Skip the auto shop - Our mechanics make house calls

Q: 04 dodge Durango, 3.7 just changed engine,battery,and starter. Still won't crank over, getting power to solenoid,when key is turne

asked by on

04 Dodge Durango 3.7 put in new engine starter battery good connection good power to all will not crank over when key is turned

A: The most important thing to understand abou...

The most important thing to understand about electricity is it occurs on the atomic level. What appears to be a good connection to the human eye may not be to electricity. This is why we have test lights and multimeters for testing. It you have power to the solenoid, is the solenoid clicking? If it is, then that indicates the the primary circuit, the circuit from your key to the starter solenoid is working. You might want to see if a full twelve volts is available at the solenoid. I have seen many times where the solenoid is not recieving enough voltage and it won’t engage the starter.

If it is getting twelve volts, you want to make sure there is power at the battery cable where it connects to the starter, when you are attempting to crank the motor. Bad connections will become apparent when you are making them work. Such as during the action of turning the ignition key to the start position. A test light is good for this. It is fairly common for the bad connection for a starter to occur at the battery cable post to cable end. When attempting to crank the motor, there will be power at the battery post, but it will stop at the cable end. This would be a bad connection at the battery post. You can test both the positive and negative terminals this way. Perform this same test where the battery cable connects to the starter.

If these connection test good, the next thing to consider is a bad ground between the starter and the engine block. If the block is painted where the starter is mounted, this can be the culprit. Testing for this is best done by performing a voltage drop test. A voltage drop test is difficult to understand without an in person demonstration, so I won’t attempt to explain it here. But if there is paint or something else that is not metal between the starter and block, clean it off or add a large ground wire. I have had to do this every once in awhile.

If you should still need assistance with this, I recommend having an inspection for why your car isn’t starting.

Good luck!

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: Car turns over, but won't run - 2004 Honda Civic

The whining noise near the belt area along with the crank no start and sputtering is a pretty good sign the timing belt has suffered a failure. It is very common for the failure to occur at start up. The...

Q: Gauges not working in car

Hello. There could be a problem with your fuel pump float. The fuel pump float reads the gas level in your gas tank so if this is not working properly, it will cause the gas gauge to not work. The...

Q: AC makes hissing noise on a 2000 Dodge Durango

If it's actually hissing, it must have a pretty big leak. You can try adding some refrigerant and it might work. But, if it's hissing, it's not going to last long because it has a pretty big leak there. Knowing...

Related articles

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...
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...
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...