Knock coming from under passenger side behind engine

AMY MAES

MEMBER
2002 DODGE RAM
V8
4WD
AUTOMATIC
120,000 MILES

When driving my truck there’s a noise that comes from under it that sounds like knocking. It’s from the passenger side and it’s mostly when the car is in drive and I don’t have my foot on the gas really hard. It’s only when it’s a little bit on the gas. I will upload a video.

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Friday, November 1st, 2019 AT 2:52 PM

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

Unfortunately, that sounds like a piston slap. Meaning an internal engine issue. I would get this addressed ASAP because right now it may only need a piston. If it fails then you will need an engine. It could just be a bearing on the crankshaft but either way we need to get it addressed because if you just let it go, you will need an engine.

The first test you need to do, is drain the oil and look for metal. I imagine you will see quite a bit.

Let me know if you have questions.

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Friday, November 1st, 2019 AT 8:28 PM