Q: Crankshaft pulley bolt is tight and won't come loose even with impact 2015 Dodge Dart

asked by on

Hello, trying to swap the stock crankshaft pulley on my car for a lightweight pulley. I've tried on four separate occasions to get the pulley off to no avail. Today I thought for sure I was going to get it as I had a Milwaukee 1/2" 650 ft/lbs impact and a propane torch to apply heat. But the bolt would not move at all. I tried penetrating oil as well. I have an oxy-acetylene torch but I don't know if that would be too hot and damage the crankshaft bearings. Any help would be greatly appreciated

My car has 48800 miles.
My car has an automatic transmission.

Hello - the crankshaft damper pulley bolt on many engines is installed with more than 400 ft lbs of torque. This is tough for us mere mortals to deal with. The first task is to install the correct crankshaft locking device so the engine is not rotated backwards while removing this bolt. Most often, a pin is inserted to lock the flywheel. Use a 3/4" breaker bar with a 4 ft section of pipe extending it and the correct socket. (It is easier than you think to break a 1/2" bar doing this). This may seem extreme, but will also be required when you install your new pulley as well. Caution - this bolt may NOT be re-usable as well - so be sure you have a new one on hand to install. Good luck!

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Crankshaft pulley bolt is tight and won't come loose even with impact 2015 Dodge Dart

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: Buzzing/Vibrating sound when car starts. Check engine light went on

You may be hearing the ABS motor going bad or the cooling fan motor is vibrating. You should have the check engine light checked for stored codes and it may point to the component that is making the noise so...

Q: Replace stock manifolds with aftermarket bolt on

Hello. If these headers are truly "bolt-on", a YourMechanic professional can indeed make this exhaust manifold replacement for you. If this installation requires cutting and/or welding of the exhaust system, that is not a service we can offer at this...

Q: Car idle really low, below 250 rpm.

It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate. The idle air control valve is a small valve on the engine's intake system that reads the air intake as...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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.