Skip the auto shop - Our mechanics make house calls

Q: Cranks but won't start

asked by on

Truck just shut off no warning no nothing im told it could be auto shut down relay how do I confirm that I tried using a decoder but being told the vehicle must start also need to know if I should just buy the computer or try eliminating the sensors.

My car has 180000 miles.
My car has an automatic transmission.

A: This may happen for many reasons. There are...

This may happen for many reasons. There are in fact modes in your truck's computer that will trigger the ECU to shut the engine down in the event of some kind of failure that may cause major damage. This is a fail safe measure that is taken by the ECU when it detects critical components that may be not functioning properly or something that could jeopardize the safety of passengers or the engine.

Without power to the ECU itself, it my be difficult to use a scanner, however this can be bypassed, but does take a bit of skill. I would suggest having an expert from YourMechanic come to your home to diagnose your no power issue.

Was this answer helpful?

A: Hello, thanks for writing in about your Dod...

Hello, thanks for writing in about your Dodge Ram 1500. I'm curious if your Check Engine light on. Checking the basics will help here: will it crank but not start? If so, is there spark at the plugs and does spritzing some starter fluid result in a brief engine start? Check fuel pump and ignition fuses and relays - a hard shut-down was a clear failure of some kind.

If you need help with this issue, I would recommend having your no start condition inspected by a certified technician, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs. YourMechanic can dispatch a mobile, professional mechanic to your location for this repair.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: 2004 CHEVROLET TAHOE starting issue

When you disconnected the battery to replace the starter you either did not reconnect a power cable at the starter that powers the ignition system, or the anti-theft system has been activated and needs to be deactivated to start the...

Q: I have a 2003 Saturn L200 2.2L Manual Drive and the heater or AC will not work no air blowing.

Hi there. From the description you have provided, it would appear, you have covered the bases concerning your vehicle's inoperative blower motor. However, I am lead to believe the problem is still, no power supplied to the blower motor connector....

Q: crankshaft position error code p0336

This code is related to the crank position sensor. Since you just had it replaced, it may be possible that the mechanic forgot to clear the code in the car's computer. I would suggest taking it back to them to...

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.