 914 tachometer acting funny |
|
|
|
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. |
|
|
| recko911 |
 Oct 20 2010, 08:49 AM
Post
#1
|
|
Member  Group: Members Posts: 93 Joined: 6-February 06 From: Los Angeles, CA Member No.: 5,535  |
What would be the cause for the tachometer needle to move irregular. It's starts off normal but as I get to the end of the gear it jumps irradically. Then returns to normal. It also feels as if the engine will shut off but it doesn't. Advice would be appreciated.
|
   |
 
|
  |
Replies
| recko911 |
Oct 20 2010, 10:10 AM
Post
#2
|
|
Member Group: Members Posts: 93 Joined: 6-February 06 From: Los Angeles, CA Member No.: 5,535 |
I have electronic ignition on there now. But it's about 3 years old and I just replaced the coil. I have also noticed that When I arrived to work today I turned my car off and then. Tried to turn it back on and nothing not even an engine crank or the starter as if it were dead . Ignition light on like normal but no engine response. I just went out there and car started fine
|
|
|
|
| realred914 |
Oct 20 2010, 10:32 AM
Post
#3
|
|
Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
QUOTE(recko911 @ Oct 20 2010, 08:10 AM)  I have electronic ignition on there now. But it's about 3 years old and I just replaced the coil. I have also noticed that When I arrived to work today I turned my car off and then. Tried to turn it back on and nothing not even an engine crank or the starter as if it were dead . Ignition light on like normal but no engine response. I just went out there and car started fine intermittant probelm? maybe your key switch is dieing? these switches do die, that can cuase low voltage back at the coil and probelms with not cranking over. , get a volt reading on the coil, with ignition on, measure from the positive terminal (power from ignition switch) top ground, it should be close to battery voltage then try it with the engine running ansd confirm teh voltage does nto drop to much if the voltage is low, than can point towards teh key switch or the associated connections or even a bad engine ground strap! also be sure the coil is hooked up right make sure teh positve marked terminal is indded conected to the ignition power and that the wire from the negitive terminal is indeed going to the distribuator. the coil is polarity sensitive (you will get a hotter sprak when hooked up right, poor sprak when hooked up reveresed. so let us know how your voltage readings are? good luck (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/chowtime.gif) (IMG:style_emoticons/default/flag.gif) (IMG:style_emoticons/default/first.gif) (IMG:style_emoticons/default/santa_smiley.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/aktion035.gif) (IMG:style_emoticons/default/lol-2.gif) |
|
|
|
| mburkhart |
Oct 20 2010, 10:53 AM
Post
#4
|
|
Member Group: Members Posts: 113 Joined: 3-July 05 From: Chester, MD Member No.: 4,364 Region Association: MidAtlantic Region |
I had an issue last year where a corroded fuse (on the panel below the steering wheel) was causing the tach to cut out and then on again. Cleaning the fuse fixed it.
|
|
|
|
Posts in this topic
recko911 914 tachometer acting funny Oct 20 2010, 08:49 AM
Cap'n Krusty The FIRST step in tach diagnosis in a stock 914 is... Oct 20 2010, 09:09 AM
recko911
The FIRST step in tach diagnosis in a stock 914 i... Oct 20 2010, 10:53 AM Cap'n Krusty
The FIRST step in tach diagnosis in a stock 914 ... Oct 20 2010, 11:48 AM Tom If it has been a while since the last tune-up, rep... Oct 20 2010, 09:23 AM realred914 :smash: tach get signal from tjhe spark coil. low ... Oct 20 2010, 09:42 AM ConeDodger The Cap'n is right on. The needle jumps becaus... Oct 20 2010, 10:21 AM recko911 Hopefully I make it home with this rain.
I also... Oct 20 2010, 11:41 AM realred914
Hopefully I make it home with this rain.
I als... Oct 20 2010, 12:35 PM iamchappy I've had a bad alternator or regulator make th... Oct 20 2010, 01:14 PM recko911 Driving home I continued to have issues. Car almos... Oct 20 2010, 10:13 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 4th June 2025 - 09:10 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.