 My car is back, but it hiccups or hesitates |
|
|
|
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. |
|
|
  |
| jarbuthnot |
 Sep 2 2004, 06:54 PM
Post
#1
|
|
Senior Woman Driver  Group: Members Posts: 201 Joined: 22-August 03 From: Pembroke, ME Member No.: 1,065  |
The engine is a brand new 2L. The hiccups are mostly in low gears at 3K-4K RPMs. My mechanic thinks this is due to the fact that he can't adjust the fuel injection mixture. He doesn't have the right equipment (a gas analyzer?). Does this sound right?
|
   |
 
|
| Cap'n Krusty |
Sep 2 2004, 07:17 PM
Post
#2
|
|
Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Naaaahhhh. Does it happen at steady throttle? Look at the throttle switch. Check the points, the ground wire on the breaker plate, and the wiring to the distributor and coil. HTH, The Cap'n
|
|
|
|
| jarbuthnot |
Sep 3 2004, 12:20 AM
Post
#3
|
|
Senior Woman Driver Group: Members Posts: 201 Joined: 22-August 03 From: Pembroke, ME Member No.: 1,065 |
Thanks, Cap'n. I forgot to mention, I'm not mechanical. What is steady throttle?
This post has been edited by jarbuthnot: Sep 3 2004, 12:23 AM |
|
|
|
| lapuwali |
Sep 3 2004, 01:06 AM
Post
#4
|
|
Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
He means does it do it only while you're accelerating, or while you're just cruising along at a set speed?
|
|
|
|
| redshift |
Sep 3 2004, 01:53 AM
Post
#5
|
|
Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Bucking?
Sounds like the Throttle Position Switch.. it's an easy fix, Otto sent me a crappy one too. (IMG:style_emoticons/default/smile.gif) M |
|
|
|
| Bleyseng |
Sep 3 2004, 05:41 AM
Post
#6
|
|
Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
He is not supposed to adjust the fuel fix as it is set by the factory. What injection parts are you using for the 2.0l? The injection off the 1.7L? The injectors are? What MPS and ECU?
All the parts and injection pieces must match or you will have problems. It does sound like a TPS problem but at the wrong rpm. Geoff |
|
|
|
| redshift |
Sep 3 2004, 05:55 AM
Post
#7
|
|
Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Maybe Geoff... but she says low gears, and that is where that buck stands up!
Yank-Yank! Yank! (IMG:style_emoticons/default/smile.gif) You know too much! M |
|
|
|
| Bleyseng |
Sep 3 2004, 08:44 AM
Post
#8
|
|
Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
It is usually around 2500-3000rpms as you cruise in 3rd going from off throttle to on throttle due to the worn out traces in the TPS.
Bad transitions at higher rpms sometimes are due to bad A/F mix due to mixed up Djet parts in my experience. Just shooting in the dark trying to guess what could be the problem....... More info would help.... (IMG:style_emoticons/default/smile.gif) |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 12th June 2024 - 12:15 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.