Skip the auto shop - Our mechanics make house calls

Q: starts at the starter but not with the key

asked by on

I started my truck there was a loud grinding noise I drove it up the street and it wouldn't start again somebody told me it was the starter I replace the starter and the relay switch and it still won't start. but when I get under the truck and started at the starter it starts up but not from the key please help me.

My car has 150000 miles.

A: Check to see if fuse number 21 in the passe...

Check to see if fuse number 21 in the passenger compartment (15 amp) has power when you turn the key to start the vehicle. The fuse should get power from the ignition switch and be good and not blown. If it has no power, then check and replace the ignition switch. Sometimes the key cylinder outside part comes loose and does not turn the ignition far enough, and the lock cylinder fixes the problem.

If you are getting power to and from the fuse, then check for power to and out of the transmission selector switch on the transmission. Should be a dark blue with orange stripe wire going in from ignition switch and tan with red stripe wire. If you turn the ignition to start, see if power goes in and out of the switch. A certified technician from YourMechanic can help you scope out this issue further to diagnose this starting issue and verify what components need 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

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・Save up to 30%

Get a quote

What others are asking

Q: What does the Low Tire Pressure Light on the dash mean?

The Low Tire Pressure Light in the dash of your car comes on when the tire pressure monitoring system detects a tire low on air. However, it can also come on for other reasons as well. Here’s what you should...

Q: VATS security issue

Hi there. From the description you have provided, the VATS (vehicle anti-theft system) in your vehicle can be repaired. I have in the past, bypassed the system by tricking the security module. Unfortunately, if the battery goes dead or is...

Q: Idle air valve calibration/adjustment

Hi there. It is suggested to have a bidirectional scan tool but it is not required. Verify the idle speed is within 650-750 rpm. You want to be at 700 rpm ideally. Connect data link connector terminals TEN & GND...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
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...