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Strange Noises = "Play stump the mechanic"

OK, stopped by the shop yesterday to get the alternator belt tightened because it started squealing like mad when the fans turned on. After that was done I mentioned to my mechanic that the car had started making a strange sound that I could duplicate on demand but because of the way it happened I didn't think it a big problem.. took a while (and found an unrelated BAD thing along the way), but see if you can figure it out..

Here's the scenario..
84 NA, car in 1st gear, clutch out, NO throttle so it's just barely rolling along under it's own power. This noise starts coming from the right front wheel. It sounds similar to the click from bad CV joints only much louder. Very rhythmic.. click, click, pause, click, click, pause, repeat. Push in the clutch or accelerate and it stops. Doesn't do it in second. No change if turning right or left. Coasting in gear and no noise. Oh, and also does it in reverse.

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Old 09-30-2004, 12:12 PM
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wheel bearings?
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Old 09-30-2004, 12:47 PM
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That's a real stumper.

Did the noise end up coming from the right front wheel, or did it just sound like that?

My only guess would be a broken wheel (maybe 1 out of the 5 spokes is cracked) or a foreign object inside the tire, although the second one probably wouldn't make too much noise.
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Old 09-30-2004, 12:49 PM
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I'm guessing a belt that is still intact but has a separated section that slaps the something on the right side of the car in a certain RPM range. (Like it misses when the RPMs are too low and flies past when they are high.)
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Old 09-30-2004, 01:52 PM
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lunk nuts?
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Old 09-30-2004, 03:52 PM
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Ok, well it seem most are thinking like we were..

It's hard to tell exactly where it's is coming from because the car has to be moving to make the noise. All you can tell from trotting next to the car or hanging out the window is that it's coming from the area of the right front wheel. The belts where checked when they were tightened.

First, thing torque on the lug nuts.. check
Car on lift, idle, in gear and no noise so it doesn't appear to be drive train related.
Jack up the front end and wiggle right front wheel left/right and top/bottom, seems normal so it doesn't appear to be bearings, ball joints or tie rods.
Go around to the drivers side to do the same for comparison. Left/right.. no problem. Top/bottom.. WOAH!! The top of the wheel swings out ~ 2 inches!! Get under it and see that both bolts on the bottom of the strut are completely loose! Tighten and off we go to the alignment shop for a gratis alignment (they were the last ones to touch the car)

Driving back to the shop I tell him to see if that did it or if it's still making the noise.. he let's it slow to idle in first and.. click, click!

Back at the shop he's driving the car around trying different things. It happens that there is a fairly steep incline up to the bay with the lift so he pulls up, puts it in neutral, clutch out and lets it roll back.. click click!

So, here's what we have.
1) 1st gear, clutch out, idle = click
2) reverse, clutch out, idle = click
3) accelerate or higher than 1st = nothing
4) in gear, clutch in, coasting = nothing
5) neutral, clutch out, rolling = click
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Old 10-01-2004, 08:02 AM
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Put it on the lift.
Let it idle in neutral.
rotate the front right wheel by hand.
Rotate the rears by hand.

This should let you locate the source. My guess is that it is in the bellhousing.

Nigel
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Old 10-01-2004, 09:33 AM
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Quote:
Originally posted by Nigel Haslock
Put it on the lift.
Let it idle in neutral.
rotate the front right wheel by hand.
Rotate the rears by hand.
That might have found it if we rotated the one wheel you didn't mention...
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Old 10-04-2004, 08:40 AM
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o i c, you have the right wheel on the wrong side?
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1987 944 n/a 5spd. who remembers dial phones?.
'STOP FIXING THINGS ONE STEP BEFORE YOU BREAK SOMETHING ELSE"
Old 10-04-2004, 09:09 AM
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Ok, Ok......... we give up, what was it???
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Old 10-04-2004, 09:41 AM
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the steering wheel, or the nut behind the wheel?
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1987 944 n/a 5spd. who remembers dial phones?.
'STOP FIXING THINGS ONE STEP BEFORE YOU BREAK SOMETHING ELSE"
Old 10-04-2004, 10:01 AM
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Ok, totally stupid answer.... Cruise control unit!

That being said, anyone have any idea what would be causing it or is the thing toast? For now, it's just unplugged.

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Old 10-04-2004, 10:47 AM
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