[05 Elise] Rainstick-like noise from the dash when turning - LotusTalk - The Lotus Cars Community
 
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post #1 of 18 (permalink) Old 07-12-2015, 10:05 AM Thread Starter
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[05 Elise] Rainstick-like noise from the dash when turning

When my AC is on and I make a right turn, a rainstick-like sound comes from under the dash. Googling the problem brings up a lot of similar issues with other cars, but nothing for the elise.

According to these guys on the Yaris forum (Air Conditioner Noise & Leak? - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site), the issue is a plugged drain tube.



How would I access this tube on the elise?

Has anyone else experienced this and been able to fix it?
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post #2 of 18 (permalink) Old 07-12-2015, 10:41 AM
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It's a black piece of wire conduit (... because Lotus) on the passenger's side front of the car, exiting near the front suspension A-arm pickup.

https://www.lotustalk.com/forums/f101/whats-tube-28416/

To access the top of the tube (HVAC box) is a brutal job (search resistor pack replacement) but the drain end of the tube should be visible if you want to try to run a wire through it or something.

I would also double check that the HVAC compartment drain holes are drilled correctly: https://www.lotustalk.com/forums/1496844-post3.html

If the noise persists, I would suspect a piece of gravel in the chassis somewhere, although I guess if it's only happening with the A/C on your drain theory is probably accurate.
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post #3 of 18 (permalink) Old 07-12-2015, 01:26 PM
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Mine just started doing this. So funny someone else just started having the issue too. Only thing I have done in a while is change the dashboard out with a carbon fiber one. I am going to show this post to my shop, MC Customs, and hopefully they will be able to work it out. They always do!
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post #4 of 18 (permalink) Old 07-13-2015, 05:56 AM Thread Starter
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Quote:
Originally Posted by bri3d View Post
It's a black piece of wire conduit (... because Lotus) on the passenger's side front of the car, exiting near the front suspension A-arm pickup.

https://www.lotustalk.com/forums/f101/whats-tube-28416/

To access the top of the tube (HVAC box) is a brutal job (search resistor pack replacement) but the drain end of the tube should be visible if you want to try to run a wire through it or something.

I would also double check that the HVAC compartment drain holes are drilled correctly: https://www.lotustalk.com/forums/1496844-post3.html

If the noise persists, I would suspect a piece of gravel in the chassis somewhere, although I guess if it's only happening with the A/C on your drain theory is probably accurate.
I'll see what I can do about the drain plug. It seems to be working though, it drips a ton after a long drive in the florida heat with the ac on.

Were the drain holes a recall item or do all cars have them?
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post #5 of 18 (permalink) Old 07-13-2015, 07:37 AM
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I'll see what I can do about the drain plug. It seems to be working though, it drips a ton after a long drive in the florida heat with the ac on.

Were the drain holes a recall item or do all cars have them?
They were a service bulletin item. If you're sure the noise only happens with the A/C on, I'm not sure how they could be the culprit - if there's water in there, it'll be in there all the time. But it's probably still a good idea to have them done anyway as you really don't want to deal with replacing the blower motor controller/resistors if they get wet.
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post #6 of 18 (permalink) Old 07-13-2015, 07:54 AM Thread Starter
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Originally Posted by bri3d View Post
They were a service bulletin item. If you're sure the noise only happens with the A/C on, I'm not sure how they could be the culprit - if there's water in there, it'll be in there all the time. But it's probably still a good idea to have them done anyway as you really don't want to deal with replacing the blower motor controller/resistors if they get wet.
Yeah, it's only when the AC is on.

Another interesting note, the noise is louder on higher ac settings. You can hear it at 1, but its louder at 3.
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post #7 of 18 (permalink) Old 07-15-2015, 09:44 AM Thread Starter
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One more note. The noise immediately goes away when I turn the AC off.
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post #8 of 18 (permalink) Old 07-15-2015, 11:11 AM
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Maybe you have leaves in your blower box??? The factory seal can be horrible. Mine was just awful and doing no good, so I had to redo the seal when the service bulletin was being done.

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post #9 of 18 (permalink) Old 07-15-2015, 12:12 PM
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I had this problem but it turned out to be birdseed that a mouse or something stored up there during the winter months when the car was in storage. When I takes turns now little seeds hit my shins.
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post #10 of 18 (permalink) Old 07-15-2015, 01:42 PM Thread Starter
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I had this problem but it turned out to be birdseed that a mouse or something stored up there during the winter months when the car was in storage. When I takes turns now little seeds hit my shins.
Your problem was dependant on whether or not the AC was on?
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post #11 of 18 (permalink) Old 07-15-2015, 04:25 PM
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Sorry I didn't clarify. Happens all the time.
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post #12 of 18 (permalink) Old 07-15-2015, 05:26 PM
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I had about 100 empty nuts in my dash on my last Elise. Found them doing the switch pack replacement.

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post #13 of 18 (permalink) Old 07-15-2015, 06:11 PM
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Mine only happens when my blower motor is on. Doesn't matter if I have the AC on or off. As long as its blowing out air, I get the noise.
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post #14 of 18 (permalink) Old 07-15-2015, 06:28 PM
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post #15 of 18 (permalink) Old 07-15-2015, 07:11 PM Thread Starter
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Originally Posted by vaughn View Post
Mine only happens when my blower motor is on. Doesn't matter if I have the AC on or off. As long as its blowing out air, I get the noise.
I haven't tested this. I suspect it's the same for me but I'll try tomorrow.
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post #16 of 18 (permalink) Old 07-15-2015, 07:29 PM
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I haven't tested this. I suspect it's the same for me but I'll try tomorrow.
Yea just turn the AC part off but the blower fan still on.. it'll still happen.
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post #17 of 18 (permalink) Old 07-22-2015, 07:21 PM
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Quote:
Originally Posted by highlow View Post
When my AC is on and I make a right turn, a rainstick-like sound comes from under the dash. Googling the problem brings up a lot of similar issues with other cars, but nothing for the elise.

According to these guys on the Yaris forum (Air Conditioner Noise & Leak? - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site), the issue is a plugged drain tube.



How would I access this tube on the elise?

Has anyone else experienced this and been able to fix it?
Any updates?
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post #18 of 18 (permalink) Old 07-22-2015, 08:24 PM Thread Starter
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Any updates?
Nope. Haven't tried anything yet.

It's not a huge priority for me either, so no major push to get it done.
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