Bad squeal in the power steering and A/C

Tiny
AARON FOKUS SWITZER
  • MEMBER
  • 2002 MAZDA PROTEGE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
Okay, first off let me clarify I am trying to help a friend fix her car here. For starters, there is a bad squeal in the belt that goes around the power steering, A/C and the drive pulley, though it is just been replaced and it is nice and tight. So I am not sure why it is squealing but it is causing other issues as well. When it is squealing it is consequently not adequately turning the other belt that works the alternator and in turn causes charging issues for the battery. In addition she just called me and said that now her heater randomly blows cold for a bit, then will heat back up then later blows cold again. I was suspecting that the water pump going bad could cause all of this to happen, but given that changing the water pump on this car is a very elaborate process and beyond my skill level. I was hoping someone could either confirm my suspicion or tell me another option that could cause all of these issues to happen at once.

Thank you in advance,
Aaron
Do you
have the same problem?
Yes
No
Saturday, April 22nd, 2017 AT 5:57 PM

6 Replies

Tiny
CARADIODOC
  • EXPERT
The first thing to consider is a squealing belt is caused by the belt walking sideways across a pulley as it goes around it. That is caused by a pulley that is tipped or turned, usually an idler pulley with a worn bearing. Most pulleys start life painted black. Look for one where the belt is riding off-center and some shiny silver is peaking out right beside the belt. Also, sight down on the belt from on top and look for any pulleys further down where the belt is sticking out to the side and is not in line with itself on the other pulleys.

With the second observation of the belts not running fast enough, a good suspect is the harmonic balancer. Harmonic balancers have a heavy cast ring bonded to the center hub. On yours, that outer ring is the drive pulley for the belt. With the extra stress, the bonding can break free, then the ring slips on the hub and doesno t run the belt. Look for signs of the bonding material squeezing out or appearing to be melted. If you cannot tell that way, scratch a chalk line across the front of the assembly. Check if half of the line has shifted after running the engine.
Was this
answer
helpful?
Yes
No
Saturday, April 22nd, 2017 AT 11:09 PM
Tiny
AARON FOKUS SWITZER
  • MEMBER
Thank you, I will check those options tomorrow hopefully. I will be back though I am sure. Lol
Was this
answer
helpful?
Yes
No
Saturday, April 22nd, 2017 AT 11:13 PM
Tiny
AARON FOKUS SWITZER
  • MEMBER
If it is one of those problems you suggested, Ia m assuming that in turn could affect both the water pump and alternator yes?
Was this
answer
helpful?
Yes
No
Saturday, April 22nd, 2017 AT 11:17 PM
Tiny
CARADIODOC
  • EXPERT
Yup, but problems with the heater controls is more likely to be caused by unstable system voltage due to the slowly-running generator, not the water pump. If the water pump is running much too slowly, you will be having overheating issues.
Was this
answer
helpful?
Yes
No
Saturday, April 22nd, 2017 AT 11:38 PM
Tiny
AARON FOKUS SWITZER
  • MEMBER
Thank you, I will look into it.
Was this
answer
helpful?
Yes
No
Saturday, April 22nd, 2017 AT 11:40 PM
Tiny
KEN
  • ADMIN
Please let us know what happens.

Cheers, Ken
Was this
answer
helpful?
Yes
No
Tuesday, April 25th, 2017 AT 11:38 AM

Please login or register to post a reply.

Recommended Guides