Q: My 2003 Toyota Sequoia starts then dies and does this a couple of times until it stays running. It only does this when it's cold.

asked by on

when its 40 deg or colder my Toyota will start then dies it does this several time then will stay running. I changed the fuel filter, mass air flow sensor. took it to the shop and they had it for about 3 days and said they couldn't find anything wrong.

My car has 213000 miles.
My car has an automatic transmission.

Although it is a little cumbersome, you could try to rule in or out a fault in the fuel delivery system by having an assistant quickly introduce "starter fluid" into the intake right at the point (very quickly, of course) that the engine starts to cut out. Of course, you will do this experiment on a cold day. If the introduction of starter fluid keeps the engine running, during these stumbles, that would point toward a fuel delivery issue although the delivery problem could itself be the result of a faulty engine temperature sensor.

A faulty temperature sensor will mis-report to the PCM and not enrich the mixture at cold start-up thus causing the engine to immediately stumble. It is also possible that the relay that drives the fuel pump is cutting out during initial start-up. There are other obvious possibilities include the idle air control valve.

A certified professional, like one from YourMechanic, could perform an appropriate engine management diagnostic and get this resolved for you. By the way, to make your life easier, and assist you toward resolving this, the shop should have given you a detailed list of each and every component, system, or possibility that they already tested, so that you don’t have to re-invent the wheel.

I’m sorry to say that if they simply told you "they couldn’t find anything," and at the same time did not give you a reasonable level of diagnostic detail, they probably did essentially nothing to help you. Put another way, the symptom you are reporting is not of space shuttle complexity and thus it should have been fully resolved during your first visit.

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. My 2003 Toyota Sequoia starts then dies and does this a couple of times until it stays running. It only does this when it's cold.

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: Noise when i turn heater on for while to defrost or vents. 2003 Chevy Impala

Hi there, thanks for writing in about your 2003 Chevrolet Impala. The noise you may be hearing is the blend door actuator clicking until the door gets into the position it needs to be in. When these actuators go bad...

Q: Very hard staring after engine cools off

This may be a result of a cold start fuel supply issue. When you start your car when it is cold and turn the key to on, the coolant temperature sensor immediately reads the temperature of the coolant and relays...

Q: Car will not start when the engine is hot.

Hi there. If there is fuel and the engine will not start up when it is at operating temperature, then either the crankshaft position sensor is getting hot and not making a connection or the coolant temperature sensor is malfunctioning...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.