Car suddenly started shaking and the malfunction indicator lamp was flashing on the dash. Car cannot go above 40 mph without shaking badly. please help!
When the light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. These DTCs remain even if the light goes out. To address a Check Engine Light problem, the DTCs are retrieved and the appropriate troubleshooting information is followed in order to determine the problem.
The four most common Check Engine Light scenarios and what to do:
* The Check Engine Light turns on and off or flickers.
If the Check Engine Light comes on in the city but goes off on the freeway, then the fault is present during city driving conditions. Pay attention to whether or not the vehicle runs or drives any differently when the Check Engine Light illuminates. If vehicle performance does change, drive the car as little as possible and take it to be checked by a service professional as soon as possible. If there is no change in vehicle performance, you can drive home, but have it inspected as soon as possible. In this condition, you run a risk of the vehicle dying or not starting.
* The Check Engine Light comes on and stays on.
If the Check Engine Light illuminates constantly during driving with no noticeable driving or performance problems, there is a permanent fault in the emission control system. When this happens, the computer that controls the emission system usually has a backup program that runs while the fault is present. (These backup programs are often referred to as "limp home" mode programs.) You should get the vehicle serviced as soon as possible, but in most cases, the vehicle will continue to operate, though you run a risk of it dying or not starting.
* The Check Engine Light illuminates, stays on, and there are performance problems.
This means that a vital component of your emission control and engine management system has a serious problem. It usually involves a component or system needed for the vehicle to run at all. In most cases, drive the vehicle as little as possible. In many cases, the vehicle is not safe to drive at all -it could stop or stall out at any moment. It is best to pull over to a safe place and have the vehicle towed to an automotive diagnostician for a thorough inspection and repair.
* The Check Engine Light light comes on and blinks in a steady pattern while driving.
Don't confuse this steady pulsing of the Check Engine Light light (usually one or more flashes per second) with a flicker (see above). The Check Engine Light may stay on steadily or it may flash when the vehicle is accelerated. This is very serious. There is a severe failure of the emission control system that is causing the engine to misfire to the point that the catalytic converter is damaged each time the Check Engine Light flashes. It may mean that the catalytic converter is overheating to the point that it will glow red or, in extreme cases, start a fire on the underside of the vehicle. Immediately pull over to a safe place and have your vehicle towed to an automotive diagnostician for repair. Vehicles can be severely damaged and even destroyed by fire if this condition is ignored for too long.
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SOURCE: 2000 VW Beetle will not start in cold, runs fine above 40 degrees
I was just reading the owners manual for my 2000 beetle and it says the diesel fuel has a problem with the wax separating from it below 40 degrees. Put the car in a warm garage and it will start.
SOURCE: 1999 New Beetle. PLEASE HELP! SHAKES REALLY BAD!
A shake with the engine running (known in the vernacular as a "shimmy") can be caused by several things. In this case, since it's at idle, I'd wager either a.) timing went off, which in an EC (electronic control) vehicle means you should be asking "why me?" or b.) could be a miss. Chances are, whatever the problem, that check engine code that got tripped will tell you what happened. It might be a simple thing like a sensor malfunctioned and now is telling the engine to fire wrong, dwell wrong, too much gas...etc, or it might be something went seriously wrong (broken engine mount, bad distributor...etc). Either way, get that code read and you should be able to get back on the road.
SOURCE: 94 vw jetta would not start
I just experienced the same problem and it turns out its the timing belt. I've never heard of this before, but when I pulled the cover off the belt was broken. Not sure if any other problems exist (still need to make the repair), but thought I'd share.
SOURCE: Malfunction Indicator Lamp (MIL)
I had the samething happen to my Jetta. I took it to the dealer and nothing was wrong.
I would think it's safe to drive until Monday when the VW shop opens.
My 2 cents
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