It’s sucking in the amps trying to take a charge. If it is not putting out very much amperage (less than 20 amps at idle) but still getting hot, I would say the alternator has an internal issue. i could rev engine in park however when i try to rev in engine in drive nothing happens . The alternator is a key component in running the electrical systems in your car. It’s hard to trace when it comes from the alternator’s copper wires. Tap to unmute. hi my alternator keeps getting hot and smoking i changed the alternator and its still smoking so i thout it was the starter so i changed that but still smoking and when parked up it keeps draining the battery also put in now battery any one nows why this it??? Recommended Services. Yes alternators give off heat, they have an internal fan to cool it. ya i have checked all the wires and they seem to be ok. my 85 year old grannd dad found the proudlum it was the pre/post-heating system control/relay unit, Good to hear you have found the source of the problem and thank you for posting up your result. Powered by Discourse, best viewed with JavaScript enabled. Your battery went dead and sat dead for probably a year or longer, which is severe neglect. Re: alternator wire is Smoking bad! Comment; Flag; More. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Re: Alternator so hot belt is smoking Update: I put a straight edge on the Alternator Pully (Front face) and it lines up with the Back of the power steering and flywheel pully. 1) So car wont start, son gets a boost, brings it Home and I find the Alternator is smoking and hot 2) Dad buys re-manufactured alternator, installs and tests voltage..it = battery voltage at idle (12.4) rev it up, get 13V. Had to jump it of course to get going.Later I found that the alternator was Very hot as well as the batt. the batt.and terminals. It’s sucking in the amps trying to take a charge. It's putting out 14.7 volts and never drops down untill I disconnect the plug in the back of the alternator which made it drop down to 12.5 volts.Then the alternator cools down. My car has 60000 miles. The will get too hot to touch after running a while. Background: 1. The alternator takes the energy from the crankshaft and turns it into the electricity that is stored in the battery of your car. i replaced the alternator and charged the battery and the it was fixed at first. What is the deal?? If not hooked up to a battery charger it will not have enough juice after about 2 weeks to start it (I replaced the battery as well. In that case, you will smell a pungent odor that is hard to miss. I replaced the megafuse the battery and the alternator and it still gets very hot. Once the battery overheats the electrolyte solution inside boils and ultimately the battery can explode sending battery acid in all directions. 1 Answer. The other thing could be the battery to frame cable has a bad connection at the frame and the system is grounding through the wire from your alt to your battery ground. Improperly jump-starting the vehicle can send a surge through the battery that destroys one or more cells in the battery or shorts it out. Check the heavy duty power cables. That’s why the alternator is hot, it’s trying to do its job: charge the battery. I have a 98 altima. Smoking Alternator Wire I own a YM1600, I bought it a year ago from an older gentleman who used it with a 4' finish mower. for the past few months the car has had alot of trouble getting up and going in traffic. I hope this helps, let me know if you can do these checks. Turns out that the alternator was in slow death for about 2 years. I’m wondering if I covered all the possibilities. 340 000 KMS. Thanks, Tim. Possibly one has damage to its covering and is shorting out on the engine block or bodywork or chassis. Its a cheap fix and no real need to buy another alternator. Your alternator may have a bad bearing, this will cause enough friction to heat up the alternator case. Hi all, I need an alternator guru that can give me some clues as to what the heck is causing my 3G Alternator to get piping hot after less than a minute of idling. This topic contains 0 replies, has 1 voice, and was last updated by … 1993 coupe Cheapo REMAN is not a good option in this case, normal answer is they are decent, however for some reason these modern Ford alternators will pass output voltage and amperage and the diode no-go test but still burn up. You might try to find a used or rebuilt alternator. If voltage is 13.614.6 volts, the alternator is OK, but power isn't getting to the battery. Print this page ; Share this page × Ad. When an alternator fails, the bearings inside usually have failed to a point that causes them to whine severely and, depending on how badly they have failed, they may also smoke due to the excessive friction they create. The alt was still hot 250-300 deg.measured with an IR thermometer. SUBSCRIBE if you would. i went to my local advane auto for them to test the battery and alternator. but then again i started the car cold and the alternator gets too hot to touch within 1 minute. When your car is running the alternator helps to power the different electrical systems in your car and keep your battery charged. Pull the smoking wire off your battery and see if it will start. Get a new battery. If you smell rotten eggs, notice your battery is swelling, or see steam coming out of it, … Copy link. It oozes a subtle aroma-like smell that comes from ozone and hot metal. Its always up to you of course. throwing a charger on the battery that is rated over what the alternator is rated at can cook the diode trio like lift-dr said. Your battery went dead and sat dead for probably a year or longer, which is severe neglect. I had noticed 2 things: 1. alternators will get hot. Clicking this will make more experts see the question and we will remind you when it gets answered. 3G Alternator Getting Hot Hot! I was going over it and doing some repairs, and noticed that the original alternator was getting son-of-a-bitch hot within just a minute or two of running it. It's reasonably easy to build a regulator in the lab, but getting one to work consistently in the hostile environment of an auto engine is tricky. LR3 Smoking Alternator Remove and Replace - YouTube. then battery died after leaving it in park engine running on side of road . Your battery is kaput, and your faithful alternator was doin' all it could to charge up a non-charge uppable battery....check the date on the knock off stickers indicating the date of the first charge....five years is pretty much it. terminals. I saw a disconnected wire on the back of it, and then removed the alternator and took it to Autozone to be tested. For a better experience, please enable JavaScript in your browser before proceeding. You should carefully tap the alternator with a hammer when the car is running in order to test the levels and determine if the alternator is at fault. I have a 65 Mustang Coupe. Too many things can go wrong. An alternator will typically last about 7 years or about every 80,000 miles. I would get a diagnostic check done and see if it tells where the source of the electrical drain is. hi my alternator keeps getting hot and smoking i changed the alternator and its still smoking so i thout it was the starter so i changed that but still smoking and when parked up it keeps draining the battery also put in now battery any one nows why this it??? Don't try adding a resistor or whatever. Nevertheless, you will get a strong odor if the alternator is burnt out completely. the alternator is out of plane with the others, and it is also skewed (cambered). RenaultForums.co.uk is the best place to discuss the French automaker’s cars including the Megane, Clio, Modus, Captur and more. My car has an automatic transmission. Alternator is burning hot… too hot to touch! Share. Want Answer 0. It takes up to 30 minutes for the modules to all power down. if you purchased from a cheap auto parts store with the lifetime warranty youll find out you purchased a life time of changing substandard parts (and they only replace 3 times)i would suggest you take it to a local rebuilder (whole vechicle) and have tested Is it okay to have the motor running with a … My garage: 1990 Renault Trafic T1100 Camper, 1992 Vauxhall Astra Mk3 Estate, 1991 Harley-Davidson XLH 1200, 1979 Triumph Bonneville T140E, 2006 Citroen C3. Reply #5 – Wednesday, Jan 19, 2011, 05:17 PM if it is/was a stock alternator, its just a little guy. Smoke coming from the alternator means its gone bad, to know exactly you would need to talk with a guy who rebuilds them. A hot wire could also be the reason for engine smoking but not overheating. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The electromagnetic strength of the field determines how much the alternator puts out. The most common reason that your alternator is not charging is because of a damaged alternator. Anonymous . Level 2: An expert who has achieved level 2 by getting 100 points. measuring from the other pullys it appears as though there are two problems. Join now! Bit low i think 3) Son drives it for a day or two, it wont start again! If the alternator is putting out max amps, it won't last long. Go to Step 03. That's dangerous. pulled over put in park. I would test the voltage at the battery with a meter, should be around 12 V. A good test is at 1500 rpm, headlights, heater fan and radio on, should hold around 14 V. Posted by robertsjosh2 on Feb 03, 2010. You can feel the bolt that goes thru the plastic case that holds the megafuse and the bolt will hurt to touch. id say disconnect the cable from the alternator and see if the short goes away. Your alternator has a bad voltage regulator. Watch later. That’s why the alternator is hot, it’s trying to do its job: charge the battery. Turns out it wasnt the right alternator for the car, even though it passed the test. However a real alternator specialist may do better. I changed all fluids and filters afterwards and has run great since. because batteries will degrade, not accepting a charge ten percent per year...so if you're runnin' with a ten year old battery will not be charging up...at all and force the alternator to run till … Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › brand new Alternator Smoking Hot. if it does, its the alternator. I changed the ground cable end but I’m apprehensive about starting it back up. JavaScript is disabled. I have an '88 Toyota Camry that sat for 2 yrs. If voltage is under 13.6 volts, go to Step 04. Alternator pulley gets hot and starts smoking after running only a couple minutes. Alternator is brand new. Info. It is running hot to the touch. I don’t want to have to buy another alt. the other day i noticed some smoking from the alternator i believe. Mass Effect: Andromeda Angry Review. 2. If an alternator’s voltage regulator is beginning to fail, or has failed, the alternator can begin to send too much voltage back to the battery, which in turn causes the battery to overheat. The alternator wire gets very hot and it melted the top of my battery. The ground wire’s a good start-- go ahead and fire it up and see what happens. It also would be nice to see how many amps the alternator is putting out. Thanks. You need to make some power and ground voltage drop measurements at the alternator stator and regulator circuits to see if anything goes missing or wacky when it quits charging. If your alternator is failing, this can definitely cause it to smoke depending on how badly it has failed. It probably is a problem with the connections somewhere. Alternators that overcharge will typically produce excess voltage to the battery, making the battery case swell up, become very hot and lose its electrolyte through boiling. New alternator getting hot - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. I ended up changing the alt. I have a '96 ford taurus LX. I put an 87 5.0 EFI motor in it and went with a 3G alternator setup. the battery recently died and noticed the alternator was smoking and getting really hot. Thank You for watching. made mistake of driving with it... car lost engine power on the highway. Get a new battery. When you replace a alternator make sure battery is fully charged 1275 hydrometer reading on all cells. The way to test if your alternator is damaged is by using a multimeter. Typically we like to see less than 50 mA's draw with everything off after all modules have powered down. Well done Grandad too :d You can't beat experience and wisdom that comes with age. Checked under hood to see alternator glowing red hot. Any input would be appreciated. Shopping. If the ground didn’t fix it, try the red wire. its hard to tell since its buried under so much other motor stuff.