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Motor 1
22-07-2025
- Automotive
- Motor 1
‘Literally the Worst Fault to Chase in a Vehicle:' He Turns on the Turn Signal. Then the RPMs Start Yo-Yoing
You trust your instruments. But what happens when your rpm gauge starts bouncing every time you use your blinkers? Welcome to one of the weirdest and most annoying electrical gremlins a car can throw at you. A viral video from automotive-inclined creator Andywhyisthat (@andywhyisthat) shows the mystifying footage of a Honda idling normally at just over 1,000 rpm. However, when the left blinker is engaged, the tachometer needle starts bobbing in rhythm with the blinker, between 0 and 2,000 rpm, with no change in engine speed. What's Causing the RPM Yo-Yo Effect? The most common explanation? A faulty or corroded ground. Many vehicles rely on shared grounding points for multiple systems. If a ground connection is loose or rusty , electrical signals can 'bleed' between circuits. That's how a blinking turn signal might send a pulse to your gauge cluster, causing your tach needle to bounce like it's trying to keep time with the blinker. There are plenty of forum discussions about this problem. 'When the turn signal is blinking, the tach needle jumps like 50-100 rpm in time and rhythm of blinker,' one user wrote on . 'The engine idle is not fluctuating.' According to Speedway , You Should Check: Negative battery cable (tight and corrosion-free) Engine ground strap Ground connections under the dash Even a small voltage drop can create weird symptoms, especially in older vehicles. A Weak Battery or Alternator Could Make It Worse If your battery or alternator is struggling , even the small electrical load from a turn signal flasher can cause voltage fluctuations. That ripple can interfere with sensitive systems, such as gauges. One Toyota 4Runner forum user noted, 'My thinking is the battery is not fully charged and the extra load causes the alternator to put out more juice, which increases the rpm.' That could mean the tachometer is reflecting a real (but small) change in engine rpm, or just reacting to low voltage and sending false signals to the gauge. On Reddit , multiple users suggested testing the charging system first. A failing voltage regulator, loose battery terminals, or corroded posts can all contribute to the issue. According to Firestone , You Should Check: Battery health and charge level Alternator output (especially at idle) Voltage stability while using turn signals, lights, or A/C It Could Be a Real RPM Change (But Probably Not) There's also a chance the bounce on the gauge reflects a real fluctuation in engine speed, caused by a dirty sensor, failing idle air control valve , or glitchy throttle body . That's especially plausible in drive-by-wire vehicles , where the electronic control unit handles all throttle inputs electronically. A thread on JustAnswer notes that dirty or aging sensors can cause momentary RPM dips or spikes, especially at idle. But more often, these cases turn out to be electrical quirks, not engine issues. How to Tell the Difference, According to JustAnswer: Plug in an OBD-II scan tool and monitor actual rpm readings If the scanner shows steady rpm while the dash needle bounces, it's likely a gauge issue, not a real engine change. Commenters on Facebook were quick to offer their amateur diagnoses, along with some humor. 'Likely a corroded ground. Water takes the path of least resistance. When a ground wire is corroded, it has plenty of resistance, pushing the electricity to take different paths to ground. Literally the worst fault to chase in a car,' one sympathetic gearhead wrote. Another shared their similar experience: 'had a loose fuse cause the speedometer to do that. Only did it while in gear.' And another couldn't hold back with a dad joke: 'Low blinker fluid.... It happens.' Motor1 reached out to Andy via email. Now Trending 'It'll Be $450:' Man Tries to Get a New Key for His 2022 Toyota Camry at the Dealership. Then He's Sent to the Parts Department 'Gimme A Break, Nissan:' Woman's Car Says She Has Low Fuel. Then She Sees How Many Miles She Has Left on Her Current Tank Get the best news, reviews, columns, and more delivered straight to your inbox, daily. back Sign up For more information, read our Privacy Policy and Terms of Use . Share this Story Facebook X LinkedIn Flipboard Reddit WhatsApp E-Mail Got a tip for us? Email: tips@ Join the conversation ( )
Yahoo
27-03-2025
- Automotive
- Yahoo
These Are The Cars Your Kids Have On Their Walls
Kids, you either love 'em, hate 'em, or think they're OK. I think kids are fine, especially the ones that can chew my ear off about their special interests. Yes I want to know about your favorite dinosaur and don't skimp on the roar recreations! But what really captures my heart is a kid who loves cars. Some of you have kids and are lucky enough to share your passion with them and have it stick. I asked about what kind of cars get your kids excited, and you delivered with some interesting answers. You can find them below. Read more: You Can Buy A 400-HP V-Series Cadillac For Less Than A Honda Accord My son doesn't have posters of cars, but he does have five of my old 1:18 scale models in his hutch. -1965 Pontiac GTO -1968 Camaro Z28 -1993 Porsche 911 -1990 Nissan 300ZX Fairlady -1973 Pontiac Trans Am 455 Submitted by: Fiji ST This right here. But my kids are pushing 60 and contemplating retirement. Submitted by: Muqaddimah KTM 450: Signed Kurt Caselli poster from when he was racing WORCS for KTM. When he died in Baja, my kid was shattered. Interests have moved on over the years, but the poster still has a place of honor on his door. Submitted by: soloyosh I got my oldest in a printed issue of Motor Trend when he was young, Ed Loh even sent him a care package so he can continue his fascination with cars. No poster on the wall, but I think I did my part. Submitted by: Swimbikerun70.3 My collage age son's dream car is a Toyota Prius Prime or a Toyota minivan (The name of which I can neither remember nor spell). What have I done? Submitted by: StPaul No posters (yet), but my 10yo daughter is very curious about manual transmissions. She sees me drive from the back seat and wants to know why my car "works different from mommy's". Submitted by: Stephen. I had a poster of a Ferrari 360 Challenge Stradale that I got from the scholastic book fair on my wall from age like 7 until I moved out of my parents ar 24 years old. I still love that car, maybe its just a nostalgia factor Submitted by: Sal Because of me, both of my daughters have developed a thing for motorcycles. Despite the fact I crashed and tore my ACL during the rider safety course (I locked the brakes during a drill). Also, one kid now has a thing for Corvettes and the other one said she wants a Porsche 911 GT3. Both of them are teenagers. Submitted by: Omer Carrothers My kids mostly want animals or pictures with friends on their walls. My daughter's dream car is a purple Hellcat though, so I could probably talk her into putting up one of those. My son has been more difficult to figure out. He and his friends all get really excited when they see a Tesla (there were ~5 Cyber trucks entered into the pinewood derby), but he doesn't want a Tesla hot wheel/toy. My best bet at getting a car on his wall right now would probably be one of Bumblebee. Submitted by: engineerthefuture My daughter has two, both of them are hand drawn and fantastic. One is a Subaru WRX STI, which was my car so I'll take credit for that. The other is a group B Audi Sport Quattro Submitted by: Matthew Wakefield Want more like this? Join the Jalopnik newsletter to get the latest auto news sent straight to your inbox... Read the original article on Jalopnik.
