R50/53 Power loss randomly on hill
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2nd Gear
Joined: Mar 2015
Posts: 108
Likes: 5
Power loss randomly on hill
Hi everyone I have a 2002 Mini Cooper s, so this has happened to me two or three times now, I will be going up a hill, the same hill each time, and rarely, if it’s raining, I’ll be going up the hill and my cars power will drop significantly and then come back. I’d this the belt slipping on the super charger pulley? I do have a reduction, but it did it before I did this, and I got the smaller belt. One of the times it did it, I heard a squeal. Does this mean my tensioner is shot?
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2nd Gear
Joined: Mar 2015
Posts: 108
Likes: 5
It has 145,000 but it’s very well kept up with. And it has a brand new belt and sc pulley. But no I have not replaced the crank pulley. I was worried it could be my tensioner, but with the new belt on there, the tensioner is extremely tight, I could barely get the belt on it, so I don’t see how it could slip, and. I would think after doing a change the symptoms would have changed? I don’t know. And it’s wxtremely rare it’s only happened two or three times. But I don’t know of anything else that would squeal while simultaneously dropping power
2nd Gear
Joined: Jun 2005
Posts: 105
Likes: 25
It has 145,000 but it’s very well kept up with. And it has a brand new belt and sc pulley. But no I have not replaced the crank pulley. I was worried it could be my tensioner, but with the new belt on there, the tensioner is extremely tight, I could barely get the belt on it, so I don’t see how it could slip, and. I would think after doing a change the symptoms would have changed? I don’t know. And it’s wxtremely rare it’s only happened two or three times. But I don’t know of anything else that would squeal while simultaneously dropping power
1st Gear
Joined: Oct 2018
Posts: 47
Likes: 2
From: Washington
If it's a random occurrence and not everywhere you drive, it could be a number of things. I would check to make sure all air lines are sealed properly, also the bypass valve spring on the throttle body should have good spring to it. If it doesn't, then your bypass valve isn't working right and you will have a great loss of power. Check out this video for more information on how to replace your bypass valve:
If you really do need a new harmonic balancer/crank pulley, I have one in perfect condition that I replaced with a higher performance pulley. I can sell you my used one for a lot cheaper than a new one. Just PM me if you find that yours needs to be replaced.
If you really do need a new harmonic balancer/crank pulley, I have one in perfect condition that I replaced with a higher performance pulley. I can sell you my used one for a lot cheaper than a new one. Just PM me if you find that yours needs to be replaced.
2nd Gear
Joined: Jun 2005
Posts: 105
Likes: 25
If it's a random occurrence and not everywhere you drive, it could be a number of things. I would check to make sure all air lines are sealed properly, also the bypass valve spring on the throttle body should have good spring to it. If it doesn't, then your bypass valve isn't working right and you will have a great loss of power. Check out this video for more information on how to replace your bypass valve: https://www.youtube.com/watch?v=oc-Q...DVJ2h&index=25
If you really do need a new harmonic balancer/crank pulley, I have one in perfect condition that I replaced with a higher performance pulley. I can sell you my used one for a lot cheaper than a new one. Just PM me if you find that yours needs to be replaced.
If you really do need a new harmonic balancer/crank pulley, I have one in perfect condition that I replaced with a higher performance pulley. I can sell you my used one for a lot cheaper than a new one. Just PM me if you find that yours needs to be replaced.
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2nd Gear
Joined: Mar 2015
Posts: 108
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Trust me, it's your crankshaft pulley. I have a 05 S & that's exactly the symptom I had. Got to the point where it separated and threw 1688 code which was the nail in the coffin. Fix it now before you get left by the side of the road & need a tow home. Go to YouTube and search for "Mod MINI" videos. He has the exact video that addresses this repair that you need to make ASAP!
If it's a random occurrence and not everywhere you drive, it could be a number of things. I would check to make sure all air lines are sealed properly, also the bypass valve spring on the throttle body should have good spring to it. If it doesn't, then your bypass valve isn't working right and you will have a great loss of power. Check out this video for more information on how to replace your bypass valve: https://www.youtube.com/watch?v=oc-Q...DVJ2h&index=25
If you really do need a new harmonic balancer/crank pulley, I have one in perfect condition that I replaced with a higher performance pulley. I can sell you my used one for a lot cheaper than a new one. Just PM me if you find that yours needs to be replaced.
If you really do need a new harmonic balancer/crank pulley, I have one in perfect condition that I replaced with a higher performance pulley. I can sell you my used one for a lot cheaper than a new one. Just PM me if you find that yours needs to be replaced.
2nd Gear
Joined: Jun 2005
Posts: 105
Likes: 25
wow thanks everyone for the responses! I guess I wouldn’t have expected it it be the crank pulley but, I may go ahead and pick up a new one at some point soon. Thanks everyone! And on the note about the bpv, I checked it and it works great, when the cars idling I can’t even move it.
PS; at least check all pulleys so you know when the "sound" isn't right & time to make a plan to address it.
Old, nasty, cheap, ill designed POS harmonic balancer that lasted 13 plus years and 126,500 miles. Glad its gone and a nice new hi tech fluid filled pulley is installed.
6th Gear
Joined: May 2007
Posts: 1,305
Likes: 117
From: Gulf Coast FL
The crank pulley on my 1965 Nova is original.
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