Jump to content
SAU Community

Loud Screahing When Engine Is Started

shyr33

By shyr33,
in Engines & Forced Induction

 Share

Recommended Posts

shyr33 Community Regular

shyr33

Posted
Posted

Hey Guys,

There is this loud screaching noise when the car hasnt been started for a few hours or in the morning. Now i know the noise is coming from one of the recently replaced water pump, ac or power steering belts and goes away after a few seconds and stays quiet when im driving. Im thinking the mechanic either didnt tension the belt enough or to much? Or does this usually happen for the first few times with new belts once they are changed. Any feedback is appreciated thanks

femno Grand Master

femno

Posted
Posted

Yeah its a belt. You can also buy a product from CRC i think, its a non slip sticky spray on stuff for belts. But you shouldnt need it. Just tighten them. Thats what i did when i had the exact same prob as you.

shyr33 Community Regular

shyr33

Posted
  • Author
Posted

Thanks for the reply guys, its my regular mechanic so they will no doubt fix it for free i just thought maybe it would go away by itself after a while but looks like ye they didnt tighten it enough.

Thanks again

Duncan Grand Master

Duncan

Posted
Posted

could also be caused by a small person caight in the engine bay. anytime you start the car it hurts so they scream.

That or a loose fan belt....tighten up the alternator adjuster

Taso84 Mentor

Taso84

Posted
Posted

most probable that the belts have been put on too tight. U can adjust the tension in a few minutes with a shifter,

PM me for details on how to do this, I had this problem too when putting new belts on, they usually do it a bit tight to allow for stretching over time

shyr33 Community Regular

shyr33

Posted
  • Author
Posted

Thanks for the feedback guys, i did adjust the alternator adjustment screw a little bit because i thought it was a little loose, then took it back to the mechanics and he said its fine because he didnt want to tighten it to much because it will put to much strain on the water pump and bearing if it was to tight. Maybe some grease or something got onto the belt while it was changed. Ill give it over the weekend to fix itself, if not back to the drawing board on monday i think hrmmm

justin911 Grand Master

justin911

Posted
Posted

ya same, my starter motor used to make a screeching noise only when it was cold. i took her out and slapped some grease in, hasnt done it since.

might even be the starter motor

mine was makn a screachin noise, still havent got it fixed.

  • 4 months later...
Crash. Enthusiast

Crash.

Posted
Posted

hey guys, im having the same issue atm with this. I put some no slip spray on it and this stopped the noise from happening as much, but it only lasted about a week or 2...

can anyone point me in the right direction of what screw i need to tighten, with maybe an image or something? Or where to locate it, any help would be awesome

foznice Veteran

foznice

Posted
Posted

As someone said they stretch over time. So when you first put them on, and adjust them to the right tension, they shoudl be all good, then as they over the next couple of hundred k's, you redadjust them again.

How does grease help the problem? I can see how grease would stop the noise (by lubricating), but I can't see the grease making the belt "grip" the pulley better. Unless it gets absorbed into the rubber over time and moistens it up or something?????? Kind of like, when you drive with wet shoes, it's slippery at first, but after it starts drying out it gets to a REALLY grippy stage....

_x_FiReStOrM_x_ Community Regular

_x_FiReStOrM_x_

Posted
Posted

Avoid using belt grip sprays.. they usually dont do much if anything at all.

If the belt is tensioned enough get a stick of dri-lube, and run it along the belt (carefully!) while the engine is idling until the noise stops.

Even the slightest bit of grease off the mechanics hands, while fitting, is enough to make the belt noisy.

tacker Mentor

tacker

Posted
Posted

If you can twist the belt about 3/4 of a turn is a good place to start and very very small adjustments until it stops making the noise.

Check out what a tight belt will do and i have done a OEM and N1 in the same way.

post-28646-1181502917_thumb.jpg

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      $5 Clock upgrade for R32 GTR

      By GTSBoy · Posted

      The attached document is fine. I just downloaded & opened it.
    • ToothDR32
      $5 Clock upgrade for R32 GTR

      By ToothDR32 · Posted

      Hello, sorry for being late to join the discussion, but my clock just died on me.   Ive tried to look at Michaels digital clock repair.docx and it doesnt work maybe the file has expired.   Please let me know if you can re upload it or take some youtube videos to show us how to get the clock installed? thanks
    • MissMintyR33
      R33 persistent issues. P/steering and lag/misfire

      By MissMintyR33 · Posted

      I thought that might be the case, thats what I'll start saving for. Thanks for the info 
    • jtha7
      Strange issue RB25DET wont start

      By jtha7 · Posted

      Ps i found the below forum and it seems to be the same scenario Im dealing with. Going to check my ECU coolant temp wire tomorrow    From NICOclub forum: s1 RB25det flooding at start up Thu Apr 11, 2013 7:23 am I am completely lost on this. Car ran perfectly fine when I parked it at the end of the year. I took the engine out and painted the engine bay, and put a fuel cell with an inline walbro 255 instead of the in tank unit I had last year. After reinstalling everything, the engine floods when the fuel pump primes. if i pull the fuel pump fuse it'll start, and as soon as I put the fuse back in it starts running ridiculously rich. I checked the tps voltage, and its fine. Cleaned the maf as it had some dust from sitting on a shelf all winter, fuel pressure is correct while running, but wont fire until there is less than 5psi in the lines. The fuel lines are run correctly. I have found a few threads with the same problem but no actual explanation of what fixed it, the threads just ended. Any help would be appreciated. Rb25det s1 walbro255 fuel pump nismo fpr holset hx35 turbo fmic 3" exhaust freddy intake manifold q45tb q45 maf   Re: s1 RB25det flooding at start up Fri Apr 12, 2013 5:07 am No, I didn't. I found the problem though. There was a break in one of the ecu coolant temp sensor wires. Once it was repaired it fired right up with no problems. I would have never thought a non working coolant temp sensor would have caused such an issue.
    • jtha7
      Strange issue RB25DET wont start

      By jtha7 · Posted

      Hi sorry late reply I didnt get a chance to take any pics (my mechanics on the other side of the city) but the plugs were fouled from being too rich. I noticed the MAF wasn't genuine, so I replaced it with a genuine green label unit. I also swapped in a different ignitor, but the issue remains. I've narrowed it down a bit now: - If I unplug and reconnect the fuel lines and install fresh spark plugs, the car starts right up and runs perfectly. Took it around the block with no issues - As soon as I shut it off and try to restart, it won't start again - Fuel pressure while cranking is steady around 40 psi, injectors have good spray, return line is clear, and the FPR vacuum is working. It just seems like it's getting flooded after the first start I unplugged coolant sensors to see if its related to ECU flooding but that didnt make a difference. Im thinking its related to this because this issue only started happening after fixing coolant leaks and replacing the bottom part of the stock manifolds coolant pipe. My mechanic took off the inlet to get to get to do these repairs. My mechanics actually just an old mate who's retired now so ill be taking it to a different mechanic who i know has exp with RBs to see if they find anything. If you have any ideas please send em lll give it a try. Ive tried other things like swapping the injectors, fuel rail, different fuel pressure regs, different ignitor, spark plugs, comp test and MAF but the same issue persists.
×
×
  • Create New...