January 2, 2023June 14, 2022 by John M. The main reasons why your starter fuse keeps blowing are battery issues, a bad starter relay, a faulty ignition switch, a damaged starter solenoid, a faulty starter, wiring issues, and a malfunctioning fuel pump. Wherever the battery doesnt work effectively, it starts drawing a high amount of current, and the. When the starter fuse blows, then the current cannot reach from the battery to the starter motor. The starter motor fuse is usually big and it will not be in the fuse box. In some cases, a blown fuse may be a sign of a larger problem that requires the attention of a mechanic . However, there will be rapid clicking noise from the starter even after the engine starts. To do this, the starter motor requires a vast amount of electrical power, which is why some drivers often confuse its bad performance with a dead battery. 1). The problem might be that your car starter relay fuse is blown. This implies it is a switch between the starter solenoid and the starter motor. We discuss this problem below and provide some solutions. Many of the phases are designed so that they can detect the change in the current due to a change in engine temperature or the circuits. If it reads less than 12V when you turn on the ignition switch, it indicates a faulty relay. Use jack stands to lift the car if you have to work underneath it. In case the engine gets heated repeatedly, the fuse might keep on blowing as well. He started writing automotive articles to share his garage experience with car enthusiasts and armature mechanics. But it fails to rotate when the starter fuse blows away. Don't know if that's a statement about incompetence, or poor diagnostic information on the truck side. A Car That Fails To Start. Repair only requires cleaning the contact points to ensure proper flow or changing an old relay. The corrosion and residue will reduce the flow of electrical current within the circuit. You have to remove the blown fuse. It will cost you $50 to replace the starter relay. Often there is a fuse and relay for the car starter in the fuse box but sometimes they will have external fuse on the fuse line or close to the car battery. Connect the checker to the port and crank the engine. The booklet will help you locate the starter relay. Have an assistant help you turn the ignition key to the ON position. So, if you are having a problem with a blown starter relay fuse, the starter motor wont be able to crank the engine and give the initial spin to the flywheel. Bring it down, connect the battery and see if the starter works properly without blowing the starter fuse. Unfortunately, replacing a fuel pump can be very expensive and can cost around a thousand dollars depending on where its located in your car. It usually happens when a gear connected to the flywheel has been dislodged or badly stripped from the flywheel. 4. Step 2: Disconnect the leads that go to the relay terminals. A starter relay is a small, electrical device found in the starting circuit of high-current motors. The second cause is that there is a blown fuse or fusible link. So, how to tell if the starter relay is bad or not? However, if youre not the DIY type and not comfortable with this guide, do not hesitate to seek professional assistance. Step 2: Find the fuse box. #6. When the fuel pump malfunctions, the starter fuse can blow away. However, two problems could make it useless in your car relay malfunction or a blown fuse. It is an indicator that the fuse is damaged and will need replacement. Take it off, clean it with a dry towel, and put it back in. Step 3: Take off the mounting screws that hold the relay to the fender. If youre still wondering why my starter fuse keeps blowing, another common reason behind it is a faulty fuel pump. If this is the case, you need to replace the relay, Nothing more. Otherwise, the issue is with the starter itself. It can also be caused by a wrongly connected battery terminal. Replacing the fuse will sort out this problem since it's . And the last in our list of bad starter relay symptoms that we are going to cover is the situation when this component is stuck in a closed position. First of all, you have to have a clear idea of the place that caused the outage. In rare cases, a blown fuse could also be the culprit in the breakdown of your Q5. The engine won't . Once again, the manual will help you look at the car starter fuse. Anyway, was just wondering if anyone else has had this happen, and if anyone might know what might be the cause. The system is protected from electrical short circuits with a 90-amp fuse located on the starter solenoid and a 50-amp circuit breaker located on the wire harness bracket. Thankfully, there's a simple way to tell the two apart. As the dirt clump, itll not allow adequate flow of current, and youll hear a series of buzzing or clicking sounds from the relay. If everything works, pat yourself on the back. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'vehiclechef_com-leader-1','ezslot_7',107,'0','0'])};__ez_fad_position('div-gpt-ad-vehiclechef_com-leader-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'vehiclechef_com-leader-1','ezslot_8',107,'0','1'])};__ez_fad_position('div-gpt-ad-vehiclechef_com-leader-1-0_1');.leader-1-multi-107{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding:0;text-align:center!important}If there is any issue with the fuse, the car engine will lose part frequently. It rarely fails, but when it does, it might keep you stranded because your car wont start. Connect the battery lead and the ignition circuit lead. I'm writing this blog to share my experience. Additionally, cleaning the sensor may 6 Reasons Nissan Altima Radio Not Working (Fixed!). Ozone Generator Ruined My Car: Is It Possible? Sounds like a dodgy solenoid then, if the fuse keeps blowing on one but not the other. Get a multimeter and set it on an ohms scale. It doesnt cost much to replace the battery and you can do it yourself. Not always, but a blown fuse can prevent the car from starting. Several factors can cause your car relay to fail, and they include; Corrosion: Corroded leads or connectors cannot transfer the required amount of current. In this case, it could result in starter motor noises after the engine starts running, and the problem with fried solenoid or starter motor damage. If you have a bad starter relay or a blown fuse, the switch wont be able to transfer electric charge from the battery to the solenoid. The engine starts running when you push the start button on your car. Your Lexus won't start because of blown fuses. Some symptoms of a blown battery fuse include a no-response when you try to start your car. Its frustrating when the starter fuse keeps n blowing. 9. In a perfect world, your car's fuses would protect all of the sensitive electronics from the surge in electrical energy created by reversed battery cables. But if you are getting this range, then either the battery has drained charge, or there can be problems with the alternator. these switches can electronically or mechanically. Often there is a fuse. I checked the fuse again and it was blown. Lets look at the most common reasons why it happens: One of the most common reasons your starter fuse keeps blowing is battery issues. If your starter fuse keeps blowing, it's likely due to a problem with the starter itself. There are no bolts, screws, nor nuts too tight and nothing to worry about. My wife was out and called me reporting the engine would not start, I went to where she was and did some basic checks and determined the PCM fuse (33) had blown. You can easily diagnose a bad starter relay. When your starter relay fails or starts going bad, youll notice some warning signs to alert you to fix it on time. However, a blown fuse will also result in the same problem. Knowing the symptoms of a bad starter relay will save you from being stranded in the middle of nowhere. Finally, if the relay is stuck open, it will most likely cause the starter motor to work even after the engine cranks. That is why, whenever there is a fault in the relay, the fuse can keep on blowing. Or you can test your car battery and ensure its well-charged and not the cost of your problem. Replacing the ignition switch can cost you a few hundred dollars if you factor in the labor costs of the mechanic. Microwave fuse blown symptoms are -. Misfiring, stopping, or not starting of the engine. So if its not blowing fuses now youve probably found the issue. 1. Lessor high power could either damage the entire starter system or wont start the vehicle, accompanied by an annoying clicking sound. That takes us to how to fix faulty starter relay problems. If the readings go above 5 ohms, it shows you have a bad starter relay that needs replacement. But installing a starter solenoid is super easy, and you can do it easily at home. There can be various possible reasons for it. If the circuit is not completed, turning the key will not lead to current in the circuit, and therefore the engine wont start at all. There might be an occasional glitch or issue that could frustrate you and even prevent your radio from working effectively. So, you would find no power in the ECM when you try to start your car. Rxmechanic.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon.com. So lets see how you can see it for what it is and fix it as soon as possible. Have someone start the car and place your hand on the starter relay once youve located it. On electric dryers, the thermal fuse is often located on the blower housing or near the heating element. HDfatbagger said: Looking at the wiring diagram, the battery fuse powers the speedometer and the tssm (turn signal-security module), unless there has been another device installed. When having trouble starting the car, most drivers instantly think theres something wrong with the battery. The relay is an all or nothing device, meaning that it either sends the full electrical current or sends nothing to the starter. If theres a blown fuse, it could be due to a problem with the power supply within the relay and the starting system of the car. 1). The fuses are majorly located close to the battery sitting with the positive battery terminal connected to it. But, be careful when lending a hand yourself to the fuse box! is continuously blowing? If you find the fuel pump damaged, then its best to replace it with a new one. The malfunctioning of the ignition switch can also be why the starter fuse has blown away in your car. Signs of a Blown Car Starter Fuse. However, there are some occasions when . The starter is part of your car's electrical system and subject to blown fuses and short circuits. 3). Check all fuses in the fuse box essential for starting the engine. A blown fuse could cause the starter relay to stay stuck open, and if it results in the fried solenoid or starter motor damage, youll probably sense a wire-burning smell. Find the starter relay fuse location. Superb 7 Reasons Why And How To Fix It, 7 Reasons Why No Power To Fuel Pump Relay Chevy Truck, LED Headlight Bulb Keeps Blowing Fuse: 6 Problems & Their Fixes, Why Does My Brake Light Fuse Keep Blowing, Chevy Truck Starts But Wont Stay Running: 10 Reasons With Solutions, Car Speakers Wont Work In Cold: 7 Reasons & Solutions. By looking at the readings, youll know if the battery is okay or not. The second method of diagnosing resistance is contacting the red multimeter probe to the ignition circuit wire and the other probe to the earth wire. When that happens, the engine wont start at all. However, a blown fuse (s) can be annoying as well as signs of electrical problems. The positive and negative terminals of the battery can become corroded by accumulating a lot of dust and dirt. The starter relay fuse is located in the fuse box of your car, either under the hood or within the vehicles interior. If the starter relay fuse blows, it could result in the switch staying stuck open so the electric power supply keeps flowing even after the car starts. The engine might suffer from overheating as well. 6. With the starter motor fuse blown, the car will not be able to start. If theres no continuity, that means its damaged. It will result in starting issues. Dec 21, 2019. A damaged or blown fuse can prevent power from reaching the starter relay, which is needed to provide the spark, the ignition, and the power to move your vehicle. Faulty Fuse And if that's faulty or the fusible links are damaged, your car wont start. ignition switch is faulty: the ignition switch is the electrical switch for the engine. If he is not in the garage fixing challenging mechanical problems, he is writing automotive repair guides, buyers guides, and car and tools comparisons. If its not working, you need to replace it with a new one.