no heat no coolant stream

[dwenz]

Hello guys working on a 2000 ls v8 ... couple weeks ago thermstat was found to be stuck shut and temp guage went hot ... At that time while doing thermostate change and bleeding prosedure had heat in car when setting to 90 during bleed process Now I don't . No heat at all on any setting. Also not getting steady stream of coolant from bleeder at idle or any rpm consistently just sputters, its hot but not a steady stream. No heat at highway speeds either. Checked power to aux.pump its there,also can hot wire pump it runs. Car does not over heat just has no heat.

 

[joegr]

Covered here quite a lot. It almost always comes down to a cracked degas bottle and/or cracks in the rest of the plastic cooling system parts. This lets air in and prevent the system from pressurizing. You can't bleed the air out if it won't pressurize.

 

[dwenz]

Yes I've read most all, but I only have a stream of coolant after its closed a bit then I open it its hot but only streams for a bit then quits.seems liiebitvonly expelling the expanded coolant then stops realisticly shouldntbitvrun a steady stream till it runs out? And seems like air pocket would be deleted and therefore heat in ncar even if for short period of time would it not?

 

[joegr]

So, if it isn't the common problem that everyone has sooner or later, what do you think that it is?

Your problem is consistent with cracked degas and/or cracked plastic parts. Yes, there's a one in a few hundred chance that it is something else, something not seen here before.

 

[dwenz]

im not trying to be difficult or dought your expertiese Im concerned about no flow from bleeder or at least steady long term flow. So am I to understand that because of crack no pressure and no pressure means leader won't show coolant flow as described in bleeding instructions.

 

[joegr]

Yes.