Q: engine dies after warming up

asked by on October 05, 2016

I changed the fuel pump think ing that's the problem. The vehicle stalls out after driving it for around 20 min. It will crank but won't start until it cools off totally. Could this be an airflow sensonr problem or distributor cap and wires

My car has 300000 miles.
My car has an automatic transmission.

There are several components that can cause this problem. You are correct in thinking one could be the ignition system. Heat from the environment or the engine will cause the coils to expand, and not allow for the connection to be made. Most sensor issues can be detected by the ECU, and if you are able to run a scan for codes, a sensor may have tripped one. Unfortunately, you are looking at a process of elimination to diagnose this. If the issue is more complicated than the simple fixes you already considered, look next to the possibility of extra fuel getting into the system. If the vehicle is running rich, once the vehicle warms up it is less likely to properly burn the extra fuel. Its more like one of the other options we discussed, but a true diagnosis will need to be made after further testing.

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

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

i have an 1997 dodge intrepid. it is overheating, gurgling and smokingbfrom radiator with coolant coming out. what can be the prob

Hello, thank you for writing in. There are several reasons a vehicle will overheat. The first thing to check is the level of your coolant. If it is full, then the water pump or thermostat is likely restricting the flow...

Dead battery then all warning lights on

You should first have the battery and cables checked for bad battery and corroded connections and if all okay then disconnect battery and then reconnect after making sure you have the radio code to turn it back on. Then see...

I unplugged mass air flow sensor

When you unplugged the part while the engine was running, the Electronic Control Unit (ECU) saw it as a component failure and lit up the check engine light. There will now be a code stored for the air mass meter....

Related articles

The Most and Least Expensive Cars to Insure
Car insurance quotes depend on the car make and model. The Honda Odyssey is the least expensive and the Dodge Viper is the most expensive to insure.
What Causes a Car to Stall?
You trust your car. You may not think about it, but you believe that certain functions will occur without fail. You may be aware...
How Can I Keep My Fuel System Clean?
Proper Proper maintenance of the fuel system is crucial for consistent long-term performance of a vehicle. The most easily clogged parts of the fuel system are the fuel injectors themselves. There are a number of ways this can happen: ...