Vehicle Starts Then Stalls? Here's Why

---

If your car fires up but shuts off a few seconds later, it’s often a sign of:

• A theft deterrent system not authorizing continued operation 
• Loss of power or ground to a critical control module 
• Fuel pump prime without follow-up command 
• CAN or LIN communication faults between modules

Some vehicles start, stumble, and immediately shut off— especially after parts replacement, dead battery events, or auto start car and cars with keyless ignition issues.

At Keeney Auto & Diesel, these symptoms are approached with precision: 

• Scanner access to security data
• Scope verification of fuel delivery
• Evaluation of airflow
• Ignition behavior from startup onward

Whether it’s anti-theft, fuel pressure drop-off, sensor faults, idle air control issues, or auto start engine faults, here the failure mode is replicated, traced, and proven.  No unnecessary part swaps. Just the right diagnostics, done right.

Having trouble keeping it running after a start?  That’s where real testing finds what others miss.