Skip the auto shop - Our mechanics make house calls

Q: Truck won't start after warming up

asked by on

My truck starts fine cold. I can go wherever I want to go but when I shut it off it will not start. It just cranks and cranks unless u hold the accelerator to the floor then it will start but runs like crap. Spits sputters and idles rough. It has a while new fuel system aside from lines including the fuel pump. It has fuel at the rail when it won't start and it has fire. It also has new ignition module,coil, and distributor, cap and rotor. I live paycheck to paycheck with a family so I don't have money to just keep throwing at it. Need help bad.

My car has 188000 miles.
My car has an automatic transmission.

A: You need to check the purge valve to see if...

You need to check the purge valve to see if it is leaking vapor into the intake when at idle and when the engine is off. If it does then it may be bad and needs to be replaced. Check if the fuel pressure does not drop indicating a leak into the engine when the key is off. This may be due to a leaking injector or fuel pressure regulator. If you need assistance with getting this fixed, consider YourMechanic, so a certified technician can diagnose your starting issue firsthand and help you fix it accordingly.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Transmission slack

This is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

Q: Suddenly cannot shift car into gear.

Hi there: There could be multiple problems on your Saturn that are causing this problem you're experiencing. If your clutch is worn it won't allow you to put your car in gear. When you step on the clutch, the transmission...

Q: Engine shut off cannot be started - 1999 Isuzu Amigo

Hello. From what you describe, it would appear that your vehicle has a few different issues that may be unrelated. The code you pulled is for an issue with the heated oxygen sensor number 2, on engine bank 2. This...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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.