 MPS replaced, now I can't get the car started |
|
|
|
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. |
|
|
| mdwman |
 Dec 31 2007, 09:31 PM
Post
#1
|
|
Member  Group: Members Posts: 65 Joined: 28-May 07 From: Tennessee Member No.: 7,764  |
I have been trying to lick a hunting idle and had my original MPS tested with a mityvac. It started to leak down at 10 in/hg so I purchased a used one (same part #) that had good vacuum. I have installed it but now I can't get the car started. The ECU knob has been turned all the way CW so I presume the idle adjustment was adjusted to compensate. When I reinstall my original unit the car will start but still hunts. This is a '73 1.7L with the original d-jet FI. It usually starts first turn of the key and idles about 1600 until the AAR closes, then hunts from 1600 to stall if I don't give it gas. After it gets good and warm idle settles down to about 900 but still hunts. All the vacuum hoses have been replaced and I have sprayed carb cleaner in all the suspect areas without a response. Is there anything I should do since I am intoducing a different MPS into the system? I purchased the used MPS from a reputable seller who will refund if I desire but I would love to make it work.
Thanks for any help. |
   |
 
|
Posts in this topic
mdwman MPS replaced Dec 31 2007, 09:31 PM
banger Did you check the coils on the new MPS to see if t... Dec 31 2007, 10:15 PM BMXerror Shot in the dark here, but you might also want to ... Dec 31 2007, 10:22 PM
orange914
Shot in the dark here, but you might also want to... Jan 2 2008, 07:29 PM r_towle In 1973 the ECU and MPS are specific and cannot be... Jan 2 2008, 08:29 PM  |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 27th May 2024 - 06:39 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.