sonoriansZ

iTrader: (2)

So I put in a new motor in back in September with 75k, the motor only has about 78k on it right now. Drove it for 2 months and I had to replace the radiator because it was leaking fluid due to a crack in the radiator. After replacing that, about 3 days later it started making this really loud noise. I thought it was maybe a belt but I took off all the belts and turned it on and it still made the noise. So I went with the idea maybe it was my water pump but I replaced that and it still makes the noise. Its coming from the front of the motor on the driver side. There's no check engine light on and it doesnt struggle to crank over or anything so Im kind of stuck right now. I would love to take it to nissan but the closest dealer is 1.5 hrs away and i will not take it to a shop here where I live. So anyone can help i would really appreciate it. thanks for your time.

here is a video of the noise:

DCJodon

A/C compressor? Remove the A/C belt (don't put it back on), turn it on and see it's still making that noise. Could be a pulley or tensioner.

sonoriansZ

iTrader: (2)

i did all that. i cant wrap my head around it. ive replaced all my belts too and it still does it.

Cali-Darkness

iTrader: (35)

Sounds like some sort of restriction in your cooling system.

Edit: Did you check to see if coolant is properly flowing through the radiator? Are you 100% sure you properly routed the hoses? Did you check the radiator for plugs that may have needed to be removed prior to installation?

sonoriansZ

iTrader: (2)

well i flushed out the radiator before i put it in. also im not having overheating problems.

stuartc323

Dude check your oil pump, you should be nowhere near that high of oil pressure for a cold start, cold starts for any normal engine should be 40psi to 80psi depending on the car. It sounds like your car is trying to turn over and your getting metal on metal rubbing because car has no oil, I had this same sound right before my engine seized up on my S-10

sonoriansZ

iTrader: (2)

thats what i was thinking cause that pressure was way to high for a cold start. i also did a oil change because i wanted to see if it was metallic but it was fine. but ill take a look at the pump this weekend.

datsunHEAD

iTrader: (17)

i second oil pump,keep us in the loop

stuartc323

yeah man have it checked at a mechanics shop, this would be a great time to upgrade to a better oil pump like the nismo pump or the revup pump only if thats the problem, hopefully thats the problem

sonoriansZ

iTrader: (2)

thanks guys. ill have a mechanic look at it. ill keep you guys updated.

WSchli1672

Well for my .2 worth, I would normally say the whine has to do with the belts to the coolant system, buuutttt, with the oil pressure gauge reading, forget it and ditto on the oil pump. Lastly if that doesn't do it, put it on a 4 wheels up trailer and take it to the Nissan and let them put the computer on it and find out exactly. (Honestly 1 1/2 hr drive to and 1 1/2 hr from is cheaper than the alternative at this point).

stuartc323

Yeah thats what i was thinking too, but as soon as i saw his oil gauge i was like holy crap batman, its gonna blow lol

Listen to this man OP, especially whats in bold, its the only way