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Volkswagen Jetta, Golf, GTI: 1985-1992 (A2) Heater core on 1990 Jetta


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Last Post: Jan 3, 2014 2:39 PM Last Post By: JGreene
mikejetta

Posts: 17
Registered: 06/05/07
Heater core on 1990 Jetta
Posted: Jul 19, 2007 5:35 PM
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Hello All
I need to replace the heater core on my 1990 Jetta Anybody have any experience with the job. I am hoping I don't have to remove the dash! Any tips would be appreciated.

Thanks

Mike
FKH161

Posts: 7,593
Registered: 12/29/05
Re: Heater core on 1990 Jetta
Posted: Jul 19, 2007 5:49 PM   in response to: mikejetta in response to: mikejetta
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Read the pdf that is posted in this thread...

http://tech.bentleypublishers.com/thread.jspa?forumID=40&threadID=26259&messageID=255959#255959

If the car has no a/c, remove the whole heater housing (slides
out from under dash).
VWX3

Posts: 283
Registered: 11/21/04
Re: Heater core on 1990 Jetta
Posted: Jul 19, 2007 6:01 PM   in response to: FKH161 in response to: FKH161
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Perhaps a bit late, but I beleive there is a recall for leaking htr core in your year where vw would replace it for FREE.
derdas

Posts: 3
Registered: 07/31/07
Re: Heater core on 1990 Jetta
Posted: Jul 31, 2007 1:09 AM   in response to: mikejetta in response to: mikejetta
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also late....but VW replaced my 1985 Jetta heater core for free (a current 1990 dealer estimate of $500 before I found out about the recall. As it was a health and safety recall (bursting, scalding water entering the cockpit of driver and passenger) perhaps you could be reimbursed by VW? Good luck.

PS...if you live in a warm climate you can jump (connect) the cold to hot hoses in the engine compartment before they enter the heater core. You will be without heat but save the hassle of dash removal and replacememt.
bvolks

Posts: 5
Registered: 05/06/07
Re: Heater core on 1990 Jetta
Posted: Aug 2, 2007 2:35 PM   in response to: derdas in response to: derdas
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My local dealer (Fredericton VW) doesn't honour the recall anymore. I have an 85, 89 and a 92 and they wouldn't replace it in any of them. Luckily it's not a real big job if it doesn't have AC and the whole dash doesn't have to come out. I can do mine in an afternoon easily.
JGreene

Posts: 63
Registered: 05/20/10
Re: Heater core on 1990 Jetta
Posted: Dec 14, 2013 11:55 AM   in response to: mikejetta in response to: mikejetta
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I replaced my heater core on a 1991 Jetta Carat a few years ago w/air conditioning.
Just an idea of what it involved.

The following needed to be removed
Gear shift top grip (not metal post) protect little wheel on top)to allow clearance for dashboard. Dash board basically needs to be pulled pulled to the seats.. Speakers stereo all out.
All little screws on dash and around spedometer/ odometer. Disconnect All electrical connectors behind dash
Speedometer needs to be disconned behind dash
Speedometer instrument panel needed to come out.
All switches headlight hazard etc levers for climate controls removed to remove dash
All bolts on the fire wall. Hidden screws near windshield wiper motorSmall Air hose grommet removed to allow air hose to follow dash
Steering wheel needs to come off
All harness wiring around the steering column and turn signal lever and cruise control. Anything connected
To the steering column
Center console needs to come out
Air ducts need to be disconnected under dash.
Water lines to heater core disconnected.
Heater core is basically behind the center console near the top of the dash. Two screws hold the heater core in place.
Getting everything to line up is tricky when putting back together, air ducts wiring etc

This is the way I did it because it seemed like the only way. But I got it fixed. One thing when I just did the head gasket and most of the coolant passages were blocked. Maybe this caused the heater core too much pressure.

Edited by: JGreene on Dec 14, 2013 11:58 AM

Edited by: JGreene on Dec 15, 2013 5:09 PM

Edited by: JGreene on Dec 15, 2013 5:42 PM

Edited by: JGreene on Dec 15, 2013 5:46 PM

Edited by: JGreene on Dec 15, 2013 5:50 PM

Edited by: JGreene on Jan 3, 2014 2:35 PM

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