What's the buzz?

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  #1  
Old 07-11-03, 08:32 AM
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What's the buzz?

1992 Ford Ranger XLT
4.0 litre / 6 cyl.
4 x 4 electric shift<---------- that puppy never worked
170,000 km. (150,000 miles?)

Yesterday, while waiting in the drive-thru at a burger place, a loud buzzing/grinding sound from the front of the vehicle happened about 10 or 11 times.

The sound lasted about 5 seconds each interval.

I felt a vibration under my feet when the buzzing/grinding was going on. As we left the burger place, I accelerated 2 or 3 times and the sound happened again as I stepped on the gas.

By the time I pulled over and had a look under the hood, the sound had stopped. I did notice a slight burning smell for a couple of seconds. Couldn't be sure but I think it had an electrical odor to it.

The only other symptom I could see in the cab was a slightly higher than normal water temperature while all this was going on.

I've posted here about this beast before but just to refresh everyone's memories:

1) I had a rebuilt transmission put in last year. Maybe a questionable job because twice now the pan bolts have magically come loose & leaked most of the fluid. Shifting has been slightly erratic so I took it back twice for band adjustments.

2) As I said earlier, the 4 x 4 worked for a short time but then quit. Replies from you guys here seem to indicate that I have a dead shift motor. As I understand it, this motor is located under the driver's side area. Could it have been making all the racket? Shorting out?

Any other (cheap ;-) possibilities? If I had money or a stick of dynamite, believe me, I would take care of the problem ;-)
 
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  #2  
Old 07-11-03, 08:40 AM
Joe_F
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Tough to say really without hearing it....keep an eye, or errr ear on it and try to pinpoint it a bit better.

On the 4x4 problem, Knuckles had posted a link to a website where it has the procedure to clean the brushes in the 4WD actuator which may bring the 4WD back to life.
 
  #3  
Old 07-11-03, 11:45 AM
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Originally posted by Joe_F
Tough to say really without hearing it....keep an eye, or errr ear on it and try to pinpoint it a bit better.
Ok, I snooped around under the hood this morning. When I checked the power steering pump, I noticed that the fluid had a burned smell to it. Could this be the source of the noise?

On the 4x4 problem, Knuckles had posted a link to a website where it has the procedure to clean the brushes in the 4WD actuator which may bring the 4WD back to life.
I did a search for Knuckles and 4x 4 problems but I didn't find the link you mentioned. Do you remember where you saw this?
 
  #4  
Old 07-11-03, 11:55 AM
Joe_F
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Look it up on the web in google.com. I'm sure there are technical articles on this subject. Try "Cleaning 4WD actuator brushes Ford Truck" or something similar when you search.

Usually when the 4WD isn't used much, the brushes glaze like that.

Is the noise like a groan? Ford power steering pumps tend to be pretty piss poor.
 
  #5  
Old 07-11-03, 12:03 PM
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Originally posted by Joe_F
Is the noise like a groan? Ford power steering pumps tend to be pretty piss poor.
No, this was a frighteningly loud buzzer sound. Like an electric doorbell-type buzzer.
 
  #6  
Old 07-11-03, 12:35 PM
Joe_F
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It could be the seat belt buzzer, again tough to say without hearing it myself.

Text doesn't lend itself well to sound. LOL
 
  #7  
Old 07-11-03, 04:45 PM
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What type of hubs does your truck have? If they're auto-engaging (meaning locked all the time) then it could be the solenoid that engages the front axles..???
 
  #8  
Old 07-12-03, 08:23 AM
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Originally posted by msargent
What type of hubs does your truck have? If they're auto-engaging (meaning locked all the time) then it could be the solenoid that engages the front axles..???
Yeah, I think they're the auto-engaging type--push button on dash for 4 x 4. The sound was an awful lot like a solenoid going nuts come to think of it. And it jives with the location of the sound (under my feet, towards the front axle).

Thanks Sarge :-) (you 2 Joe :-)
 
  #9  
Old 07-12-03, 04:07 PM
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It's a place to start looking.. Let us know what you find out!
 
  #10  
Old 07-12-03, 04:14 PM
Joe_F
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Original poster:

Try this link for cleaning/servicing the actuator:

http://www.glue.umd.edu/~singletn/web/pages/tcase.html

I think it answers the question of how to clean the actuator .

As MSA said, let us know what you find .
 
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