Starter, No click at starter with ignition or remote start |
|
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. |
|
Starter, No click at starter with ignition or remote start |
rgare |
Mar 22 2024, 01:20 PM
Post
#1
|
Newbie Group: Members Posts: 13 Joined: 7-January 17 From: Lancaster CA Member No.: 20,734 Region Association: None |
No click
- Resistance between negative battery to starter case: 0.3 - Voltage at the the battery: 12.73 - Voltage at the starter: 12.73 - Voltage at the ignition spade while cranking: 12.53 If I connect a remote between the battery lead on the starter and the ignition spade on the starter and a multimeter to the battery lead, voltage drops from 12.7 to 2, when I press the remote. The starter doesn't click or engage. (I don't know what to think of that) I just got the starter back from a local rebuilder with a good reputation. Before I take it back and have him check it, does anyone have any ideas? |
Superhawk996 |
Mar 22 2024, 02:40 PM
Post
#2
|
914 Guru Group: Members Posts: 6,502 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Resistance between chassis and starter case is way too high at .3 ohms. Needs to be zero.
Starter solenoid wants to draw 25A. The voltage drop across .3 ohms at 25A draw is 7.5v (lost). Given you are measuring 2v with solenoid trying to pull current, I’d say it’s all pretty close and that you are losing more than 7.5v in the ground strap vs theoretical. Start by cleaning the ground stud (under trunk) and replacing your ground strap between chassis and transmission (most common problem). It is also possible the resistance is in the negative cable between the battery and the chassis. Or a little of each. I’ve seen plenty of cars with both problems. You can test more directly by putting negative from battery right to starter case and positive from battery right to the solenoid + with jumper cables if you want to test it more directly. |
rgare |
Mar 22 2024, 04:12 PM
Post
#3
|
Newbie Group: Members Posts: 13 Joined: 7-January 17 From: Lancaster CA Member No.: 20,734 Region Association: None |
Resistance between chassis and starter case is way too high at .3 ohms. Needs to be zero. Starter solenoid wants to draw 25A. The voltage drop across .3 ohms at 25A draw is 7.5v (lost). Given you are measuring 2v with solenoid trying to pull current, I’d say it’s all pretty close and that you are losing more than 7.5v in the ground strap vs theoretical. Start by cleaning the ground stud (under trunk) and replacing your ground strap between chassis and transmission (most common problem). It is also possible the resistance is in the negative cable between the battery and the chassis. Or a little of each. I’ve seen plenty of cars with both problems. You can test more directly by putting negative from battery right to starter case and positive from battery right to the solenoid + with jumper cables if you want to test it more directly. Good info thank you |
Lo-Fi Version | Time is now: 31st October 2024 - 07:32 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 ... |