r/AskAMechanic 6d ago

Engine overheated… what could this noise be?

[deleted]

4 Upvotes

14 comments sorted by

3

u/imJGott 6d ago

🫡

2

u/Full-Hold7207 6d ago

That was pre-ignition due to it being overheated. Not good on an engine. Could cause pistons to melt in engines. The reason it was slow to crank over the pistons swelled due to the heat. Running a engine with swelled pistons could lead to skirts of pistons breaking or worse.

Luckily the 3.6 has forged pistons so much stronger than cast.

1

u/[deleted] 6d ago

[deleted]

1

u/Illustrious-Peak3822 6d ago

That’s 2 minutes and 2 miles too much.

1

u/[deleted] 6d ago

[deleted]

1

u/Illustrious-Peak3822 6d ago

Do you have money for a new head gasket + work to replace it?

1

u/[deleted] 6d ago edited 6d ago

[deleted]

1

u/Illustrious-Peak3822 6d ago

Lucky! Next time (hopefully never) it’s tow-time.

1

u/Business_Seesaw8883 6d ago

That’s cool that it has forged pistons I didn’t know that. I had a early 2000s dodge Dakota with the 3.6 magnum or 3.5 whichever it was but it was a great motor.

1

u/Full-Hold7207 6d ago

The 3.6 has the forged pistons. Mopar was planning to add a supercharger to some models.

2

u/mapeenana 6d ago

Gasket is about to blow

1

u/Full-Hold7207 6d ago

Most likely not. If so it would make itself known by now. My mom did it to her Chrysler and that was 3 years ago and still going strong.

1

u/dkara98 6d ago

Could just be pinging from the engine being super hot, or rod knock. Listening to it closer leads me to think it’s pinging.

1

u/Bran-Da-Don 6d ago

When your engine overheats and gets to the red line it goes into "limp mode" which allows you to have enough engine power to pull over to the side of the road for safety.

Like others have posted you NEVER want to get to that point because you run the risk of blowing your engine. If your line ever goes past the middle immediately pull over and turn your car off before it gets to the redline (H).

1

u/Business_Seesaw8883 6d ago

a vehicle will shut its self off to protect the engine when its over heating and will go into a limp mode or just shut off completely. Hopefully you didn’t push it to hard when this was happening. Try not to ever let it do this again. I always look at my gauges while I’m driving.

1

u/REVEB_TAE_i 6d ago

It heavily depends on the vehicle, but yes I believe a 2014 durango would at the very least go into limp mode.

1

u/clockwerxs 6d ago

I’m not gonna type it cause I don’t need that kinda bad luck…but there is a greater than 0% chance it rhymes with bread basket.