Q: Limp Mode

I would return to where you had the radiator installed so they can check the radiator for leaks (https://www.yourmechanic.com/services/coolant-is-leaking-inspection). It is possible that a hose clamp may have been left a little loose or something minor like that. It happens...

It could be a fuel pump, or a fuel pump relay issue. The fuel pumps are problematic on these Ram Diesels, and will quit with no warning. There are many aftermarket pumps that are more durable than the stock Dodge...

Have an experienced automotive technician, such as one from YourMechanic, inspect all of the vehicles fluids and note the condition. Your brake fluid must be flushed (https://www.yourmechanic.com/services/brake-system-flush). The transmission must be drained and refilled (https://www.yourmechanic.com/services/transmission-fluid-service) with fresh fluid. Do not...

Hey there. There is a safety limit switch that is built into the motor. You may have to check the window track or inside the door for something blocking the window regulator from going all the way down. You may...

As you know, your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU....

Hi there. When looking for an ECM (computer) for your vehicle, as long as the computer is the same design and has the same harness connections it will adapt to your vehicle. The only thing is, you will have to...

Hi there. Sometimes a dragging emergency brake or warped front brake rotors can cause the symptoms you're describing. In worse case scenario, there may be internal damage inside the transmission or the torque converter of your Optima. I would recommend...

Hi there - based on the symptoms you describe, I suspect that either the throttle position sensor or the fuel pump (or fuel pump relay) (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-pump-relay) are failing. The result is either incorrect throttle position reported to the engine computer,...

Hi there. If the security light is flashing when trying to start the vehicle then most of the time this is the result of a failure in the key recognition circuit. It is either the receiver not picking up the...