 Idle RPM Vs. Engine Temperature, Should It Drop? |
|
|
|
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. |
|
|
| windforfun |
 Jul 13 2022, 04:58 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,870 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None  |
"73 1.7 with 49K miles.
The idle rpm really drops if the car has been sitting out in the sun & not running. Under cool & running conditions, the idle might drop by about 200 rpm once the engine is warm. Is this "normal" behavior? Is this the hot start issue? |
   |
 
|
  |
Replies
| mgphoto |
Jul 14 2022, 02:53 PM
Post
#2
|
|
"If there is a mistake it will find me" Group: Members Posts: 1,341 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
Idle for a type vi is very much dependent on the load, my idle is set at 1050, with the headlights on.
It can jump slightly higher, without the headlights and the voltage regulator switching off alternator load. I set the idle at 1050 rpm because I run a lightened flywheel, the idle tends to dip very low on braking, works very well for me. |
|
|
|
| Highland |
Jul 14 2022, 03:52 PM
Post
#3
|
|
Senior Member Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
QUOTE(mgphoto @ Jul 14 2022, 01:53 PM)  Idle for a type vi is very much dependent on the load, my idle is set at 1050, with the headlights on. It can jump slightly higher, without the headlights and the voltage regulator switching off alternator load. I set the idle at 1050 rpm because I run a lightened flywheel, the idle tends to dip very low on braking, works very well for me. I experienced the same prior to 123 distributor install. Now when I turn on the headlights, fog lights, fan the rpm (at idle) dips for a second then return to 1000 rpm. Can anyone explain to me why load is an issue with the stock dizzy but not the 123? |
|
|
|
Posts in this topic
windforfun Idle RPM Vs. Engine Temperature Jul 13 2022, 04:58 PM
StarBear Not familiar with 1.7 issues but the hot star issu... Jul 13 2022, 05:30 PM windforfun Thanks. Car starts but has a low idle. Jul 13 2022, 06:07 PM emerygt350 Do you still have fuel injection? If so, what is ... Jul 13 2022, 06:22 PM
windforfun
Do you still have fuel injection? If so, what is... Jul 13 2022, 06:35 PM dr914@autoatlanta.com cold needs a richer mixture and more air, warm nee... Jul 14 2022, 03:43 PM windforfun
cold needs a richer mixture and more air, warm ne... Jul 14 2022, 04:06 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 20th June 2024 - 05:27 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.