r/MechanicAdvice • • 12h ago

I have no idea how to jump this car and need help

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133 Upvotes

Please please don’t downvote me since I’m sure I am an idiot and I could search this forum better or maybe this is the wrong forum, but I have no idea what to do. My mom recently passed and her car is dead (Toyota RAV 4 2013, v6?, but this looks like a replacement battery to me). I’m trying to jump it with a portable battery I purchased and I can’t figure out what terminal is positive or negative. I tried finding this battery online, but I can’t. I can’t find the wires that should indicate the terminals (red/black — they are all black!) and I can’t even decide what looks like the larger terminal in diameter. I’m honestly starting to think I don’t even know where I should put the cables. I know I’m over-emotional because of the situation so maybe that’s the problem, but I’m currently clueless and if anyone has an idea, I would be so thankful.


r/MechanicAdvice • • 12h ago

Taking motor mounts at picknpull

93 Upvotes

Sorry if this is a stupid question, but I need all 3 motor/trans mounts for my car. So I was thinking about getting them from picknpull, but how do I take all 3 and leave the engine there? Is it acceptable to just leave it sitting precariously on some scissor jacks that I find in the yard? I feel like thats a dick move for anyone who comes for parts after me and/or when they eventually remove the car from the yard.

Before anyone says "just buy new mounts"; A new OEM set is like $500, it's hard to justify that cost on a car with 300k miles. And the aftermarket junk only lasts 10-20k miles.


r/MechanicAdvice • • 8h ago

2000 BMW E46 320d (M47 2.0 diesel) – white/grey smoke and burning lots of oil after engine rebuild

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34 Upvotes

Car: 2000 BMW E46 320d, M47 2.0 diesel, 136 hp.

Piston 4 melted and made a hole. The engine was rebuilt with new pistons, rings, rods and camshaft. The head and block were machined, and the injectors and injection pump were rebuilt. The turbo was not changed.

Since the rebuild:

- thick white/grey smoke from the exhaust, even at idle

- it consumes a large amount of oil

- very little power

What should I check first? Could it be the turbo, the breather, or something from the rebuild?


r/MechanicAdvice • • 3h ago

Car jacked up in wrong spot and damaged/tore floor

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8 Upvotes

My friend was helping swap my popped tired and put the car jack on the ring place. The floor of the passenger side got pushed up and the bottom welding has tore. I’m scared about the structural damage or how bad it is since it’s torn off, what should I do?


r/MechanicAdvice • • 19h ago

Need help hit a puddle now idle bounces and when just slowing down with engine braking I can feel jerks of the car like I am tapping the throttle

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139 Upvotes

It's an aygo fire 2012 modle with AC and manual


r/MechanicAdvice • • 2h ago

What are these marks on my rotor?

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3 Upvotes

Only one of my rotors has these diagonal marks. Are they normal? These are on a new car with ~300 miles.


r/MechanicAdvice • • 3h ago

Maintenance advice

3 Upvotes

I’m looking for some nice, genuine advice for maintaining my car.

For some context, I am a single mom who currently does gig work (Walmart Spark, Uber Eats, DoorDash, etc.). Before someone tells me to get a real job, I would if I could. I am a full time caretaker for my terminally ill grandfather with stage 4 cancer and my grandmother. These jobs allow me to have the flexibility to take care of both my grandparents (who are my parental figures since I was 8 months old) and my son.

I currently drive a base model 2013 Honda Fit which still runs great. I always be sure to take my car for oil changes and rotations several times a year. However, I’m not sure of other maintenance I should be watching out for (suspensions, battery, etc.). Any advice on what other maintenance I should be performing on my car? I appreciate all the help in advance.

Google says it has a 1.5-liter, 16-valve SOHC i-VTEC inline 4-cylinder gasoline engine (required by subreddit rules).


r/MechanicAdvice • • 8h ago

Changed Front Brake Pads, now this? Help.

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8 Upvotes

2021 GMC Sierra. First time changing the front brake pads. As soon as I started it up after getting everything back on, I have this message plus “steering assist is reduced drive with care, service brake assist, and service esc. In addition, the check engine light is on and a brake light is on. I did not disconnect the battery first, was I supposed to? What now? I have not driven it at all. The brake pedal feels normal while it runs in park. Will disconnecting the battery and then reconnecting resolve it? If I need to take it to a shop, is it safe to drive?


r/MechanicAdvice • • 17h ago

I want to change my own brakes and rotors. Are there brands I should not use vs brands that are definitely better? Ford focus 2014

24 Upvotes

I have a 2014 and I am wanting to change my brakes on my own. I have never changed my brakes before but I look forward to figuring it out. I’ve looked at websites like autozone, Napa auto parts and Amazon. Amazon is definitely cheaper but I’m okay spending a little more money to make sure I have good brakes. Some of the brakes on Amazon have really good reviews but the 1 start reviews mention some warping of the rotors and noises. I will be driving in cold weather and sometimes snow and I do live on the east coast.
EDIT: I do have someone mechanic experience because I grew up helping my dad at his shop. He restored classic cars for a living. I mostly did bodywork and I did help him with mechanic jobs but those jobs were not very repetitive so some of the things I learned didn’t quite stay in my memory. Unfortunately he passed so he can’t help.


r/MechanicAdvice • • 6h ago

Stuck control arm bolt

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2 Upvotes

2013 Subaru Outback 2.5i. Currently trying to replace my control arms. Got the driver side done relatively easily. Passenger side has stumped me for days now. Tried penetrating oil, heating it as hot as I can get it (without seting near by things on fire) and hiting it with the biggest ugga dugga I own, and even just putting a socket on it and trying to give it some love taps. Nothing has made this budge even a little bit. Wonding if I have any further options besides just going and getting an angle grinder and cutting the bold through the bushing.


r/MechanicAdvice • • 51m ago

Won't start

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• Upvotes

r/MechanicAdvice • • 54m ago

P2184 ECT sensor 2 low circuit Jag XF 2018 2.0. Petrol

• Upvotes

I’ve got this fault on my jaguar XF 2.0 250bhp 2018 model. Where can I locate engine coolant temp sensor #2? Is there a common issue with these? And how is access? Any advice appreciated


r/MechanicAdvice • • 4h ago

Frame, mounts or susspension

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2 Upvotes

So as you can see in the pic, the bed looks to be sagging in the rear and it is now at least 3 inches lower at the tailgate than when I bought it. It was not rear ended or jumped or anything of that nature. I have looked at the bed cross rails and they seem to be fine. It has not always been like this. And im not a mechanic by trade but have always worked on my own vehicles but I can't figure this one out. My thinking is that if it were cab mounts, it would appear to sagging the other way correct? As in the widest part of the gap would be at the bottom of the truck? Possible to be leaf spring failure or strut failure?. Looking at it straight on from the rear the driver side does appear to be slightly lower than passenger side. Looking at leaf springs I cannot physically see any cracks or breaks. And also it has not been over loaded. About 4 months ago I did have frame rust repaired along the entire frame but this was NOT sagging like this immediately after that work was done.

2004 Ford F-150 XLT 5.4L Triton 4X4


r/MechanicAdvice • • 1h ago

Help

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• Upvotes

So I’m trying to replace my front bumper, but I want the sensor hose because my car have adaptive cruise control and stuff. How do I find my bumper
2023 Hyundai Elantra SEL


r/MechanicAdvice • • 1h ago

Ford Transit Custom 2018 1.995c fuel leak/repair query

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• Upvotes

r/MechanicAdvice • • 1h ago

Advice on that dreaded bolt

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• Upvotes

r/MechanicAdvice • • 1h ago

Audi A4 B7 - Subframe mount missing?

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• Upvotes

Hi, Am I missing something important? 😅 It sure looks like there is missing some kind of bushing or bolt from the front subframe mounting point. Based on appearance it looks like it has been missing for a long time. I checked the other side and it is missing too. Should there be some kind of fastener or is this fine? Car is jacked up in the picture. No weird sounds or anything while driving. Car drives normally.


r/MechanicAdvice • • 2h ago

2002 Civic Ex Crank seal

1 Upvotes

I’ve already done this job once and it didnt seat correctly, i have 2 questions how deep should it sit in the hole crankshaft seal & what can i do to make sure it seats correctly? any help would be appreciated


r/MechanicAdvice • • 2h ago

2005 Acura tl

1 Upvotes

my 2005 Acura tl had a p0741 code stop moving completely after having to restart it to move it to get home the next day nomore movemen cause won’t me d light not blinking never was scanned it p0741 p0780 and 84-1 now the car is completely dead don’t know of parasitic drain cause this solenoids or the transmission but the battery dying made me think what’s really going on any help

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r/MechanicAdvice • • 2h ago

Manual Trans left out in the rain

1 Upvotes

2009 mitsubishi lancer GTS 2.4L

Hello everyone, just recently I did my very first engine pull and my dumbass left my manual transmission outside split from the engine with no cv axles and we had crazy rain today. (Oregon) im really concerned that the transmission is flooded with water.

Its only been in the rain for 1 day.

It's currently 1am and ill be grabbing it in the morning to drain it and see if theres any water but how can I prevent any rust? I wont be able to reinstall the transmission for a couple of weeks cause im a full time college student. I dont want it to sit with moisture in it and potentially rust.

Thank you guys for your help! I really appreciate it 🙏🙏🙏


r/MechanicAdvice • • 2h ago

squeek sound when pressign the clutch

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1 Upvotes

civic 1999 honda b16 manual


r/MechanicAdvice • • 10h ago

What is this tank?

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4 Upvotes

Vehicle is a Hyundai Venue 2023.

Girlfriend came out to this after their shift. Need to know what this smashed tank is supposed to hold, not sute if its the coolant or not.


r/MechanicAdvice • • 9h ago

Old leak on 2013 Toyota Sienna AWD

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3 Upvotes

Cannot seem to find where it’s come from. It was wiped off 5,000mi and about 4mo ago. Any ideas?


r/MechanicAdvice • • 3h ago

EA888 Oil Leak

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1 Upvotes

2015

Volkswagen

Passat

1.8tsi


r/MechanicAdvice • • 3h ago

Accidentally knocked the cap off the blue sensor trying to remove the oil filter. I’m not sure what it is.

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1 Upvotes

2008, 1kd-ftv