Diagnosing no heat

[irockidz28]

yesssss.. it was pretty gross lol my heat didnt work for shit for the second half of last winter...thought i was going to have to replace the heater core but we tried flushing it out and now it works ALMOST as good as new

[Formula413]

Cool I will do this soon. Once I have heat again then I can worry about getting A/C back

[BOTTLEDZ28]

Just make sure you dont put a ton of coolant all over the ground.

[Formula413]

Update: Did the heater core flush today and it worked pretty well. I'll have to wait until a cool night to know for sure but the heat felt nice and hot, and it was basically nothing before. It didn't seem like a lot of crud came out of it, just some murky looking coolant and a few tiny little chunks.

Since I had the coolant drained I also cleaned the coolant level sensor (works now) and did the throttle body bypass. Don't know what it's really worth but after driving the car around I could rest my hand on the TB, before it would have been too hot to do that.

I drove the car around for a while and it didn't overheat so I must have managed to get all the air out, I always hear about people having problems so I was a little bit worried. I just followed the instructions in the manual: crack bleeders, fill until bleeders are weeping, shut bleeders, fill to top of radiator, run engine for four minutes, refill. After driving it a few miles I had to top it off again (which I knew since my low coolant light works now) and I'm letting it cool now and then I'll check it again. Nice to kill three birds with one stone. Most of the remaining projects will probably be a lot more labor intensive.