My husband attempted to do an oil change on my 2016 mazda cx9, the next morning I tried to back out of our driveway and i hit reverse and it went in reverse and then i put it in drive and it went into reverse, so then i tried to put it in reverse and it went into drive. I immediately put it in park and turned it off. I waited about 30 minutes and it went into drive correctly and i was able to park the vehicle in a perfect position but then when i put it in reverse to back it up a bit, it just stayed there, rpms did go up, but no movement.
he later called me to tell me he accidentally drained the transmission fluid and added the new oil into the old oiI. after learning this, i didn’t drive the car for two days, and he eventually added the amount of transmission fluid he drained and drained the motor oil and added the new oil. He drove it and checked the levels and everything was fine. We drove it the next day all day everything was good. I drove it to work and back and everything seems fine, i’m just hyper vigilant now on every little slight movement in the vehicle since my last vehicle (gmc acadia) went to shit, transmission definitely went out on me while driving. today he drove it to lawrenceville (we live in powder springs) and back home and everything was smooth. I’m just worried and nervous when i drive the car. My question is; will the car be fine?

I have a 2015 Chevy Malibu and my brother dipped my car key into a candle and I didn’t really notice till I had already put my key in the car. I took it out after and cleaned the rest of the wax out and went in my ignition with a Q-tip and a bobby pin…(sorry) now it’s kind of just a greasy residue and I’m kind of stranded in Indiana visiting my mom and I have a 2 Hour Dr. home tomorrow. I’m 17 years old so it would be a lot of trouble for me to call a mechanic to look at literally nothing. Do you think I’m safe to drive home?
Or anywhere actually

Trying trying to change spark plugs and cylinder one boot looks different than the rest. It’s a 1998 Honda Honda Accord.

Had the death wobble for the first time on my way home and had to come to a complete stop for it to stop. Drove about 3 hours today and had the same thing happen. Noticed my truck was over heating, pulled over and put coolant in it since the tank was empty but the reservoir was full. Drove about another 2 hours and it over heated again, reservoir was empty. Put coolant in it, made it home but there is a small portion of the coolant missing.

Any ideas as to what’s going on? My fan has always ran when driving the truck so I’m wondering what the issue may really be.

2021 wrangler JL 3.6.

Just had my 2009 Mazda 2 1.3l serviced and the mechanic used 0w-20 when the specifications say to use 5w-30. I questioned him on it before he put it in and he insisted it’s fine and it doesn’t matter. I’m not sure whether to believe him.

Is it likely to cause any damage to my engine? Is it safe to use until next oil change or do I need to get it changed immediately?

Trying to get this old beater truck I got for free passed the safety on the cheap so I can transfer the title. Trying to do it on a budget. I know i could new shoes on here easy enough, and have the skills to do it, but it seems like there is a fair amount of pad left, but i'm worried that they'll fail me on those chipped corners. thoughts?

https://reddit.com/link/1x6yiez/video/3kuo3sh2bpvh1/player

2011 Hyundai Sonata 2.4L 4 cylinder. Noticed light smoke and burning smell coming from under hood. Opening hood saw smoke emanating from rear of engine, toward the line that plugs into exhuast at bottom of the rear of engine. What is that line - it looks damp/black at the connection. See pictures / video. Is this a manifold gasket leak? Coolant? Something Else? How critical is this to fix in a timely manner? Can I try to tighten the valve cover bolts?

Good afternoon folks! As the title says I’ve got an 07 Tahoe that won’t start after removing my father’s lights and siren from the vehicle. I was able to run it fine the next day with no issue, but after letting it sit overnight, the car will not come to life. I’ve included a video of be attempting to start the car.

My initial suspect was an automatic starter put into the car, but after disconnecting it, the issue still persists.

My intuition is telling me it’s a bad ground somewhere, but I would like to verify with others before diving any deeper.

any advice or further questions are more than welcome! Thank you for your time!

Hi everyone,
I received a brand-new SACHS clutch kit (part number 3000 951 790) today.
When I unpacked it, I noticed a green, viscous substance on the back of the dual-mass flywheel. It looks like it might be coming from inside the flywheel.
I've attached some pictures showing the substance and the areas where it appears to be leaking.
Has anyone seen this on a brand-new SACHS dual-mass flywheel?
I'm wondering:
• Could this simply be normal grease, or does it look like a leak?

• Could it be a manufacturing defect or damage caused during shipping?

**• Would you install this clutch kit as it is, or return it and request a replacement?**

I don't want to install it only to discover later that the flywheel is faulty.
Any advice or experience with SACHS dual-mass flywheels would be greatly appreciated.
Thanks in advance!

Edit: THANK YOU everyone. Went back and politely told them that that was unacceptable to charge me for a full hour of labor and after 30 minutes of politely advocating for myself, they refunded me $165. Thanks Reddit. ❤️

Also: to answer everyone. It was like $225 for labor, $100 for the belt and $50 in “fees” originally 💀

And yes… just the belt….

Can somebody please tell me what’s wrong 😭 my car been down for two weeks i honestly was just hoping it was the battery but I replaced the battery, and the lights came back on but when I tried to start it I heard one click. The dashboard lights stay on but my AC and power windows won’t work and the engine won’t turn over. I have had issues with the positive battery cable before. Could it be the cable, a bad ground, or the starter? Has anyone experienced this? I’m trying to figure it out without wasting more money on parts. Any advice is appreciated!

Car stopped running while driving, engine turned off had to pull over. Any idea what it may be ? Bad battery or starter ?

EDIT:

-Car doesn’t crank at all
-Electronics still work
-Fuel is working
-Dash lit up while driving, engine shut off and I had to coast the car to the side of the road
-When I try to start it up, half the lights go out including the in car rgb lights

Hi I’m a newbie diy, please help me

2007 toyota camry 175k miles

The pistol ring is extremely worn, it burns oil a lot. So the spark plug head is very dirty with burn oil, causing misfire

I was told me to get a non fouler to protect the spark plug head, but it create more clearance, push out the coil (see photos), and i cannot screw down the coil to fasten it.

What should i do? Thank you

Hi Reddit mechanics! For the last week ish my car has had some trouble turning over. It began just with cold starts but now it’s nearly every time I start it, I also tried to start it today after it sitting for about 2.5 hours and would not turnover on the first try. I have a 2023 Mazda CX-30 with about 57,000 miles. I drive it EVERY day, multiples time a day for 20-30 minutes each time. I just had my battery tested and they said it’s fine. I would hope it’s not my alternator or my spark plugs as my car is not that old and I take good care of it. Any thoughts?? (Service light in video is just for an oil change, also note, was driving my car about 15 mins before video was taken, it’s much worse in mornings or after sitting for 2+ hours)

It’s lifted off the ground by a jack

Honda civic 2007

05 Honda crv 4wd - I walked out to the car one night to find that it didn’t crank, one click to start and the electronics shut off in the car. I checked the battery voltage and it was a solid 12.5 volts or something like that, replugged it in and same results. I previously had a bad engine ground wire so I checked those and both have good continuity. My fuses are good too. I checked the power to the starter and the big constant 12v wire was getting 12v, then I unplugged the on/off signal wire and that was getting 12v when I turned the key to START. But then I plugged the signal wire back in and went to crank it again and it started. I know my starter is a little weak but I’ve heard much weaker ones start consistently

Any suggestions for what the problem is here? Is it possible I hit my started a little by accident and it was enough to get my failing starter working again or something? Or is it more likely that something was reset by unplugging the wire and plugging it back in?

I think I already know the answer but really, 2016 Honda Civic with the 1.5. Takes about 3.7 quarts, has right at about 4.2 in there... the level comes right to the top of the plastic on the stick, I haven't run the motor yet.

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Truck has 64k miles.

I was driving home after work and CEL came on, I could hear what sounded like a knock under acceleration and could smell gas.

Chev App showed exhaust emissions trouble.

Anyone have any insight on what it could be?

Trying to help a friend out. She said she took it to a shop and the shop couldn't get the part so they patched it. What part is leaking? I don't think it's just the fill neck, because it was at half a tank and leaking when parked and off, but leaked more when running.

On a warm start my car struggles to start. It takes a couple of tries and I need to gas it a little sometimes. It recently started happening more often. I’ve changed my pcv valve, evap purge valve, spark plugs, was told by a mechanic shop that the injectors were good. Car is a 2017 volkswagen golf gti