No heat in cabin

[worldrallyoffrd]

hello guys,
My 86' 420 SEL has no heat coming through the vents, even when set on max, temp guage works so I know the engine is warm enough. The blower motor works because I just replaced that. One post said it could be the Auxiliary water pump, where-ever that is. Any ideas? maybe a hidden fuse ( I'm hoping ) or could it be a bad pump somewhere. Possibly bad vaccum in the climate control, or other problems with the buttons?

Where do I begin?

thanks in advance,
wror

[Brian Carlton]

We need a bit more info to steer you in the right direction.

1) When you say "no heat", does the blower work properly? Meaning, is the blower blowing full cold air?

2) If you drive the vehicle at speeds above 30 mph, do you then have any heat?

After suitable clarification, a proper direction can be established.