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

asked by on January 17, 2017

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!

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

My oil light came on different times the last few days what could it be

The first thing to do is to check the engine oil level to see if it is low on oil. If low then top it off. If oil is full then you will need to have the oil pressure checked...

Check engine light and trouble starting.

Hi there. The P0172 trouble code indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF), oxygen sensors,...

Radio/Speedometer not working?

Hi, thanks for writing in. I'd be happy to provide my insight. This can be caused by a few things. There is a speed sensor at the transaxle that emits a signal to the computer, however if the car is...

My van won't start sometimes then will start like 2 min after. Battery and alternator both good

There may be a variety of potential reasons for this to happen. First, if the van cranks over we can rule out the starter, battery and starter relay. If it does not crank over and simply makes a "clicking" sound,...

Transmission line pressure too high for too long on a 2007 Dodge Caravan

Yes. Never buy a Dodge Caravan. They have one of the worst transmissions out there. Those things are really bad. Now, if the line pressure is too high, that generally means that somewhere in the system there is a...

P0113 error code: related to stall while in drive? caused by error when changing air filter? 2011 Dodge Durango

Hello - yes, replacing the air filter could cause the P0113 - intake air temp sensor high circuit condition. The intake air sensor is located in the plastic intake housing that leads to and contains the air filter, so it...

Stock engine swap replacement compatibility

The engines (i.e., the long block assemblies) from the two subject VIN's are 100% interchangeable. Please note though that sensors, electronics, controls and accessories on the engines would have to be separately verified OR, without verification, simply carried over from...

My wife car 2015 ford focus Hesitate when she try to start real slow

It sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns...

Stuck in second gear in limp mode.

Hi there. First check the harness to the transmission and make sure that there is power to the transmission. If there is no power, then there could be a break in the wiring from the transmission harness to the ECM...

Related articles

The Best Used Cars to Buy For a Graduation Gift
Your Your little bundle of joy has grown up and on the cusp of entering adulthood. Graduating is a milestone, and you want to reward their hard work and show how proud you are. Buying a used car is a...
Industry News for Automotive Techs: November 5 - November 11
Tesla buys Grohmann Engineering, Ferrari's future hybrids, next-gen Dodge Charger and Challenger, Nissan e-Power system, and YourMechanic recognition.
The Most and Least Expensive Cars to Insure
Car insurance quotes depend on the car make and model. The Honda Odyssey is the least expensive and the Dodge Viper is the most expensive to insure.