Q: Car starts and runs but dies after 4-10 minutes, will not restart...leave overnight, same all over again.

asked by on

Bought car from a guy after fuel pump quit...installed two NEW fuel pumps....have good flow at the fuel distributor...new battery, new spark plugs...started and ran great...but dies and will not restart....Twice had to tow it home after a short drive....read 8 pin codes, nothig except SRS and AC...nothing that would affect running. Mechanic says fuel air mixture..or electrical....I am thinking idle control valve or O2 sensor....will invest some money if you really know MBZ and can give some suggestions....or it has to be towed to the shop...and checked out....which will maybe cost a couple hundred.....plus repairs!...So.....thanks!

My car has 225 miles.
My car has an automatic transmission.

Your car uses the old Bosch KE injection system. It is a mechanical, electronic combination system that has the unique ability to run (though not very well) with the electronics not working at all, You might find that the section of the fuel pump relay that powers up the ECU is dead. Another common failure on the old Benz is the ignition module, it’s a small part, but it’s pretty expensive so you’ll want to do some proper diagnostic work before buying anything. If this sounds like it’s getting too complicated You can have a technician come out to your home or office to check out your Mercedes and let you know what the problem is and what you can do about it.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car starts and runs but dies after 4-10 minutes, will not restart...leave overnight, same all over again.

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: My pickup cranks but don't start and there's no power to the crank fuse

Hello. You will only get power to the crank fuse when you have the ignition switch in the crank position. You need to check to see if you are getting spark from the coil. If not, then you most likely...

Q: Hesitation before engine starts up.

Hello, do you mean a lag "while" the starter turns the motor over, before it actually starts? Or a lag between turning the key to '"start" and when the starter kicks off? A lag while the starter is turning, but...

Q: Car hard to start and hesitates

Thanks for asking. With all of the work that has been done to the vehicle, I would recommend having a mechanic, such as one of our YourMechanic experts, inspect your starting issue. Your symptoms sound like an air/fuel metering concern...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...