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V6-3.9L

Your vehicle may be overheating. The best thing to do is seek an overheating diagnostic which will pinpoint the cause and then the necessary repairs can be implemented.

Trouble Code P0121 (https://www.yourmechanic.com/article/p0121-obd-ii-trouble-code-tps-a-circuit-range-performance-problem-by-jay-safford) can set if there are faults in the wiring or terminal connections to the throttle/accelerator position sensor. Circuity integrity should be checked and the output of the sensor should be viewed on a scan tool to...

Try to turn on and off the 4 way flasher switch several times and then leave off then try turn signals again. If they still act up then you most likely have a bad turn signal switch internally shorted.

Odds are that something inside the transmission has failed. If for instance the front pump has failed, there will be no hydraulic pressure within the transmission. Automatic transmissions rely on that hydraulic pressure to move as well as shift up...

Hello there, many common problems will cause your 2009 Buick Terraza to have a loss of engine power. The most common would be spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement), coil (https://www.yourmechanic.com/services/ignition-coil-replacement), fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement), MAF sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), vacuum leak, oxygen...

Hi Danny. This video is pretty good (https://www.youtube.com/watch?v=5ssv8mH94cs) on showing how to clean a MAP sensor.

If the throttle body is leaking vacuum on the throttle shaft then it should be replaced. If you are just getting a noise of sucking air through the throttle plates then it can be caused by carbon build up on...

When you turned on the key the IAC was energized and would push out the spring due to this. Just put spring back in and reinstall after it is cleaned.

This can be caused by the main engine computer has the IAC shorted full open or there is a short in the wiring to the IAC that holds it open. If you do not get any codes or do get...

The fuel pressure regulator and fuel filter is mounted on top of the fuel tank pump mounted in the fuel tank. It is recommended to be replaced anytime the fuel pump is replaced.

Unless your repair involved replacement or modification of engine controls, such as the IAC valve or throttle position sensor, the instant you start the truck after replacing just a, or both, head gaskets, the engine should operate normally. If the...

Hello. It is possible that your windshield wipers are not working because of the motor. However, there are other components in your windshield wiper system that could prevent the windshield wipers from working. The windshield wiper transmission, combination switch, or...

Hello. If the shifter itself is not moving then the linkage may be binding so that needs to be checked out first. Most of the time the joints in the linkage will cause this when they fail. If the transmission...

When the car is in gear, the load on the engine is sufficient to prevent the malfunction. If the engine idle speed on your vehicle is controlled by an idle control valve (ICV), that ICV valve can fail or a...

This light will usually come on when one of two things are happening. Either the motor is in fact low on oil or the oil pressure sending unit (https://www.yourmechanic.com/services/oil-pressure-sensor-replacement) is not working properly and may be producing a faulty reading....

It's possible that you could be having a sticking throttle linkage or a problem with the throttle body itself. I would recommend checking those areas for any potential problems that may exist.

A faulty or blown fuse in other electronically controlled systems can cause the IAC motor to malfunction, leading to a higher than normal engine idle speed. Other possible causes of a high idle include vacuum leaks, a malfunctioning throttle (throttle...

Danny. We appreciate you contacting us and asking questions - but this issue with your Dakota is something that we really can't "guess" at what might be normal or is wrong with your Dakota. Any responsible mechanic would insist on...

When you open the throttle the IAC will go toward the closed position and when you let off of the throttle it will open to pass air flow so the engine will not stall and then will slowly start to...

The fuel pressure regulator is part of the fuel filter and if after checking the fuel pressures you find the pressure is too high or low then it is recommended to replace the fuel filter and regulator with a new...