How to Test Your Car’s Starter and Solenoid Assembly

How to Test Your Car’s Starter and Solenoid Assembly


hey what’s up there it is so first I’m going to show you can test your stormwater and so on I will you’ll need for this this is a fully charged 12 volt battery instead of jumper cables from alligator clips but if you don’t have alligator clip screwdriver will work as well alright so here’s a closer look at our assembly this top piece is your solenoid this is your star motor and this gear here is what the cranks your engine when you get in your car and try to start your engine so the way almost all starters work is basically on the back of your solenoid you’re going to have three posts you’ll have a post like this and you’ll have usually a thick cable supplying this post with a constant supply of tow bolt battery voltage and you also have a smaller terminal like this one and this is where you get usually a single wire attaching to this and that Y also supplies 12 volts and that 12 volts comes from your ignition switch whenever you turn the key to the start position and then your third post which also sometimes looks like a post similar to this one is where you get 12 volts supplied from your solenoid to your starter motor by a wire cable you can usually see attached to it so a constant value supply regardless if their key is in the ignition or not and two bolts here only when you turn the key to the crank position or when you try to start the car and 12 volts from this post to your starter motor only when you get 12 volts applied to this signal post and since your saw motor is attached to your engine block by the way of these two bolts it gets its grounds from your engine alright so the first step is to attach our cables to our battery next we attach our power to this post where we get constant voltage and the ground side to the casing make sure you get good connections next I’m going to supply 12 volts to the signal post simulating a signal from our ignition switch and you can get this 12 volts directly from the battery or it probably easier to you guys to get it from your jumper cables and if you don’t have alligator clips you can just preach the gap with the screwdriver you put one on them two single posts and then you just touch your jumper cables if you have a good working starter motor and solenoid this gear will come out and spin alright here we go all right great so as you saw this gear not only popped out they also spun without any hiccups so we’ve got a good start here but let’s say you do this this and this ski only spins in place and it doesn’t come out if that happens which means that your starter motor it’s doing its job which is to spend this gear but your solenoid is not working properly and it’s not pushing this gear out on the other hand if this gear does not spin but only pops out it means that your sauna is working properly but your starter motor is probably shot now these is when you go to autozone and say you need the starter for your car you’d be something like this that comes with the solenoid and you can’t really buy them separately so if you do this this and one of the other is not working just by sorry I will come with a solenoid also before you throw in the towel and go buy a replacement starter motor and so on right make sure you inspect these posts very closely make sure they’re clean of any corrosion like if this saw motor had failed on it at the test before I go buy a new style motor I would probably take this nut out I clean this post clean this nut clean this cable of wire that’s going to our motor for most all night also clean this post here maybe with the 400 grit sandpaper to sand it down make sure it’s nice clean and shiny and then I will repeat the testing procedure and if it fails once more then I will replace the starter motor and solenoid assembly now if you just found out that your store motor is working properly but you’re still having problems starting your car then I would recommend you watch this video I’ll put a link to it right here on the side of screen and that video show you how you can properly test your battery which is usually the culprit when you have a hard time starting your car especially since symptoms of a bad battery could be very similar to a bad start or an alternator and I’ll put links to those videos on the screen and in the description box as well and also you may want to consider following me on Twitter I just opened my Twitter account a couple days ago and I’ll put a link to that in the description box as well so yeah on this videos about there if you liked the video please give it a thumbs up subscribe if you want to see more like it I’ll see you Sam thanks for watching