Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Rear Hatch

Thread Tools
 
Search this Thread
 
Old 11-04-2018, 01:30 AM
  #1  
Bill99
Instructor
Thread Starter
 
Bill99's Avatar
 
Join Date: Mar 2017
Posts: 109
Likes: 0
Received 12 Likes on 10 Posts
Default Rear Hatch

My rear hatch on the 1990 Porsche 928 S4 unlocks but will not open automatically. Do you think that it may need new "hydraulic" lifts?
Old 11-04-2018, 01:32 AM
  #2  
Speedtoys
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 13,582
Received 1,034 Likes on 623 Posts
Default

No, those dont do that.

What is the age and physical status of your lower hatch insert?
Old 11-04-2018, 01:57 AM
  #3  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 28,293
Received 2,469 Likes on 1,389 Posts
Default

after answering the previous question.
Did you check the two fuses for the hatch motor
Old 11-04-2018, 10:28 AM
  #4  
Bill99
Instructor
Thread Starter
 
Bill99's Avatar
 
Join Date: Mar 2017
Posts: 109
Likes: 0
Received 12 Likes on 10 Posts
Default

The hatch motor works. When you push the button to open the hatch you can se e the motor working and the hatch unlocks. You then can open it by hand but it does not open automagically (lol). I assume that it should do that. The lower hatch insert is original.
Old 11-04-2018, 10:43 AM
  #5  
merchauser
Three Wheelin'
 
merchauser's Avatar
 
Join Date: Jan 2017
Posts: 1,799
Received 39 Likes on 20 Posts
Default

sounds like its working properly
Old 11-04-2018, 11:31 AM
  #6  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 28,293
Received 2,469 Likes on 1,389 Posts
Default

OP ,
are you suggesting that when the button is operated,
then the hatch latching mechanism runs, the the hatch unlocks.
( up to this point this is normal operation of the hatch)

Then the hatch should raise to the open position?

If so then this was not a design option to have the hatch go to fully open.

This option is used on newer cars that also include bumper position sensors,
and new computers to discern all the sensors info. and of course the required raising device.

That said the hatch can be raised by hand and will stay in the raised position unless the hatch shocks are weak,
Then the hatch can close on its own,
NOTE the hatch shocks are 100 LB shocks
Old 11-04-2018, 02:21 PM
  #7  
Bill99
Instructor
Thread Starter
 
Bill99's Avatar
 
Join Date: Mar 2017
Posts: 109
Likes: 0
Received 12 Likes on 10 Posts
Default

Thanks so much.
Old 11-05-2018, 11:41 AM
  #8  
Wisconsin Joe
Nordschleife Master
 
Wisconsin Joe's Avatar
 
Join Date: Jan 2013
Location: Kaukauna Wisconsin
Posts: 5,926
Received 303 Likes on 232 Posts
Default

As was noted, the hatch doesn't lift up on it's own.

You need to put fingers under the lip and lift.

However, it shouldn't take very much effort. And it should stay up all the way.
If it takes a lot of effort to lift, or if it sags after being lifted, the struts may be 'tired'.

The gas struts wear out over time.

Roger has the correct ones (for both hood & hatch) at a reasonable price.
Old 11-05-2018, 05:26 PM
  #9  
Bill99
Instructor
Thread Starter
 
Bill99's Avatar
 
Join Date: Mar 2017
Posts: 109
Likes: 0
Received 12 Likes on 10 Posts
Default

Who is Roger?
Old 11-05-2018, 05:32 PM
  #10  
merchauser
Three Wheelin'
 
merchauser's Avatar
 
Join Date: Jan 2017
Posts: 1,799
Received 39 Likes on 20 Posts
Default

Roger is going to be your new best friend! he owns 928sRus and the website is http://www.928srus.com/

honest and knowledgeable, he has anything you may need. you will put him on your speed dial 817 430 2688
Old 11-05-2018, 05:56 PM
  #11  
Wisconsin Joe
Nordschleife Master
 
Wisconsin Joe's Avatar
 
Join Date: Jan 2013
Location: Kaukauna Wisconsin
Posts: 5,926
Received 303 Likes on 232 Posts
Default

Ignore the website. It lists a few things, but nowhere near his total inventory.
Call or email with what you want.

He has everything that's available.

He posts as "ROG100" on here.

Very, very nice fella. Knows and loves these cars (has like 10 of them) as well as anyone on here.
Old 11-07-2018, 04:38 PM
  #12  
Wisconsin Joe
Nordschleife Master
 
Wisconsin Joe's Avatar
 
Join Date: Jan 2013
Location: Kaukauna Wisconsin
Posts: 5,926
Received 303 Likes on 232 Posts
Default

Ok, for anyone who looks at this thread and wonders:

"Just how is the hatch supposed to open?"

I was just at the grocery store and put the bags in back (yes, I use my 928 as a 'grocery getter' )

Unlocking the hatch makes it pop up 'just a bit'.
Putting my fingers in the gap and lifting, it takes minimal effort to lift it. Two fingers is adequate.
Once it gets just above 'level' (with the back maybe an inch or two above the roof), it lifts the rest of the way all by itself.

Closing is the exact opposite.
Minimal effort to pull it down. Once it gets to level (or maybe a bit above) it drops the rest of the way and latches itself.

Struts came from Roger and have been in since spring of 17.



Quick Reply: Rear Hatch



All times are GMT -3. The time now is 11:33 PM.