Question about 1990 Chevrolet Corsica

1 Answer

1990 Chevy Corsica heat issue

I came across one of your answers to a question about a heating issue.  heres the link to it  well i have a very similar issue with my moms 90 chevy corsica. I can hear the blower motor working and the speed changes when i change the speed but when i change the selector from defrost to vent or anything the amount doesny change at all it barely blows out from any of the spots its supposed to. The air does heat up just isnt blowing right. I ssaw your answer to the other question was replace the heaster core but my mom had hers replaced not even a year ago and the air heats up so could it be that or maybe a vacuumn line issue? I've also been told it might be the diveter door in the heater box? Thanks alot, just trying to narrow it down without completely  tearing the car alot.

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 91 Answers

I think your on the right track with the vaccum/heater issue. Its not the core if its just not blowing out of the right vents. Find the plunger on the side of the hvac box that controls the selector door by squeezing the plunger by hand to see if it changes what vent it blows out of. If it does change when you do this, its a vaccum issue between the plunger and the vaccum bar. Trace the vac line from the plunger back to the bar, I bet you find your problem.

Posted on Mar 15, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

My 1995 chevy corsica is leakin ani and there's no

The Issue is most likely you're water pump radiator, or you're head gasket, I suggest you take it to youre local auto repair shop to clarify what the issue is.

May 20, 2011 | 1995 Chevrolet Corsica

1 Answer

1990 Corsica has no heat

The cheapest problem is usually bad thermostat...Be sure the water level is full...Also the control switch from cool air to hot air might be stuck...does this slide bar move with difficulty? Another inexpensive check is your radiator cap...This can be tested at your local parts store for free. The thermostat on your car is easy to locate...and replace with common tools. Be sure to reseal with gasket o-ring or flat gasket as designed.

Nov 24, 2010 | 1990 Chevrolet Corsica

1 Answer

1996 chevy corsica 2.2 liter engine. Coolant temp never reaches above one-quarter hot, therefore no heat. I've put in four thermostats, installed new radiator, disconnected the cooling fan, still no heat....

You may have a stopped-up heater core. It's a little radiator inside your dash; it's where the heat comes from. I don't understand why the temp gauge isn't reading any higher than that...

Jan 22, 2009 | 1990 Chevrolet Corsica

2 Answers

Can't find oil filter..

In order to find the oil filter turn your wheels all the way to the right. Then look by the passanger side front wheel it is right there. It is kind of hard to explain where exactly it is but when you got your wheels turned and just look a little you will find it.

Jan 15, 2009 | 1990 Chevrolet Corsica

1 Answer

Chevy corsica 94

fusible link is in line to the wiring generaly to the positive feed to the starter thiker than regular wire and wrapped in heat shrink test for continuity from one side to the other good luck let me know if this helps

Oct 07, 2008 | 1994 Chevrolet Corsica

Not finding what you are looking for?
1990 Chevrolet Corsica Logo

204 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides