, the light came back on and I had to take it back to the shop. They replaced the coils (not sure what these are). On may 18, 2008, the engine light came back on and I had to take it back to the shop. They informed me that the cylinder head needed to be replaced because the compression was not good in cylinder #'s 1 and 3. They decided to flush the turbo/injector system and time the vehicle. I got the car back (not sure of the date). On may 5, 2008, the engine light came back on and I had to take it back in. When put on the computer, I was told that the light indicated and read a cam shaft/misfire 3. Months earlier, when the engine light first came on, we called in to star motor and my husband was told that "as long as the light wasn't flashing, it was okay." I told this to star motor on may 18, 2008, and gail told me that is correct. That is what they have been told at the home office. Obviously, that is not the case. As soon as the engine light started flashing, we called and set up an appointment within 3 weeks. The flashing was very intermittent (flashed maybe once or twice a day). My car is still not fixed and star motor does not appear to know what the true problem is. I was told that the volkswagen home office discussed my car in a classroom setting and they are merely able to guess what the problem is. This is a high end car; 2006 volkswagen passat, and these types of problems should not be occurring; fuel pump, cam shaft (twice), etc. Star is trying to work with us. They have even given us loaners to drive, but volkswagen is not willing to help at all. I have been doing research online and have found that these types of problems are far reaching and not simply ours.

Filed Feb 11, 2007 · Brakes, Visibility · 11,800 miles · IN

2/5 noon: as I was pulling out of my apartment complex on to a main road, my brakes went out. Fortunately, I was going 10 MPH so was able to come to a stop simply by letting off the gas and pushing the wheel against a curb. Engine began to misfire and emi came on. 12:07: in my attempt to reach vw roadside assistance, I was put on automated hold for over 25 minutes. 12:35: I called the general customer service line and at that point was told that there was a recall on my vehicle regarding vacuum hose to the brake lines but that should not have resulted in total brake failure. Re-directed me to roadside assistance again. 12:40: placed on automated hold with roadside assistance for 15+ minutes again and at that point began looking for alternative options. 1:15: received a call from third party moc roadside assistance confirming somebody was on their way to pick me up and should be there within the hour. 2:25: car was dropped off at tom wood volkswagon of indianapolis, in. I was given a rental car for the next few days. 2/9 went to get my car. They had fixed the problem and had no explanation why I didn't receive a recall letter. They said the recall had been made public 26 december 2005 and that I should check my mailing address with vag (ironic how all my financing statements come on time though!). There was a recall on the wiper system issued at the same time (also of which I was not notified). When they performed this recall at this time also, they returned the car to me w/o the wipers functioning! I was outraged that they didn't check the wiper system before telling me it was o.k. It took them a few minutes to get the wipers going and I was on my way. It wasn'tt doing any good to speak to the dealership and have begun to consult lawyers regarding actions against vag due to the fact that I was not made aware of this safety recall. Suffering: mental anguish, fear of unsafe car, lost productivity at work.

Filed Jul 25, 2006 · Engine · OR

Events leading up to the failure ;the problem that I am about to describe has on a consistent basis occurred since I purchased the vehicle. Failure and its consequences ; there are three problems. The 1st problem being that when the vehicle is running/on and I am either in park, at a stop light or similar, the engine "sputters" as if it has lower grade/bad gas or is misfiring or has an air leak of some sort. Problem 2, when I am at a complete stop/parked and the vehicle is in drive, when I let off the brake to "creep" forward (like in traffic) the car shakes/throbs/inches forward as if the brakes are clamping down on the discs and letting go really quick. It is not a problem with the brakes because if I let the car "creep" in idle up a hill without using the brakes the car still shakes/throbs. The 3rd problem is that the throttle response is delayed anywhere from 1 full second to 3 full seconds. It's simple, when I press on the gas pedal, the car does not move/the engine does not rev anywhere from 1 to 3 full seconds. At highway cruising speeds, it does the same thing. In both instances whether it be at a stop light of cruising at highway speeds, this problem has nearly gotten me killed or seriously hurt. What was done to correct the failure = I took the vehicle in to have the dealership service department see what was causing these problems so they could fix it and they didn't come up with anything.

Filed Jul 15, 2006 · Engine · 9,500 miles · AZ

Recurring engine misfire. There is a engine misfire that seems to occur mostly when it's very hot outside (arizona summers!) and significantly affects the car's ability to accelerate. I took it to the dealer who checked the fuel filter and found no problem. They reset the code and gave the car back to me. The problem is still occurring and I am scheduled to take the car in again. The dealership said they contacted vw america and vw america stated they know of no problem, but for me to bring the car in and attempt to recreate the circumstances under which the misfire occurs.

Filed Mar 30, 2006 · Engine · 1,345 miles · NY

Check engine light came on. Upon drop off to dealer it stayed for 5 business days(as of 3/30 it is still there). Multiple fault codes for misfiring in one of the cylinders. Plugs, 6 coils, fuel pump relay have been replaced. Injector cleansing being performed. Car is 5 weeks old with 1300 miles. All these fixes have amounted to nothing as the car still has the misfiring problem. Volkswagen of america is following their guidelines trying to fix an unsafe car.