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idler

  1. Idler pulley missing and bolt thread knackered?

    General BMW Discussions
    Hi So one of my pulleys is making a noise so I figured I would change it all, idler, both tensioners and the belts. Went to do it and found I had no idler pulley!! The bolt is there so I figured I would put the new one on. Went to tighten the bold and as soon as it comes to the last tighten...
  2. Do I need to take the air filter box out to replace tensioner and idler pulleys?

    BMW 3 Series Forum - Technical Talk on the BMW E46
    As in the subject - most DIYs do it though I can't see why it's needed and therefore would try to get away without doing it
  3. My 2001 320i Doesn't Have an Idler Pulley!

    BMW 3 Series Forum - Technical Talk on the BMW E46
    So I've been getting some squeel under the bonnet when the car is first started up, for about 3-4 minutes, so I'm thinking it could be the idler pulley or one of the two tensioners. So I get to the belts, and stare at them for like 2 minutes, "where tha *** is my idler pulley?". It's just not...
  4. Alternator or idler pulley noise?

    BMW 6 Series - Tech Talk E24,E63,E64,F12,F13
    BMW 630 E63 84k miles I was getting a noise from either the alternator bearing, drive belt tensioner pulley or idler pulley when warm and on tick over. I thought it was the tensioner so have replaced it but it did not cure the noise. (It was worn so I'm ok with that). However I would like to...
  5. 320d 136BHP - Snapped idler pulley!!! Help please.

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Following on from the black plastic filings in the engine bay thread... I just went to move the car at 11pm tonight in the rain. Turned it on and something went bang. Turned it off straight away and popped the bonnet. One of the serpentine belt idler pulleys has snapped off. Not the pulley off...
  6. Bmw 330d e90 fan belt tensioner idler tapping and can see it moving when running????

    General BMW Discussions
    Hi I have a Bmw 330d e90 and when on tick over you can hear a tapping noise when I looked I can see that the fan belt tensioner is moving but when I hold a screwdriver on it to keep it still the tapping doesn't stop so not 100% sure that it is this. Any idea what could be?
  7. E46 320d Idler Pulley Replacement

    Technical Guides for the E46
    Replaced the idler pulley on my 2002 E46 320d today, which turned out to be a 20 minute job made easier by a couple of things. One, use a long ring spanner of 24mm to turn the tensioner rather than a socket. The socket can slip or burr the nut, which makes future jobs harder. The ring spanner...
  8. 2004 320i M54B22 - no idler pulley?

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi all, I just had a quick look at the main belt drive on my 320i and I noticed I do not have an idler pulley. Is this normal? I thought all M54s in the E46 had the same setup and every photo i've seen has the idler pully. In the diagram attached mine looks like the top one, so I'm missing...
  9. E46 330 idler advice

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi, I'm hoping somebody can help me identify a part please. I've been advised that I need an idler. Apparently I've got a double idler and I need the non moving one which I presume is the top one on the following link Search results for: 'Idler' Excuse my ignorance but is this the part I...
  10. 2004 E46 320d bearing noise / rattle from main drive belt area - is it tensioner, idler, etc? In Ethiopia, need help!

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hello, my 2004 E46 320d has done only 32,000kms and has an intermittent bearing noise and also occasional rattle (separate noise) from main drive belt area. when the rattle happens, it's quite loud but doesn't last long - a few seconds. The bearing noise seems a little louder / clearer on the...
  11. 2001 E46 318ti compact idler pulleys

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi This is my first post and im in the process of diagnosing a whining noise coming from my engine. I think i have narrowed it down to the idler pulley on the belt tensioner. What i would like to know is are both the idler pulleys for the belt system the same? and is this the correct one of the...
  12. 1995 bmw 318is can i leave the idler pully off

    BMW 3 Series Forum - Technical Talk on the BMW E21
    i have bmw 318 and have asqueal i cant get rid of. when i went to the bmw breakers to get new idler none of his cars had one they were m44's and mine is m42 now if i remove the idler it is quiet but would it be ok to do this
  13. 1995 E36 318iS - Modifying alternator drive belt idler

    BMW 3 Series Forum - Technical Talk on the BMW E21
    i have a 318is m42 i went to get some parts from a breaker who only had m44 and i noticed ther was no idler on the drive belt on eny of them so iv looked at pics on net they are the same could i remove the idler on my m42 and fit a smaller belt ;)
  14. 1994 E36 325i coupe - Idler and tensioner pulleys

    BMW 3 Series Forum - Technical Talk on the BMW E21
    I think my new belts have put the old pulleys under more stress and I'm fairly certain one of them is making a noise. I assume the idler pulley can just be un-bolted? Can the pulleys on the tensioners be replaced or do you need the whole unit? (talking both the drive belt tensioner and the air...
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