85 - No Heat
I guess this is a heating 101 question. Its a new used car and I just got it running and have driven it a few times and there is no heat. Its like there is no heater core in there. It blows the same temp whether the heater or a/c is selected. The air blows cold (its pennsylvania). There is not even a hint of heated air.
I was going to back flush the core and see if anything comes out. But, before I do that, I thought I would see if anyone had a suggestion. The Engine warms up - runs at 193 when driving; it can get up to 220 when idling in the driveway. The fans come on at some point I took the TB off to clean it and just mod'd the throttle body while I had it off - coolant bypass - so no coolant runs through the TB. Both heater hoses get hot The Control valve opens and closes (no vac - vac) depending on heat setting and heat or a/c setting switch (no vac to valve, its open ; vac to valve, its closed) Fan blows in all settings low high Air blows out of the right vents depending on setting - defrost, heat, or ac Cold -> Hot switch moves freely left to right (cable is connected) I removed the center panel and removed the radio and heater/ac switch panel and all the vac lines are connected up Rear window defrost is working I removed the passenger side carpet and everything was up there. I couldnt see the door which is opened/closed by the cold/hot slider but the cover is up there. So, the only thing I can of is that core is passing coolant through a "main" bypass or something and that the finned area is blocked. I never had the misfortune to have a heater core problem so I'm not sure how they are built. What am I missing? |
blend door
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Originally Posted by oldalaskaman
(Post 1580047979)
blend door
I'll check. Yeah, being in Alaska ... I'm sure you are intimately familar with the heating system, the cold start injector ... best oil viscosity to use, coolant mixtures and all that. I appreciate it. Thanks a lot Tim |
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