Q: won't start hot cable

asked by on

My Hummer H2 won’t start. I replaced the starter, but it still doesn't start, and the battery cable gets very hot. When I start the car it makes a crank noise or "clack clack" noise. I live in a remote part of the wilderness and there are no dealerships in the area. I’m stuck. Need help please. Thank you.

Hot electrical cables or connections indicate either excessive current flow, or excessive resistance in a connection. Test the battery first. All battery cable connections should be clean and tight. You should not be able to move cables by hand.

A couple tests are going to be needed. Test the battery again. You need a known good battery, charged to at least 75%. You need to try turning this engine with a socket and ratchet at the crankshaft to verify that it’s not seized up.

Here’s another test that you can try: turn the headlights on then attempt to crank engine while watching the lights. If the lights dim, you know the starter is pulling amps (indicating a bad battery, shorted starter, or locked-up engine). If lights do not dim, there is excessive electrical resistance in circuit and the starter is not getting the amps it needs (indicating a bad battery cable, bad solenoid or starter, or bad battery). You could also pull that starter out and bench test it with a jumper box. If you would like to have these tests conducted by a professional, a certified technician from YourMechanic can come to your car’s location to diagnose the starting issue and let you know what needs repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. won't start hot cable

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: 3.7 engine temperature gauge runs between middle to 3/4, leans a little more to 3 /4 never over is this normal

Hi there, thanks for writing in about your 2007 Hummer H3. The temperature should typically rest more towards the middle of the gauge. You should have the vehicle tested to see if the engine is running hot, or if it...

Q: Engine was swapped. I need to know how to tell if they put 1.8 or 2.0 back in?

Each of those engine sizes have unique casting numbers embossed on the head, block, etc. The casting numbers for the 1.8L are Block Cast # 5M0; In-Line Head Cast # 5M0; Cam Cast # 5M0-5M0 or 4M5-4M5; and Crankshaft...

Q: It's raining too heavy right now. Auddenly my car stopped working. What could most probably the issue? 2003 Honda Accord

Hello. THis can be caused by a number of things. It can be anything from a failure in the main relay, to a fuel pump or maybe a broken timing belt. I would usually listen to the engine and that...

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...
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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.