Skip the auto shop - Our mechanics make house calls

Q: Truck cannot start up sporadically

asked by on

My truck has sporadic startup difficulties. It would occur several times in a row over several days and then it would run fine for a longer period. It would happen again in the same way and suddenly. It always happened when the temperatures are lower. The truck would crank but couldn't be turned on right away. It takes anywhere from half an hour to several hours for it to start up. Then it would run normally. I had the battery checked and it's good. The issue couldn't be diagnosed as it happens only sporadically and when I took it to the shop, it was perfectly fine. Do you have any idea what the problem is? Thanks.

Firstly, scan the computer to diagnose any codes that may appear. The most common failures for this include the pins and wire connectors which may be loosely fitting or corroded, causing intermittent loss of sensor input to the computer. The repairs will depend on the failure and pin or socket repairs should be completed as required. If you think you need help with this, contact a certified mechanic who can diagnose your car firsthand and repair your starting issue at your own convenience.

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: Put new battery in the car and it trys to start but wont

This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the...

Q: We just putting in a brand new battery and alternator and last for the week battery now it won't hold a charge

Several issue may be causing the battery to not charge or not hold a charge. The first and easiest step is to trace the wiring circuit involved with the starting system, and visually inspect it for any physical damage. ...

Q: No spark, no fuel pump until I jump the starter switch.

The PCM is actually what commands the starter to turn over on this truck, so it is possible that this could be a computer issue. Do you have a check engine light on? If so, have you downloaded any codes?...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...