Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Feb 2002
Location: Chalfont Pa
Posts: 1,501
Throttle not returning to idle?

When I blip the gas the idle takes a few seconds to return to normal. What could be causing this?

Old 02-03-2004, 01:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
What kind of 911? Year, intake, etc.
__________________
ANSWER PRICE LIST (as seen in someone's shop)
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50
Old 02-03-2004, 01:13 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
vash's Avatar
 
Join Date: Sep 2003
Location: in my mind.
Posts: 27,289
Garage
Send a message via AIM to vash
damn dude you beat me to this question. mine does it to. but not always. i monkeyed with my pedal cluster, i am planning on making sure i didnt run the clutch cable too close to my throttle cable. let's see what the smart guys say...

cliff
__________________
poof! gone
Old 02-03-2004, 01:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
echrisconnor's Avatar
 
Join Date: Dec 2001
Location: Boulder, CO
Posts: 809
Garage
Return spring on throttlle - by the linkage in the engine compartment?

Deceleration valve - you could plug the vacuum line?

Many other things too, but this is just my first guesses.
__________________
'76 911 Carrera 3.0
Old 02-03-2004, 01:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Jun 2003
Location: Chelmsford, MA
Posts: 872
My car does that. I bought new bearings to rebuild the pedal cluster as a first resort.

If you reach down and pull the pedal back up, does it go back down right away? Mine does.
__________________
1968 911L
2004 Dodge Dakota SLT Plus
Old 02-03-2004, 01:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
vash's Avatar
 
Join Date: Sep 2003
Location: in my mind.
Posts: 27,289
Garage
Send a message via AIM to vash
yea, i rebuilt my pedal cluster too. i was just thinking i did something wrong.
__________________
poof! gone
Old 02-03-2004, 01:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Join Date: Jun 2001
Location: Northern CA
Posts: 430
Done clutch work lately?

I always seem to get the clutch cable twisted up with the throttle linkage in the tunnel which causes the throttle to stick/hang.....
__________________
Mark
'88 Carrera GPW Sunroof Coupe
'82 SC Targa (RIP)
Old 02-03-2004, 01:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Feb 2002
Location: Chalfont Pa
Posts: 1,501
car is a 1978sc with a three liter
Old 02-03-2004, 02:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Jun 2000
Location: Los Osos, CA
Posts: 101
Try removing (and plugging) the vacuum line to your de-acceleration valve.
__________________
Graham Archer
83 911SC Cab
Old 02-03-2004, 02:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Did you get the memo?
 
onewhippedpuppy's Avatar
 
Join Date: Mar 2003
Location: Wichita, KS
Posts: 27,855
Just to join the club, I'm having this problem too, I was going to start by cleaning and lubing all the linkage ball joints, any recomendations on the type of grease?
__________________
Matt J.
10 E63 AMG
Past: 911T, 911SC, Carrera, 951s, 955, 996s, 987s, 986s, 997s, BMW 5x, C36, C63, XJR, S8, Maserati Coupe, GT500, etc
Old 02-03-2004, 02:06 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Nov 2002
Posts: 1,955
Yep, first suspect should be the decel valve.
Old 02-03-2004, 02:11 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Moderator
 
Join Date: Dec 1999
Location: Porsche Money Zen
Posts: 1,701
Send a message via ICQ to old_skul
In my case, it was the throttle rod joint on the transmission. Try detaching the rod on the pedal side at the elbow, and moving it (with the car off). If it's stiff and has trouble returning to idle position, you may need to disassemble it and clean it or possibly replace the bushing in there. I lubed mine to little effect from the outside; finally had my mechanic replace the bushing.
__________________
Mark Szabo
1986 911 Targa 3.2 (I will miss you)
1985 Scirocco 8V (I will not miss you)
1986 Dodge B150 Ram Van (I can't believe I got $200 for you)
1987 Escort 5-speed 1.9 RIP
Old 02-03-2004, 02:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered User
 
}{arlequin's Avatar
 
Join Date: Jun 2003
Location: DC/Boston
Posts: 5,500
Garage
What is a deceleration valve? Where is it? Which one is the vacuum line? Is it one of the hoses that's always loose from the shroud? (sorry for the onslaught)

I am also having this problem... fairly small (if you can consider stuck throttle potential.) Returns to normal if I pull up the throttle w/ my foot. Was just considering adding another/stronger return spring but it seems like a band-aid fix.

How far do I have to dig in to reach and clean all the linkages? (Are there any crucial hidden ones?)

thanks in advance.
__________________
dave
1973,5: one two thweeee!
no.don't.stop.
Old 02-03-2004, 02:26 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
echrisconnor's Avatar
 
Join Date: Dec 2001
Location: Boulder, CO
Posts: 809
Garage
This will tell you what the decel valve is and where it is located.

http://members.rennlist.com/jimwms/CIS/CIShome.html

As for bushing lubrication. Follow the linkages. Pull apart at every junction you can find and make sure nothing's sticky. Also check all your springs to make sure they're in place and pulling properly. It's helpful to have another person to work with you throug this and a good time to make sure you're getting full throttle when you floor the pedal. I wasn't and it made a huge difference after some new bushings and tweaking.
__________________
'76 911 Carrera 3.0
Old 02-03-2004, 02:35 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Did you get the memo?
 
onewhippedpuppy's Avatar
 
Join Date: Mar 2003
Location: Wichita, KS
Posts: 27,855
Yeah, but what to use? WD 40, moly grease, what's best? Also, what bushings are there in the throttle linkage? In this case it's on a Webered 70T.
__________________
Matt J.
10 E63 AMG
Past: 911T, 911SC, Carrera, 951s, 955, 996s, 987s, 986s, 997s, BMW 5x, C36, C63, XJR, S8, Maserati Coupe, GT500, etc
Old 02-03-2004, 02:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
vash's Avatar
 
Join Date: Sep 2003
Location: in my mind.
Posts: 27,289
Garage
Send a message via AIM to vash
just fixed mine. it was as old skul said. the linkage joint rod coming off the tranny. i pulled mine partially off and lubed it will some silicone grease. fixed!

cliff

__________________
poof! gone
Old 02-03-2004, 04:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 05:18 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.