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1993 Mazda B2200 over heating

Tiny
WAYNESANDERS333
  • MEMBER
  • 1993 MAZDA B2200
  • 4 CYL
  • 2WD
  • MANUAL
  • 155,000 MILES
I have changed the waterpump, thermostat, hoses andput new coolant in the truck but it still heats up. No oil in the coolant either. I can turn the heater on and it cools right down. What could it be?
Saturday, August 28th, 2010 AT 12:32 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Check to see if radiator fan(s) coming on properly
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Saturday, August 28th, 2010 AT 12:36 PM
Tiny
CHRIS42012
  • MEMBER
  • 4 POSTS
You might need to to have the radiator flushed.
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Friday, September 24th, 2010 AT 2:57 PM
Tiny
SONOFIGOO
  • MEMBER
  • 2 POSTS
Radiators do get plugged which contribute to overheating problems because water will not cool and flow. You check this by draining a bit of water/coolant and look for standing water in the radiator tubes. It should not remain in the tubes if you lower the water level. If water in the tubes you'll want to take it out and have it boiled and pressure flushed. You can get enough pressure from a garden hose flush. Also check to see if the radiator fins are coroded if made from copper. They need to be in top shape to dissapate heat. If bad you are better off replacing the radiator than investing in a repair or flush.
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Sunday, September 26th, 2010 AT 1:43 PM

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