Throttle Problem, The Butterfly is sticking |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Throttle Problem, The Butterfly is sticking |
falconfp2001 |
Mar 28 2011, 07:55 PM
Post
#1
|
Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
I just got my FI back up and running but now I have a problem with the Throttle Body. My Butterfly has to much play now that I cleaned it and it sticks open just enough to make the idle surge.
I'm thinking I should get a stronger return spring but don't really know if that will solve the problem? Any ideas? thanks |
NJ914Guy |
Mar 28 2011, 10:16 PM
Post
#2
|
Member Group: Members Posts: 150 Joined: 30-December 10 From: Deptford, NJ Member No.: 12,546 Region Association: MidAtlantic Region |
How are the throttle cable and the pedal bushings? Just replaced mine and made a world of difference.
|
falconfp2001 |
Mar 28 2011, 10:25 PM
Post
#3
|
Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
Forgot to mention, 1971 1.7L Stock FI.
Thanks |
detoxcowboy |
Mar 28 2011, 11:21 PM
Post
#4
|
Senior Member Group: Members Posts: 1,294 Joined: 30-January 08 Member No.: 8,642 Region Association: Africa |
at your flaps, there is a doubled throttle spring for ford that works and fits perfect, it will be hanging in the emergeny fix it isle, that might help you get it to fully close and after a while it may work itself out.. plus you have that extra spring if ever one breaks.. it was working before you cleaned it, sometimes when things are clean they tend to grab easy.. just 2 cents.. mine was the other way around it tended to stick closed after refurb. and now its fine.. I chose the double throttle spring when mine tired out and failed on the freeway, i like the throttle feel better with the extra tension..
|
underthetire |
Mar 29 2011, 09:17 AM
Post
#5
|
914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
First, did you disassemble the throttle body? If you did, you must make sure you put the butterfly plate on the correct direction. They had a slight taper around the edge to allow them to close all the way. If you flip it, the sharp edge will hang up a little in the bore.
|
falconfp2001 |
Mar 29 2011, 01:11 PM
Post
#6
|
Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
Found a Spring, that seems to have that extra umph.
Idles fine now but may need to replace the TS. Doesn't accelerate smnooth from a stop and staying at steady speed tends to jerk instead of staying at a steady speed. Anyone have this issue before? I think it's the TS. I have another one that I can refurbish or swap out to see if there is a difference. thansk |
windforfun |
Mar 29 2011, 01:41 PM
Post
#7
|
Senior Member Group: Members Posts: 1,780 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None |
Found a Spring, that seems to have that extra umph. Idles fine now but may need to replace the TS. Doesn't accelerate smnooth from a stop and staying at steady speed tends to jerk instead of staying at a steady speed. Anyone have this issue before? I think it's the TS. I have another one that I can refurbish or swap out to see if there is a difference. thansk Yep. BTDT. How's the TPS (TS)? Is it positioned correctly? Is it worn out? Pop it's cover & look at the wiper(s) & copper traces. |
r_towle |
Mar 29 2011, 01:51 PM
Post
#8
|
Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
did you disassemble it to clean it?
Rich |
falconfp2001 |
Mar 29 2011, 04:32 PM
Post
#9
|
Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
No disassembly.
Just cleaned out the Air bleed inlet, advance and retard connections and the inside of the throat. tried to cleaned the edge of the butterfly as best I can. One Seems to have a small groove in the throat where the butterfly rests. Going to try and polish that out a little but if I can get a Throttle that works fine with just a little cleaning then I'm golden. |
zonedoubt |
Mar 29 2011, 04:55 PM
Post
#10
|
Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
If you're so inclined take it apart to clean it. It's not too complicated and will let you check the condition of the shaft and bearing surfaces.
I just did mine, read here. |
falconfp2001 |
Mar 29 2011, 05:24 PM
Post
#11
|
Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
If you're so inclined take it apart to clean it. It's not too complicated and will let you check the condition of the shaft and bearing surfaces. I just did mine, read here. Small problem with the 1.7L, shaft does not disassemble like a 1.8 or 2.0. The return spring is attached to the rear Engine tin. They look close. I don't think they are interchangeable though. |
falconfp2001 |
Mar 29 2011, 05:40 PM
Post
#12
|
Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
Does anyone know if the Throttle body is different from a 1971 1.7L to a 1975 1.7L? it would be great if they improved the Return Spring Setup.
|
dlee6204 |
Mar 29 2011, 05:43 PM
Post
#13
|
Howdy Group: Members Posts: 2,162 Joined: 30-April 06 From: Burnsville, NC Member No.: 5,956 |
QUOTE Does anyone know if the Throttle body is different from a 1971 1.7L to a 1975 1.7L '75 cars didn't come with 1.7L engines. |
zonedoubt |
Mar 29 2011, 11:46 PM
Post
#14
|
Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
|
Lo-Fi Version | Time is now: 13th May 2024 - 06:24 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |