Skip the auto shop - Our mechanics make house calls

Q: Car won't start off and on

asked by on

Every so often the car will not start. It won't make any noise like it's trying to crank. Replaced starter, got brand new keys, and replaced ignition starter switch. Only thing left to change is the lock cylinder and or there's a short in the wires somewhere. It's gotta be an issue such as this bc it will start sometimes and then it won't. And now when it decides it wants to start I have to jump the battery but the battery is good, trying to start it just drains it. The lock cylinder is $160 for my car, I just want to know if I should change it or if it might be something else. It is very frustrating playing trial and error bc when it was in the shop the mechanics 'couldn't' figure it out.

My car has 110000 miles.

You may have a connection issue at one or more of the control modules. The connections are very susceptible to loss of connection due to corrosion or connections coming loose. Make sure to disconnect the battery, clean the terminals, and leave it disconnected. Next, disconnect the body control module and engine control modules. Apply dielectric lube lightly to each pin and seal then reinstall the connectors making sure they seat firmly. Reconnect the battery and then see if vehicle starts.

If you need some assistance with this, consider YourMechanic, as a certified technician can come to the vehicles location to diagnose your starting issue and fix it accordingly.

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: Power steering

Hi There, It sounds like you may have air in the power steering lines or potentially may need to have the rack and pinion replaced. The power steering system operates on very high pressurized hydraulic pressure (in some cases as...

Q: Car still won't start

That sounds very frustrating. It's hard to say from here what is going on but it could be a poor connection somewhere, or that one or more of your replacement parts is defective. There are a lot of rebuilders putting...

Q: Transmission

Many different components can cause a sound on startup. Engine accessories such as the belt, idler pulley, belt tensioner, and alternator are the most common causes of a noise on startup. Without more information, I see no reason to suspect...

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...
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...
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.