Skip the auto shop - Our mechanics make house calls

Q: CAR NOT STARTING

asked by on

I have a vw Sharan (1998). While driving, the engine suddenly dies and wouldn't start again until perhaps the following day. Now even though the engine cranks, it doesn't start. I have replaced the plug cables, the plugs and the coil. All the fuses have been checked and are OK. It still wouldn't start. What could probably be the problem?

This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition module are faulty, this may cause the motor to not produce the spark needed to ignite the fuel in the motor.

Fuel delivery problems may be related to low fuel pressure, faulty or dirty fuel injectors, a faulty or dirty idle air control valve (this relays information about air intake to the computer which makes fuel adjustments), or potentially a faulty fuel pressure regulator or fuel pump. Fuel delivery problems will typically not allow the proper amount of fuel to be delivered to the cylinders which results in a lean fuel condition which can cause backfiring or simply cause the motor not to start as a result of fuel starvation. I would recommend having an expert from YourMechanic come to your location to diagnose your no start problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car occasionally will not start.

Hi, thanks for writing in. A major problem that occurs when a vehicle sits for extended periods without running is the fuel inside the tank tends to go bad. As this bad gasoline circulates through the fuel pump, throttle body...

Q: my step dad bought me a car and after few months he did not pay now the car don't want to start but he payed the installments

Hello, thank you for writing in. The vehicle may not be starting for several reasons. There may be something very minor causing issues, or it may be a deeper problem. With that said we need to gather some more information....

Q: New head gaskets not over heating or dripping fluid but radiator is steaming and spraying a little fluid. What is wrong ?

Hello, thanks for writing in. The best way to determine what your issue is would be to find the source of your leak. There are a few places to check first. One of which is the top radiator hose. Holes...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...