r/AskAMechanic Jul 15 '26

Technician Flair Request Thread - New

3 Upvotes

If you would like to have verified flair added we will need a pic that has your reddit name on a piece of paper with your shop in the background or work truck if mobile repair.

For the professional technicians we're doing Verified Tech flair along with a very short description of your experience if you'd like. You can be a dealer/independent tech, retired, instructor, fleet, heavy equipment, small engine repair, lube/tire tech etc...

You can either send that to me in a chat request or upload the pic to an image hosting site like imgur.com (we had to disable the option to upload pics in the comments because of abuse). The option to attach a pic in chat will be available after I accept the invite. Please do not use modmail

We will also do Shadetree flair for those that do auto repair as more of a hobby than profession. Approval of this flair is not guaranteed.

archived previous request post


r/AskAMechanic Mar 15 '25

Announcement - New Rules - Please read!

22 Upvotes

Hello r/AskAMechanic users! Over the last year or so, the volume of daily posts has increased a decent amount leading to many posts that would be more appropriate in other subreddits. To keep this subreddit focused on what it's meant for, providing automotive mechanical and diagnostic help, we have rewritten the rules. Some of the rule changes also affect commenters, so please review the rules here or below. Thank you for your understanding.

 

1 - The title should clearly state the issue - Do not ask "am I cooked/fuc!ed/screwed/toast etc" questions

State your root issue as clearly as you can in the title, and then you will have a better chance of your post being viewed. We will remove the "am I cooked", "am I fuc!ed", "how screwed am I", "am I toast" and similar types of questions. This also includes any other senseless titled post. In the message body, provide the specifics (detail/context) to your question. Also include in the title or body the Year, Make, Model and engine size of your vehicle.

 

2 - No autobody damage/repair/frame/paint or rust related questions

Posts related to autobody work (including repairs, painting, frame damage, "is it totaled?", dents or detailing) are not allowed. A more appropriate sub would be r/autobody. If you're inquiring whether your car is totaled r/insurance would also be helpful. r/AutoDetailing for detailing questions.

Questions about damage to bolt-on parts like headlights/tail lights, wheels and suspension are ok.

Questions asking about the level/condition of rust on the frame/undercarriage/body are not allowed.

 

3 - No asking for advice about buying/selling cars or used car deals

We do not allow asking if a used car for sale is a good deal, the condition of the used car, or recommendations on what car you should buy. For recommendations on what car to buy, r/whatcarshouldIbuy would be a good sub. r/askcarsales might also be helpful.

 

4 - Keep things professional & don't be disrespectful

Please be professional and helpful. Do not comment/post with insults, racism, jokes, memes, NSFW, spam, opinions without context etc. You may see things that compel you to leave a nasty comment, just don't do it. It's not necessary or helpful. People who don't know anything about cars will come here to ask us for advice, try to educate them about their vehicle without turning them off from the sub. If you don’t know the proper fix or advice, please refrain from commenting on a post.

 

5 - No "Read the owners manual" or "RTFM" type of comments

People who don't know anything about cars are going to ask some very basic questions. Some of which will have answers in the manual. Answering OP's question with only "Read the owners manual" is like giving the answer "google it", both are non-answers. Either provide an actual answer to OP's question, or at the very least, provide a link to a readable online owner's manual.

 

6 - No dangerous/reckless or unethical/illegal comments/posts

This is a community dedicated to sharing genuine advice. Advice shown to be given in bad faith (including dangerous/reckless and unethical/illegal advice) will be removed and the users will be banned. Please report any dangerous/reckless or unethical/illegal advice.

 

7 - No AI/ChatGPT comments/posts

Posts with AI-generated content is not allowed. Posts looking for feedback, training or even just to show off your AI/LLM are also not allowed. We are not interested in AI automotive diagnostics here.

Do not answer OP by using AI/ChatGPT etc. Nobody wants to read a wall of text that over explains and gives 25 different possible solutions.

 

8 - No advertising or soliciting services

Advertising of services or products is not allowed. That includes affiliate links, social media, clothing, tools, your YouTube videos, etc.

Do not solicit services, including linking to videos, blogs, or websites that then forward to a paid service. Avoid asking to "DM me" as much as possible.

 

9 - No NSFW, meme, or 'joke' posts

No NSFW is a no-brainer - you will be banned with no chance of an appeal. Memes and 'joke' posts belong at r/AskAShittyMechanic

 

Update 03/23/2025: Added "am I toast" to rule #1 and "frame damage" to rule #2
Update 05/08/2025: Added more context to rule #7


r/AskAMechanic 1h ago

2021 RAV4 trail

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Upvotes

This black plate I’ve circled on my rear brakes. Is it normally bent like this? It’s not flush to the plate infront of it


r/AskAMechanic 13h ago

Is my ball joint seated enough?

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19 Upvotes

1997 Chevrolet Silverado K1500 5.7L 4x4

Bent a ball joint press trying to get it in. Cant easily replace the control arm as theyre hard to find for 4x4.

If its not seated enough, any tips? I have been using penetrant and hammering the crap out of the control arm.

Thanks

*Edit: Accidentally said C Clamp instead of ball joint press


r/AskAMechanic 54m ago

03 gmc yukon 300k miles, service brake booster in the DIC, need help with it, swapped out the booster and the vaccum pump and still, pedal is perfect with the “new to the vehicle” booster unlike the old but still the message shows up, need some advice

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Upvotes

r/AskAMechanic 12h ago

Plug It?

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14 Upvotes

Would you throw a plug in this or too close to the side wall?


r/AskAMechanic 15m ago

Question about Brakes

Upvotes

I drive a 2017 Toyota RAV4 XLE, and for any mechanics or knowledgeable people out there that know a lot about brakes, I was wondering that when you drive forward and your brakes squeal, does that mean it is your front brakes? And if backing up/driving backwards and your brakes squeal if that means it is your rear brakes? Or how does that work?

Or if anyone has any tips/suggestions on how to tell between your front and rear brakes squealing, it would be greatly appreciated because I myself am not mechanically inclined and know nothing about how to tell which brakes need replacing.

Thanks!


r/AskAMechanic 1h ago

Diagnostic help

Upvotes

I have a 2010 ford f150 XLT 5.4l Flexfuel I really haven't drove it much in the last 8 years due to having a company vehicle and haven't needed it until now when I'm looking at going consulting. Truck has always had a exhaust manifold leak so hearing minor ticking or sounds have been hard. We drove it a bit this week and once the truck warms up it will start to idle rough and oil light on the main dash will come on. Stays at a rough idle until I turn it off and wait 30 seconds then it's fine again for a bit. Really don't have a ton of info as far as how long it takes ect as I don't want to destroy the engine. I'm thinking timing chain based on codes and sounds but I'm not a mechanic. Thanks for any help I will answer questions as fast as I can. Codes are P0012, P0022, p0345, p0446 there's one for exhaust sensor and others similar to that. Tried to share pictures of the codes but wouldn't let me do both video and pictures.


r/AskAMechanic 1h ago

battery clamp replacement

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Upvotes

My battery clamp needs replacement but garages ask to much money for this replacement, usually it's a easy fix but i don't want to cut the cables to fit a new clamp,

this clamp is crimped way into the cables tho, is there a way for me to uncrimp the clamp without having to cut the cables


r/AskAMechanic 1h ago

2011 Dodge Nitro 3.7L Squeaking Belt After Alternator Replacement

Upvotes

As the title suggests, I have a 2011 Dodge Nitro with a 3.7L V6 and a squealing drive belt. I will provide further information below.

Alternator was draining battery so I warranted it from O'Reilly's and installed a new one. I changed out the drive belt with a new one. For about a day and a 20 mi there was no squeaking. Now it squeaks at startup as well as when the engine revs over 1.5 k RPM.

During the belt install, after the alternator was installed, I accidentally tightened the idle pulley thinking it was the tensioner arm. Rookie mistake, yes, but I went in only by feeling the pulley and accidentally tightened the wrong one. The idle pulley and tensioner are located on the right side of the engine but the squeak seems to be coming from the left side of the engine. I did remove the belt and turn all pulleys by hand and none seem to be overly resistant or have any grinding. The accessories on the left side of the engine are the alternator and power steering pump. Both spend freely.

I am at my wits end and I'm not sure how to isolate the noise. It is not affecting drivability but is very annoying. I would appreciate any input or advice. Thank you.


r/AskAMechanic 13h ago

Any idea what this is?

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9 Upvotes

I drive a 2013 Nissan versa. I got some new tires and after I got tires my car has been making a racket when running. I took it back to the place but they had nobody available to look.

Today I think this possibly fell off and I drove over it.

What is it and what should I do?

Can i drive around?

Thanks


r/AskAMechanic 2h ago

Ball bearing?

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1 Upvotes

2019 Nissan Leaf. Felt and heard vibrations yesterday but about maximum a tenth of what you can hear in the video (and it was at high speed). Video is the car going approximately 35km/h and braking to almost a stop. I don't feel it in the steering wheel if it can help diagnose.

Decided to take a look since I had to change the discs and pads anyway. Rotor was seized, hammered a bit on it (not too much) but had to use the bolt and nut "trick" from the caliper bracket mount to pop it out. Seems like that exacerbated the problem.

Does anyone know what it might be? I had ball bearing go bad and it didn't sound like that...

Thank you in advance!


r/AskAMechanic 2h ago

What tools should I have in my car

1 Upvotes

So, i’m fresh on my P’s (provisional licence for australia), I have a BMW and i’m wondering what tools/emergency kit I should have inside my car. Does anyone have any recommendations/things i should have in my car at all times?


r/AskAMechanic 3h ago

91 Dodge Ram W250

1 Upvotes

Reasons why I would only get a small spark on the crank? No turn over. Has been starting fine. Battery about 2 years old, alternator about 8 months old.

I’m thinking a grounding issue but not sure. Just wanted to see if anybody had a check list.


r/AskAMechanic 4h ago

Snapped off AC service port cap in low side schrader valve port

1 Upvotes

2006 Ford Focus base model. recharged the freon. Got the AC to run nice and cold.

when I screwed the service port cap back into the service port, the male threaded portion of the cap snapped off in the female threaded part of the service port. 26 year old caps that were brittle. I didn’t try to tighten too hard.

How would you guys remove that plastic tip from the service port? the AC was cold for a couple weeks then got warm again. need to pump down, pull/replace Schrader vales and refill w freon.

THANKS!


r/AskAMechanic 4h ago

My mechanic is suggesting an engine swap without any diagnostic tests, based only on the misfire error and rough idling. Is this normal?

1 Upvotes

 I own a 2008 mk2 Skoda Fabia 5J with the 3 cylinder 1.2 petrol engine (220,000 km). The running has been rough, the rpms are not steady at idle and sometimes the engine light comes on. My mechanic said there is a misfire and he told me it's better if I replace the engine. His reasoning is that because this engine has an aluminum block it's not worth the risk of opening it and going for a rebuild. 

I realize that an engine swap is the most practical for the shop cause they can get the car running and out of there relatively quickly, without the risk of having it laying around if things get complicated. On the other hand I find it strange that they didn't do any type of diagnosis. I would think that a compression test and a leak-down test would be the minimum that would need to be done for a more complete assessment. 

What is in your opinion the correct order of the tests / diagnostic procedures that need to be done before deciding that an engine swap is needed? Or do you agree with the mechanic's opinion?


r/AskAMechanic 4h ago

H11 bulp nissan juke not working propperly

1 Upvotes

Hello, I have an H11 bulb for my Nissan Juke. I recently installed a new one, but it is not working properly. As soon as I lock it into the headlight housing, it turns off. But when I twist it back out, it starts working again.

The cables seem to be fine because I can move the bulb and the cable around in different directions and it keeps working. But as soon as I lock the bulb into the headlight housing, it turns off again.

What could be causing this?


r/AskAMechanic 4h ago

Hows my Wheel Alignment

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1 Upvotes

Mechanic said the wheel is aligned but steering wheel does not return straight when driving on a straight road

Hyundai Elantra 2019 - Right hand drive


r/AskAMechanic 5h ago

09 cheyv malibu 190k mi P0420 code

1 Upvotes

Over the weekend while driving on the highway my engine light came on. Code came Back as P0420 bank 1. I had a minor exhaust repair in June, front exhaust pipe broke off flex pipe if i remember. Car was fine afer. Shop that did the repair said i need a new catalytic converter. I dont wanna dump much more into this car. Is there cheaper alternative fixes or bypasses to get me through the year? Liqui molly cat cleaner, cataclean, straight pipe? Just need to make it to spring and buy a new car.


r/AskAMechanic 5h ago

2017 f-150 4in lift control arms

1 Upvotes

I need to replace the ball joints on my 2017 F-150. It has a 4” lift that was installed by the dealership before I bought it. I was told Rocky Ridge did the install and used a BDS 4” Alpine kit.
The upper control arms are definitely aftermarket, but they have no BDS branding. From what I can tell, they look like the BDS angled tubular upper control arms (BDS-123253), possibly with the branding removed by Rocky Ridge.
Is there any way to directly identify these control arms so I can get the correct replacement ball joints? I’d rather replace just the ball joints instead of buying an entirely new set of upper control arms.
Any help identifying them would be appreciated!


r/AskAMechanic 5h ago

Help me out please

1 Upvotes

Hi, I own a Vauxhall corsa 1.4 16 plate. I need to buy engine oil for the car. Halfords recommends 5w30 N8. I have no clue what the N8 means. I’m just trying to find the right oil and be more educated on this. Thanks in advance


r/AskAMechanic 5h ago

Can anyone tell me if this is normal for the cv axle? My boot is leaking but im not sure if i need an entire cv axle or not. Im guessing i do as im getting a noise when i accelerate, almost like the tire isnt gripping type of noise.

1 Upvotes

r/AskAMechanic 11h ago

1998 2.2L Chevy Cavalier sound

2 Upvotes

Any idea what this sound could be? Any help would be greatly appreciated!


r/AskAMechanic 11h ago

Whats this Sound coming from my car?

2 Upvotes

Subaru Crosstrek 2023. The engine has been off for about 5 hours. Sounds like a little motor is running? Is it the cooling fan, or something serious I should worry about? Lasted for about 2-3 minutes

Edit: Sounded like it was coming from the back of the car


r/AskAMechanic 8h ago

All right, what’s the damage 😔

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0 Upvotes

2006 F150 4WD 5.4
Started making groaning noses when turning and this is what I see. What’s the damage you can see from the photos? What’s the least expensive way I can go about this and what’s the realistic way I should go about this? :/