throttle body sticking, on return |
|
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 body sticking, on return |
jimkelly |
Oct 18 2008, 07:05 AM
Post
#1
|
Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
i was driving around yesterday - when all of a sudden my engine reved up extreme - i shut down and pulled to the side of the road - i figured my throttle cable snapped or my return spring popped off.
so i looked under the hood and all looked ok and then i pulled up the carpet to see what was going on near my gas peddle but all looked ok. drove home about 5 miles after gettting a push to get started - different problem - al the way in 3rd gear, shutting engine down when i hit 60mph, made it thru several tricky intersections - finnaly stalled out two houses from mine because my neighbors where chatting in the street blocking my path home. two problems - the lever on my TB - several times - returned from full open to about 1/4 open - got stuck there? kink in throttle cable somewhere it think? cable are not twisted in center console. and it seems no matter what spring in put on my throttle body - it does not seem to pull it closed fully. can it be just gummed up? Attached image(s) |
r_towle |
Oct 18 2008, 08:40 AM
Post
#2
|
Custom Member Group: Members Posts: 24,624 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
You have been warned.
Its winter season now....stop driving your car and start working on the list of things todo on your car. Get out the jack stands and assume the position Rich |
solex |
Oct 18 2008, 11:18 AM
Post
#3
|
Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
i was driving around yesterday - when all of a sudden my engine reved up extreme - i shut down and pulled to the side of the road - i figured my throttle cable snapped or my return spring popped off. so i looked under the hood and all looked ok and then i pulled up the carpet to see what was going on near my gas peddle but all looked ok. drove home about 5 miles after gettting a push to get started - different problem - al the way in 3rd gear, shutting engine down when i hit 60mph, made it thru several tricky intersections - finnaly stalled out two houses from mine because my neighbors where chatting in the street blocking my path home. two problems - the lever on my TB - several times - returned from full open to about 1/4 open - got stuck there? kink in throttle cable somewhere it think? cable are not twisted in center console. and it seems no matter what spring in put on my throttle body - it does not seem to pull it closed fully. can it be just gummed up? I had a similar problem the throttle plate is not bushed and goes directly through the pot metal on the body. It gets warn and the plate starts t dig into the the bore which causes it to stick... I pulled mine apart and cleaned everything and and readjusted the plate stop. This is a temporary solution eventually I will need to install some brass guides. There was/is someone on the site that could do this but I do not remember his name. |
orange914 |
Oct 18 2008, 02:44 PM
Post
#4
|
http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
I had a similar problem the throttle plate is not bushed and goes directly through the pot metal on the body. It gets warn and the plate starts t dig into the the bore which causes it to stick... I pulled mine apart and cleaned everything and and readjusted the plate stop. This is a temporary solution eventually I will need to install some brass guides. There was/is someone on the site that could do this but I do not remember his name. temparily of course until you have the shaft rebushed, you can run a trail of white lube around the exterior shaft to body. this helps tempararily seal the air leakage that gets in through a worn shaft. oh the worn carburator days... (IMG:style_emoticons/default/stromberg.gif) |
jimkelly |
Nov 12 2008, 12:32 PM
Post
#5
|
Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
turns out the sticking was due to a frayed throttle cable at the firewall.
the other day i removed the TB and cleaned it up real good - there did not seems to be any way for it to bind like it was. so today - i removed the throttle cable and BAM - big time fray at firewall area. luckily i had a spare - off my v8 car - since i recently upgraded it with a 18 inch longer cable. still my engine runs like shit - maybe some bad spark plug wires? jim |
rmital |
Nov 12 2008, 03:37 PM
Post
#6
|
Northeast optimist Group: Members Posts: 1,951 Joined: 12-December 05 From: Park Ridge, NJ Member No.: 5,268 |
You have been warned. Its winter season now....stop driving your car and start working on the list of things todo on your car. Get out the jack stands and assume the position Rich ...that's just wrong...especially coming from you. where's the pic of your car covered in road salt! |
Ericv1 |
Nov 13 2008, 01:54 AM
Post
#7
|
Member Group: Members Posts: 259 Joined: 30-December 07 From: Cincinnati, Ohio Member No.: 8,518 Region Association: Upper MidWest |
turns out the sticking was due to a frayed throttle cable at the firewall. the other day i removed the TB and cleaned it up real good - there did not seems to be any way for it to bind like it was. so today - i removed the throttle cable and BAM - big time fray at firewall area. luckily i had a spare - off my v8 car - since i recently upgraded it with a 18 inch longer cable. still my engine runs like shit - maybe some bad spark plug wires? jim I had this happen with two throttle cables purchased from Pelican. They were brand new and when I attached the cable, the pressure would cause them to crimp the cable. I had to use a small screwdriver to spread the wires apart. I then applied some 3-N-1 oil and haven't had a problem in a year. |
jimkelly |
Nov 13 2008, 08:47 AM
Post
#8
|
Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
one note for all - when you push a new throttle cable thru the tube thru the center console - there is a good chance it will have wrapped itself once around the clutch cable - you much ensure it is not wrapped around the clutch cable before you connect it to the throttle bell crank. in fact it is best to untangle before you attach the forward end fittings onto the cables threaded end, look down the center concsole thru the front access hole with a mirror and flash light. if you don't ensure it is not tangled - when you step on the clutch you rpm's will rev - not good ; )
|
Lo-Fi Version | Time is now: 27th September 2024 - 12:01 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 ... |