Any guesses why my passenger sides foot space waves when it rains outside? The water comes somewhere behind the glove box into the middle of the foot space. Windscreen seems to be ok, and I don´t find the place that could cause it... My car is Acura Integra 4dr ´90.

 

have sunroof?

 

could be bad body work, sunroof drain leak, or windshield seal leaking.

 

my 92 does the same thing

 

a/c condensation???? just a thought.

 

Its Your Heater Core.....go To Any Shop And They'll Tell You Thats Your Problem.....very Simple To Fix Too.

 

Could be the heater core, but I doubt it.........there would be coolant on his floor and his car would probably be running hot or even overheating. "TegManG-SR" is right, the tube under the dash that drains his A/C condensation to outside the car is leaking/pinched off/clogged and is getting the passenger floor wet.

 

It Can Be But Most Time It Is The Heater Core And The Car Dosent Neceseraly Run Hot Unless Most Of His Coolant Has Been Drained But Hey It Is Defenetly One Or The Other So You Should Try One And If Thats Not It Try The Other.

 

Yeah my Chrysler New Yorker had the same problem. Heater Core. But it certainly isn't easy I mean on that car I would have had to disassemble the whole F'ing dash. I bypassed the heater core to temporarily fix the problem. Just take the tube going into the heater core and the tube coming out of the heater core and connect them. I drove around in the winter time freezing my fucking ass off.

 

what happens is cold coolant comes from your radiator. It goes into your engine. The heat from your engine is transferred to the coolant (heat travels hot to cold). The coolant hose leaves your engine and then goes into the heater core where it would normally be used to heat up the inside of your car via a fan blowing the hot air. If the heater core is hot and somehow cold water splashes it or something it will crack or leak. Many years of expanding and contracting will cause the heater core to do this as well. Bypass the heater core if you can do without heat. Otherwise do what you have to to replace it. I am not sure how difficult it is in a 90 teg.