Brian1973
Member
- Joined
- May 29, 2010
- Messages
- 129
- Reaction score
- 0
- Points
- 16
- Location
- Cincinnati, OH
- Vehicle Year
- 1991
- Make / Model
- Ford
- Transmission
- Manual
My '91 Ranger has been making some belt noises since last fall... started softly and has grown louder recently. I first thought maybe it was the radiator fan clutch making the noises so I just let it continue... when I started trying to find the culprit a month ago, I figured it might be belts, so I replaced the serpentine and seemed a little better. Still sounded like I had some birds under the hood though, so I then figured maybe one of the idler pulleys was going bad... after getting to the point that it definitely was coming from the crank pulley and thinking I might also have some weird internal rod noise, i noticed the crank pulley was a little loose after pulling belts and running engine... tried to tighten crank bolt but it was good.... hmmmm, so then I figured it had to be the 4 bolts tightening the pulley to the balancer... sure enough!!!! What is happening here? Anybody see this before?
I wonder after putting this used engine in this truck a few years ago whether I perhaps missed putting washers on the 4 bolts? I can't believe I did because I was meticulous.... but the bolts still seemed torqued onto the pulley when I took them off... so thinking maybe they were bottomed out and not tight enough against the pulley? I ended up looking to see if I had another pulley but no go.... local yard MIGHT have one off an Aerostar but I decided to just reinstall and used a washer and lock washer as well as blue locktight to make sure bolts don't move, tightened the pulley back up in the correct orientation through the original hole and will see if the problem presents itself again in the future... I swore I was having some rod knocking using a stethoscope on the oil pan but now it's gone, so it must have been somehow the pulley knocking back and forth creating the bigger holes? Not sure how or why? Do know the A/C seemed to make the chirping under the hood worse so wonder if it got worse because the A/C has been used more recently and the pull from the compressor along with slightly loose pulley exasperated the issue....
Anyone seen this before!?!? Weird!
I wonder after putting this used engine in this truck a few years ago whether I perhaps missed putting washers on the 4 bolts? I can't believe I did because I was meticulous.... but the bolts still seemed torqued onto the pulley when I took them off... so thinking maybe they were bottomed out and not tight enough against the pulley? I ended up looking to see if I had another pulley but no go.... local yard MIGHT have one off an Aerostar but I decided to just reinstall and used a washer and lock washer as well as blue locktight to make sure bolts don't move, tightened the pulley back up in the correct orientation through the original hole and will see if the problem presents itself again in the future... I swore I was having some rod knocking using a stethoscope on the oil pan but now it's gone, so it must have been somehow the pulley knocking back and forth creating the bigger holes? Not sure how or why? Do know the A/C seemed to make the chirping under the hood worse so wonder if it got worse because the A/C has been used more recently and the pull from the compressor along with slightly loose pulley exasperated the issue....
Anyone seen this before!?!? Weird!
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