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Dash vent not blowing air.


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Hello again. First I want to thank everyone that has been helping me on some prior issues. It’s nice to have a forum like this to get assistance and advice. 

I have a 1995 Esprit and 2 out of the 4 dash vents don’t blow any air out of them. I double checked and they are not closed I have the, all open  any suggestions?  Thanks again!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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That's my guess.  The little 'dryer vent hoses' ARE prone to being kicked off (or they just all off!)

Edited by CarBuff

Atwell Haines

'88 Esprit

Succasunna, NJ USA

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  • Gold FFM
9 hours ago, Shaider15 said:

No but I will check.  Thanks 

Having spent weeks staring at my heater box when doing the interior refurb, if recall correctly, the following are paired:-

  • binnacle outboard eyeball and binnacle top vent (dashboard)
  • inboard binnacle eyeball and passenger side eyeball vent
  • footwell vents
  • windscreen demist and rectangular vent

8 vents in total.

The vents you mention aren't paired. The hoses become hard over the years, and as has been said, can be kicked off. But they can also split, which isn't as apparent.

Margate Exotics.

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The vent hose can fall off either end. Either at the central heater core or up at the vents or binnacle in the case of the drivers side defrost vent.

Atwell Haines

'88 Esprit

Succasunna, NJ USA

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  • 2 weeks later...
On 15/07/2019 at 11:39, CarBuff said:

The vent hose can fall off either end. Either at the central heater core or up at the vents or binnacle in the case of the drivers side defrost vent.

Is there any diagrams to find where the vents hoses are?

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In this case, it SHOULD be a 'visual'.  Just assume the Lotus position, look at the central heater area under the dash, and assure that the 'dryer hoses' are attached. As noted, the ones that come adrift are often kicked asunder.

Atwell Haines

'88 Esprit

Succasunna, NJ USA

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  • 6 months later...

Well for the benefit of anyone interested I just discovered an obscure way the air-door operation could have failed. I have rebuilt my HVAC unit around a '95 S4S casing and found one of the small, white cam operated vacuum control valves got moved in its clamp just far enough to defeat its function. Looks as if Lotus originally wrapped them in a thin foam tape to ensure grip in the metal clamp and years on, as will happen, the foam has degraded. Whether the one in your car would have been bumped the tiny distance needed to fail is open to speculation, mine was budged in the course of the whole casing being handled for restoration on the bench. It only takes a slight shift of position for the cam function to be defeated.

Cheers

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  • 7 months later...

That problem of the vacuum valve vibrating up to eventually stop the cam operating it happened to me a couple of times. Thought  I had a much bigger issue but performing a bit of contorted arm surgery through the glove box resulted in a repair. I might try a blob of glue on a stick if it does it again.

 

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  • 2 weeks later...

No, I managed to pull back part of the glovebox interior to get my hand in (bit of a tight squeeze) and using a torch and a butchered screwdriver, managed to move it. Not too difficult and easier the second time once you have found out how to get to it.

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