What should I do if there is no spark in my spark plug? Holding the loose plug by its ceramic insulator, make certain the plug’s metal base is well grounded. Then, have someone bump the ignition switch or kick starter while you observe the plug’s ground electrode. If you see a blue or yellow spark bridge the gap, then you should have adequate fire to ignite the fuel/air mixture in that cylinder. If not: How to know if your engine has no spark? First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump...

Where does terminal 87 connect to the fuel pump relay? When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the circuit. The following procedure applies to the ASD and fuel pump relays. Why is my cruise control not working properly? Could be a transmission speed sensor. An ISS and an OSS sensor failure in the transmission can cause the vehicle cruise control to shutdown and not to function properly because the transmission shaft input and output data is not being...

How do you program a key for a 2009 Chrysler 300? Keyless Remote Key Programming Procedure: Insert first programmed key into ignition and turn ignition switch to ON for 5 seconds. Do not exceed 15 seconds. 3. Insert second programmed key into ignition and turn ignition switch to ON. How long does remote start stay on Chrysler 300? Any vehicle started with the remote engine starter can idle for a total of 20 minutes. Automatic engine shutdown occurs after 10 minutes, but the vehicle may be remotely started as many times as you wish for an additional 10 minutes. What...

Will stuck thermostat cause overheating? Your vehicle's thermostat opens to allow coolant to flow through the radiator and cool the engine down. However, if the thermostat gets stuck in the closed position, the coolant can't flow through the radiator and can make your engine overheat. What causes a car to overheat on the highway? Poor airflow, blocked passages, old hoses, bad radiator caps, blown headgaskets can all cause overheating. It's important to look at when the car overheats and inspect each component involved in that failure. Why does my Car only Overheat on the Highway? The biggest cause of this...

What happens when you replace the battery in a car? Replacing the battery on some vehicles may simply be plug-and-play — just remove the old one, put in the new one, and you’re on your way. But some cars can react differently when you disconnect and then reconnect the primary source of power. Why do car batteries go flat if unused? Q1. Why do car batteries go flat if unused? A typical 12-volt battery discharges naturally at around 0.1 volts per month at 10 degrees Celsius. In warm weather, the discharge rate increases. Additionally, the car’s electrical system draws power...

Why is the radiator not working on my Chrysler 300? If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed. If your 300 is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. Why are my coolant fans not running when AC is turned on? Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon...

Is there a calibration update for the PCM? For 2017 and earlier models: Calibration updates are for PCM (ECU) only. Medium speed CAN modules (BCM and other modules) cannot be reflashed using the MMP program and J2534 device. What does PCM reflashing subscription do for Mazda? A PCM Reflashing subscription allows you to program the Powertrain Control Modules on applicable Mazda vehicles (sold in the United States and Canada) to the latest calibration level. Note: For issues with MMP/MDSFA software, use the "Contact Us" submission at the bottom of the page. Why do manufacturers need to issue service bulletins? Therefore,...