Q: Can't get an emissions test due to faulty plug
I have no power to the PCM or DLC to get an emissions test; the plug has no power. I checked the fuse and it is blown, but I can't get close with another fuse before it sparks. The cigarette lighter and DLC are on the same fuse, but I can't get the cigarette lighter out to replace it.
Hi! Since the power fuse was blown and your attempts to install a new fuse causes sparks, it would seem that there is a large draw or short on that power system. First, disconnect the ground cable to the battery and install the new fuse, then reinstall the ground cable to recheck the circuit. If the fuse blows again, then there is a significant short in that circuit and will require a skilled technician to diagnose and repair your blown fuse.
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
How do I adjust the side view mirrors?
The Side View Mirrors come in useful when driving. The Side View mirrors allow you to see cars behind you. These mirrors are adjustable to fit your driving needs. to adjust the Side View mirrors. Turn the Side View mirror...
Sudden starting problem that happens sporadically
Hi there, thanks for writing in about your 1992 Oldsmobile 98. It is possible that the starter relay is failing (https://www.yourmechanic.com/services/starter-relay-replacement). This relay is different than the starter solenoid that was likely replaced with the starter. The starter relay has...
Is it a 4 speed or 5 speed?
Hello. Thanks for writing in about your Mazda Protege5. Your 5th speed is known as overdrive. Manual shift does not use overdrive. This is normal operation.
Interior lights do not work - 1987 Jeep Grand Wagoneer
From your description, it sounds like a professional mechanic with great electrical diagnostic skills, like a certified technician from YourMechanic, will need to look at the vehicle, with or without a wiring diagram, to get to the bottom of the...
How do you reset the mileage gauge on the dashboard
You should have a "select/reset" knob up in the right hand corner of your dash that will allow you to click and scroll through the various displays such as instant fuel economy, odometer, trip meter, outside temperature. Be sure the...
Chipped windshield
Depending on your State you may be able to have any officer sign off on the ticket that they verified the repairs were done. If not then take it to a windshield shop and have them sign off on it....
Leaking coolant out of radiator drain tube
If you are referencing to the radiator drain tube then you need to check to make sure the radiator drain valve is in the closed position. If the drain valve to the radiator is closed and still leaking then try...
Hesitation when accelerating
Hi There, It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement) monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
engine revs up and down when in park and it dies when puts in drive
Hello, thank you for writing in. There a large number of components that can cause these issues. If you have not scanned the vehicle for diagnostic troubleshooting codes, you will want to do that first. Even without a check engine...
Related articles
The Best Used Cars to Buy for Highway Driving
Do Do you spend hours each week on the highway for work? Maybe you just live in a very rural area and have to drive for 30 or 45 minutes to get to the grocery store. Whatever the case, your...
Symptoms of a Bad or Failing Exhaust Air Supply Tube
Common signs include exhaust leaks, engine performance issues like a reduction in power and acceleration, and increased emissions.
How Long Does a Cooling/Radiator Fan Motor Last?
The The cooling/radiator fan motor is part of your vehicle’s cooling system. It transports heat away and dissipates it into the outside air. The fan motor is the part that actually powers the cooling fan. The cooling/radiator fan motor keeps...
Browse other content
Estimates
Services