924Board.org

garyj19 · Joined: 04 Sep 2005 Posts: 226 Location: Connecticut

as you may know, the heater fans do in fact lack. mine, doesnt work at all. is there any common issues with these that would make it work? all the heat i get into my car is from me moving, so when im at a stop my windows fog up. is it worth getting a used one from someone on the board, or buying a new motor and making my own fan so its strong?

also, when im moving, the heat will come out of the floor vents and the defrosters, fairly well at that, but when i switch the main vents off from DEFROST, cold, outside air comes in. whats the deal with this? ive searched some and seen that people have said that the cold air may pass over the heater core as oppsosed to through it, but i dont get why my defrosters and floor vents are nice and heated while the main vents arent. im perplexed.

kinda off topic from my original questions, but when i shift into reverse, some of the time it makes a grinding noise. i quickly back off and do it agian and its fine. yes, the clutch is all the way in. whats the deal?

another off topic-er. it may be just becuase the starter was installed wrong, but some of the times, i mean MOST of the time when i go to start the car, the starter will engage and make its whirring noise, but doesnt hit the flywheel and turn it over. its funny. my friend will be in the car with me sometimes, and itll happen, and he will say "what, is the battery dead?" as the fuel pump is running and the starter is whirring. it is quite humorous. anyway, itll take a few tries to get it going, but i havent noticed a pattern yet. ill try. this may or may not be a common 924 problem, but ive never heard of it, but maybe you mechanically enclined people know whats up.

sorry bout the long post

_________________
early 77 924 na

924RACR · Posted: Wed Oct 25, 2006 10:42 pm Post subject:

Reverse does not usually have a synchro in these cars. Later cars do have it, though.

Check to see if the heater fan is getting power; remove the screen cover under the hood and check for power and ground at the motor. If you do have power, then yes, likely need a new motor, and requires removal of the dash and everything to replace. PITA.

On the starter - sounds like the bendix drive isn't clean and lubricated - I'd recommend removal and cleaning/greasing.
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

Smoothie

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

As the others have said the center vents are not connected to the heat. In the later cars... 1982.5 on this changed as I recall but on the early cars the center was AC only.

The heater fan. Test it as Vaughan says and then look up threads on the heater fan. There is a much more simple fix to just replace the motor. No need to pull the entire dash out... as long as you do not mind cutting some of the plastic and putting in a replacement fan from Wal-mart or such.

On the reverse issue. Easy way to solve that. When you want to go into reverse... shift the car into 2nd gear first and then go directly from 2nd through neutral into reverse. This should stop the grinding. Same thing for 1st gear. Shift 2nd and then first.

Best of luck

Eric
eturbo924@yahoo.com
www.geocities.com/eturbo924
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

billmay34 · Joined: 04 Jul 2006 Posts: 41 Location: seattle, wa

My son and I did the heater fan replacement with the "walmart" fan approach and had excellent results.
in our case we went to Camper World and purchased a $30 12v fan made to plug into the lighter. we tore the device apart to salvage the fan and motor. at the same time we removed the dash and tore out the original a/c unit and did some wiring repairs for the guages, lights and such. while the dash was out we pulled the entire heater box.
with the heater box out, we split and cleaned the box, renewed the flapper sealing foam (tool box liner with spray adheasive), and we modified the walmart motor to fit the original motor mounts. the modification was a simple buildup of duct tape to bring the new motor to the same approximate diameter as the original motor.
once it was all clean and bench tested we reinstalled the heater box with renewed seals.
the results were great and we have heat to the floor and to the window once the dash vents are set to the closed position.
total time on the project was approximately 3 days in after hours work.

thanks to the board for the idea and encouragement!
_________________
Bill May
Seattle, WA
1991 MB 300E - 202,000 Miles
1977 Porsche 924 Martini - 85,000 Miles, Purple.

D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

Nice job Bill!

Pulling the dash is not as daunting a task as you might think, IMO. Just be sure you mark your wiring as you take it apart and make notes if you need to. This really gives you a chance to clean your grounds up and other wiring issues you may have. Your car will certainly thank you for it and will give you a few years of good heat, too.
_________________
'80 924 n/a SOLD

924RACR · Posted: Thu Oct 26, 2006 10:39 pm Post subject:

NEED PICS!!!
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

billmay34 · Joined: 04 Jul 2006 Posts: 41 Location: seattle, wa

how do i attach or post pictures? I do not see where this is possible in these postings....

any clues/suggestions?

Bill
_________________
Bill May
Seattle, WA
1991 MB 300E - 202,000 Miles
1977 Porsche 924 Martini - 85,000 Miles, Purple.

Smoothie · Posted: Fri Oct 27, 2006 9:21 am Post subject:

You need to upload your pics to some webspace, then either enter the link name in your post starting with "www." or if the link name ends with ".jpg" (and if your webspace provider allows direct links), you can enclose the link name with [img] and [/img] to have the picture appear in your post. If using just the link name without [img] and [/img], whoever's reading just clicks on the linkname to have the pic appear in a seperate window. Resize pics to a reasonable size like 800x600 or smaller before uploading.

I use free space on Yahoo Photos as webspace and provide just the link name.
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

I use photobucket. Seems to work okay.
_________________
'80 924 n/a SOLD

billmay34 · Joined: 04 Jul 2006 Posts: 41 Location: seattle, wa

cool, i am making a page on photo bucket and i will be posting again soon.

thanks for the help!

_________________
Bill May
Seattle, WA
1991 MB 300E - 202,000 Miles
1977 Porsche 924 Martini - 85,000 Miles, Purple.

billmay34 · Joined: 04 Jul 2006 Posts: 41 Location: seattle, wa

here is a test link for the photos...

http://i144.photobucket.com/albums/r177/billmay34/P1010085.jpg

or the album at: http://s144.photobucket.com/albums/r177/billmay34/

cool, more pictures to follow...
_________________
Bill May
Seattle, WA
1991 MB 300E - 202,000 Miles
1977 Porsche 924 Martini - 85,000 Miles, Purple.

924RACR · Posted: Sat Oct 28, 2006 6:24 am Post subject:

Hey, everybody, look, a purple Martini!!

_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

billmay34 · Joined: 04 Jul 2006 Posts: 41 Location: seattle, wa

i assume the previous owner was a Univ of Washington nut.

we like to call it the Love Bomb ala Austin Powers. ya have to love the bright orange carpet - too bad it isn't shag carpet!

Bill
_________________
Bill May
Seattle, WA
1991 MB 300E - 202,000 Miles
1977 Porsche 924 Martini - 85,000 Miles, Purple.

924RACR · Posted: Sat Oct 28, 2006 6:37 am Post subject:

LOL!

Yeah, you do know your car should look like this, right?
http://www.928porsche.net/productgraphics/martinirsview.jpg

_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype