jackoholic
New Member
- Joined
- Mar 1, 2010
- Messages
- 31
- Reaction score
- 0
- Points
- 0
- Location
- San Jose, CA
- Vehicle Year
- 1999
- Make / Model
- Mazda
- Transmission
- Manual
Hello folks,
I'm working through some cooling issues on my B4000 at the moment. The issue suddenly presented itself with no prior warning. I was driving through town and noticed that my heater wasn't blowing warm air despite being set well into the hot range. Shortly after that the temp needle climbed high enough to set off the 'check gage' light without actually going into the red zone.
A short time after I noticed this (20 seconds?) the heater started blowing hot air again. The temp needle IMMEDIATELY went back into the normal range. Then began a cycle of hot air, cold air, hot air with the temp needle swinging back and forth with the changes in the heater air.
Got home checked coolant, added some, and burped the system with some instructions I found on here (thanks big jim!). Problem still there but now with check engine light for #6 misfire. There is no fast leak in the system (no coolant under the truck at any time, if even if its a seep its a slow seep?)
Does not overheat at idle only when moving under load. I don't know how old the t-stat is so I decided to replace it just to knock that outta the way. Opened draincock on rad and it its draining very s....l...o...w...l...y. (as in count each drip). LOTS of sediment.
Questions..
1. Anyway to flush the system faster?
2. How likely is a blockage my problem?
Thanks guys
I'm working through some cooling issues on my B4000 at the moment. The issue suddenly presented itself with no prior warning. I was driving through town and noticed that my heater wasn't blowing warm air despite being set well into the hot range. Shortly after that the temp needle climbed high enough to set off the 'check gage' light without actually going into the red zone.
A short time after I noticed this (20 seconds?) the heater started blowing hot air again. The temp needle IMMEDIATELY went back into the normal range. Then began a cycle of hot air, cold air, hot air with the temp needle swinging back and forth with the changes in the heater air.
Got home checked coolant, added some, and burped the system with some instructions I found on here (thanks big jim!). Problem still there but now with check engine light for #6 misfire. There is no fast leak in the system (no coolant under the truck at any time, if even if its a seep its a slow seep?)
Does not overheat at idle only when moving under load. I don't know how old the t-stat is so I decided to replace it just to knock that outta the way. Opened draincock on rad and it its draining very s....l...o...w...l...y. (as in count each drip). LOTS of sediment.
Questions..
1. Anyway to flush the system faster?
2. How likely is a blockage my problem?
Thanks guys