Mazda Pickup Trucks While Mazda may not be known for their trucks, they have always produced quality reliable trucks for both hauling cargo, or simply crusing.

B2500 heater/AC frustration.

Old 05-16-2017, 08:33 PM
Junior Member
Thread Starter
Join Date: May 2017
Location: Texas
Posts: 8
Default B2500 heater/AC frustration.

OK got an issue I've never rnacross and need some help, here's the story.
2000 Mazda B2500 son's first truck. Few years ago the heater core started leaking so a mech. by-passed heater core. After that AC won't work so son just dealt with it. I have the truck now, been parked a couple years so recently I decided to get it going for an extra truck. Replaced the heater core, thermostat, diverter, poteinometer and repair some vacuum lines. Truck runs good but no heat. The funny thing I can understand is the AC always seems to run even when in heat. Tonight I rechecked the vacuum lines, isolated between the switch and first plug and it would not hold vacuum, then from the plug at the firewall into the engine, still wouldn't hold vacuum. All the lines seem good. I unplugged the AC condensor and an obvious raise in interrior temps from the ducts. Why would the AC run when not in AC but heat? TIA for any suggestions.
Old 05-17-2017, 10:33 AM
Cusser's Avatar
Senior Member
Join Date: Mar 2007
Posts: 456

200 is same as a Ford Ranger truck, ask at those sites.
Related Topics
Thread Starter
Last Post
Mazda Pickup Trucks
11-20-2017 07:39 PM
Mazda MPV
08-27-2009 11:20 PM
General Tech
04-02-2008 08:16 PM
Mazda Pickup Trucks
02-12-2006 11:52 AM
Mazda Pickup Trucks
02-08-2006 08:38 PM

Thread Tools
Search this Thread
Quick Reply: B2500 heater/AC frustration.

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.