Skip the auto shop - Our mechanics make house calls

Q: What could be wrong with my vehicle? It stalled on the highway.

asked by on

So I'm driving on the expressway and my vehicle just stops we replaced the battery and the alternator . the check engine light has been on for a while . a few weeks ago it was idling rough and not acting right like it didn't want to start. like it didn't want to run but then all the sudden it started acting fine again any other ideas on what it could be or what else we could check

My car has 150000 miles.
My car has an automatic transmission.

Hi, first task is to check for the problem codes that are setting the Check Engine Light. Since you have a "hard stop" failure, this become even more important.

First level isolation is to see if you have spark, or if this is a fuel issue. If you have spark, does it start briefly by spritzing a bit of starter fluid into the air cleaner when trying to start it.

If no spark, check fuse for ignition, then "walk the electrical power path" from the ignition switch to the coil, ignition module, ignition pickup in the distributor - components that would affect all cylinders at once. If it’s fuel - check fuel pump fuse, relay, and listen for the pump running when you attempt to start it.

To avoid any unnecessary repairs, I would recommend having a no start inspection completed by a mobile, professional mechanic, such as one from YourMechanic, who can come to where the truck is located to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs.

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

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: Power windows failed after seldom being opened

Hello. We will be happy to help you. The window issue you're having with your Buick Roadmaster is a well-known problem for early 1990s GM cars. GM stopped making the plastic guides and started using nylon. You can purchase them from Advanced...

Q: I can't get my 98 silverado to start

If adding fuel "directly" to the intake causes the engine to start, that could mean the fuel filter is blocked, there is a faulty pressure regulator on the fuel rail, the injector(s) are not functioning electrically and/or are plugged, the...

Q: Getting P0107 on OBD-II, mostly when car is in reverse gear and the Check Engine Light switches on.

Hi and thanks for contacting YourMechanic. Check the manifold absolute pressure (MAP) sensor for any corrosion or burned pins. This is what the P0107 code is coming up for. Check for power to the sensor. Back probe the wires and...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.