Engine will not stay running

1987 TOYOTA PICKUP

190,000 MILES • 4 CYL • 2WD • AUTOMATIC

FIRECRAKR

MEMBER
1 POST

Have replaced fuel pump, fuel filter, spark plugs, wires, thermostat, battery, distributor cap, and rotor button. The problem, I can turn it over and it will start but after idling for several minutes it begins to choke, cough, and sputter then shut off. Try restarting and all it will do is turn over. Suggestions?

Dec 6, 2021 at 10:42 PM

KASEKENNY

✓Experienced Mechanic
18,907 POSTS

We need to start with monitoring the fuel pressure to find out what the pressure is when this stall.

Then we need to run through this guide that will help with getting us down the path further with the common causes of stalling at idle.

https://www.2carpros.com/articles/stall-at-idle

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

The most common causes of these are fuel issues and vacuum leaks so we need to rule these out even though you replaced the pump already. We may still have a fuel pressure issue even though you replaced the pump.

I attached all the info below on how to check these things and let's start with this and go from there.

Thanks

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Dec 7, 2021 at 9:05 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.