Its cold outside, and my heat sucks - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

General Miata Chat A place to talk about anything Miata

LinkBack Thread Tools
Old 04-01-2012, 09:51 PM   #1
Junior Member
Thread Starter
iTrader: (10)
Join Date: Jun 2011
Location: Detroit Burbs
Posts: 300
Total Cats: 3
Default Its cold outside, and my heat sucks

Well, it just got cold here in Michigan again, and I noticed that the heat coming our of my currently stock '90 sucks *****. Turbo is in the works, but its a daily driver in the meantime.

I bought the car in December, drove it home 2400 miles (from LA to Detroit) and then parked it for the winter. I just started driving it a few weeks ago.

The car warms up normally according to the temp gauge, but the air coming out of the HVAC system is tepid at best. I don't think its a thermostat issue 'cause the temp gauge reads fine.

With the blower on full, I notice a significant loss in output from the vents when I change from cold to hot. Seems like the heater core is acting as a significant air restriction. Could this be clogged somehow?

I did some searching (mainly on, but there did not seem to be any answers there. I saw some people with a similar problem and the answer seemed to be to check the fresh air inlet for debris. I will do this, but it seems like a blocked inlet would cause the same restriction for both cold and hot, not only hot. Also, the car has A/C, and it seems like the A/C coils would catch the ---- before getting to the heater core.

Do I have to tear the entire dash apart to get at the heater core to clean it out?

Any ideas? I really don't want to ask the dorks.
Frank_and_Beans is offline   Reply With Quote
Old 04-01-2012, 10:34 PM   #2
Elite Member
iTrader: (2)
fooger03's Avatar
Join Date: Jan 2009
Location: Columbus, OH
Posts: 4,133
Total Cats: 188

You don't want to ask the dorks?

Because the heater core is performance related, right?
fooger03 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Hey everyone another n00b here Big_gumby Meet and Greet 80 10-05-2015 05:06 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 AM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 06:21 AM.