alternator light, staying on |
|
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. |
|
alternator light, staying on |
tomh |
Aug 13 2010, 11:22 PM
Post
#1
|
Member Group: Members Posts: 322 Joined: 28-February 10 From: san jose Member No.: 11,412 Region Association: None |
My alternator light is now staying on however I am missing 2 fueses.could this be the problem?All my lights work and are not dimming at all but my blinkers quit.
The 2 fuses i am missing are the7th and 8th from the left side of the fuse box. What are the amps of the differnt color fuses? Also where is the regulator located? |
realred914 |
Aug 13 2010, 11:28 PM
Post
#2
|
Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
My alternator light is now staying on however I am missing 2 fueses.could this be the problem?All my lights work and are not dimming at all but my blinkers quit. The 2 fuses i am missing are the7th and 8th from the left side of the fuse box. What are the amps of the differnt color fuses? Also where is the regulator located? for a 1971 914 fuse 7 is for license plate light fuse 8 is for wipers, horn, lighter and ventalaiton fan number 8 is a 25 amp fuse, number 7 is a 8 amp fuse all fuses are 8 amps excpet for numbers 8 and 12 this is for a 71 car. white fuses are 8 amps, gernally i forget off hand if red or blue is the 25 amp, but the amp rating should be on the fuse body, usually on the side opposite the filiment. glass cased fuses are also avialable that fit they are not color coded regulator is on teh realy plate in engine bay just behind the drivers position it should be a silver colored rectangular can. good luck |
tomh |
Aug 13 2010, 11:43 PM
Post
#3
|
Member Group: Members Posts: 322 Joined: 28-February 10 From: san jose Member No.: 11,412 Region Association: None |
My alternator light is now staying on however I am missing 2 fueses.could this be the problem?All my lights work and are not dimming at all but my blinkers quit. The 2 fuses i am missing are the7th and 8th from the left side of the fuse box. What are the amps of the differnt color fuses? Also where is the regulator located? for a 1971 914 fuse 7 is for license plate light fuse 8 is for wipers, horn, lighter and ventalaiton fan number 8 is a 25 amp fuse, number 7 is a 8 amp fuse all fuses are 8 amps excpet for numbers 8 and 12 this is for a 71 car. My car is a 72 is the 25 amp fuse black? Is that the VR on the relay plate?The silver box and how does white fuses are 8 amps, gernally i forget off hand if red or blue is the 25 amp, but the amp rating should be on the fuse body, usually on the side opposite the filiment. glass cased fuses are also avialable that fit they are not color coded regulator is on teh realy plate in engine bay just behind the drivers position it should be a silver colored rectangular can. good luck Is the 25 amp fuse black?How does the vr remove from the relay board? |
realred914 |
Aug 14 2010, 12:00 AM
Post
#4
|
Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
My alternator light is now staying on however I am missing 2 fueses.could this be the problem?All my lights work and are not dimming at all but my blinkers quit. The 2 fuses i am missing are the7th and 8th from the left side of the fuse box. What are the amps of the differnt color fuses? Also where is the regulator located? for a 1971 914 fuse 7 is for license plate light fuse 8 is for wipers, horn, lighter and ventalaiton fan number 8 is a 25 amp fuse, number 7 is a 8 amp fuse all fuses are 8 amps excpet for numbers 8 and 12 this is for a 71 car. My car is a 72 is the 25 amp fuse black? Is that the VR on the relay plate?The silver box and how does white fuses are 8 amps, gernally i forget off hand if red or blue is the 25 amp, but the amp rating should be on the fuse body, usually on the side opposite the filiment. glass cased fuses are also avialable that fit they are not color coded regulator is on teh realy plate in engine bay just behind the drivers position it should be a silver colored rectangular can. good luck Is the 25 amp fuse black?How does the vr remove from the relay board? note framilur with black fuses, white red and blue is what i am used to I think red is the 25 amp, but in small print it should be on teh fuse body. different folks make fuses, cont vouch for the color of aftermarket, the regulator shoudl haev a couple screws on teh side down low that hold it to the realy plate, unscrew and you shoudl have it off, by pulling it up and out. good luck |
tomh |
Aug 14 2010, 12:16 AM
Post
#5
|
Member Group: Members Posts: 322 Joined: 28-February 10 From: san jose Member No.: 11,412 Region Association: None |
My alternator light is now staying on however I am missing 2 fueses.could this be the problem?All my lights work and are not dimming at all but my blinkers quit. The 2 fuses i am missing are the7th and 8th from the left side of the fuse box. What are the amps of the differnt color fuses? Also where is the regulator located? for a 1971 914 fuse 7 is for license plate light fuse 8 is for wipers, horn, lighter and ventalaiton fan number 8 is a 25 amp fuse, number 7 is a 8 amp fuse all fuses are 8 amps excpet for numbers 8 an this is for a 71 car. My car is a 72 is the 25 amp fuse black? Is that the VR on the relay plate?The silver box and how does white fuses are 8 amps, gernally i forget off hand if red or blue is the 25 amp, but the amp rating should be on the fuse body, usually on the side opposite the filiment. glass cased fuses are also avialable that fit they are not color coded regulator is on teh realy plate in engine bay just behind the drivers position it should be a silver colored rectangular can. good luck Is the 25 amp fuse black?How does the vr remove from the relay board? note framilur with black fuses, white red and blue is what i am used to I think red is the 25 amp, but in small print it should be on teh fuse body. different folks make fuses, cont vouch for the color of aftermarket, the regulator shoudl haev a couple screws on teh side down low that hold it to the realy plate, unscrew and you shoudl have it off, by pulling it up and out. good luck Thanks for the info.I read on another forum that if your missing some fuses that could be the cause of the light stayaing on.have you heard this before? |
Spoke |
Aug 14 2010, 07:04 AM
Post
#6
|
Jerry Group: Members Posts: 7,052 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
could be the cause of the light stayaing on.have you heard this before? First off, (IMG:style_emoticons/default/welcome.png) If the GEN light is on then the fuse for the GEN light is ok and there are no other fuses controlling the alternator. Question: Did the GEN light turn off when running your car before? Did you change anything? Is the Alternator belt still attached? The Voltage Regulator is located on the relay board in the engine compartment. |
tomh |
Aug 14 2010, 08:45 AM
Post
#7
|
Member Group: Members Posts: 322 Joined: 28-February 10 From: san jose Member No.: 11,412 Region Association: None |
could be the cause of the light stayaing on.have you heard this before? First off, (IMG:style_emoticons/default/welcome.png) If the GEN light is on then the fuse for the GEN light is ok and there are no other fuses controlling the alternator. Question: Did the GEN light turn off when running your car before? Did you change anything? Is the Alternator belt still attached? The Voltage Regulator is located on the relay board in the engine compartment. The light was not staying on befor.The 2.0 was just put in 4weeks ago and I only have 100 miles or so on it.I took a few weekends to dial in the FI so now its running killer but this light problem showed up.Can I check the belt tightness and the groud wires from takeing that small piece of tin off above the alt?I will get some new fuses today and start to tackel the problem sunday.Also whats the chanch its the VR? |
Spoke |
Aug 14 2010, 10:02 AM
Post
#8
|
Jerry Group: Members Posts: 7,052 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
It could be the Alt, the VR, or the belt.
My engine is in pieces so I don't know where you would be able to view the belt. You should see it either on top of the engine or underneath it. You just want to check that is isn't totally loose or broken. There are some tests that can be done to isolate the VR or the Alternator once you verify the belt is in place. The ground strap is on the transmission and connects to the bottom of the floor of the trunk. The ground strap would only be a concern, if the ALT seems not to be working AND the starter won't turn fast enough. They both use the same ground strap for a return path to battery so if one is suffering the other will be too. Also, what voltage do you measure across the battery with engine off, at idle, and revving? |
tomh |
Aug 15 2010, 01:02 PM
Post
#9
|
Member Group: Members Posts: 322 Joined: 28-February 10 From: san jose Member No.: 11,412 Region Association: None |
It could be the Alt, the VR, or the belt. My engine is in pieces so I don't know where you would be able to view the belt. You should see it either on top of the engine or underneath it. You just want to check that is isn't totally loose or broken. There are some tests that can be done to isolate the VR or the Alternator once you verify the belt is in place. The ground strap is on the transmission and connects to the bottom of the floor of the trunk. The ground strap would only be a concern, if the ALT seems not to be working AND the starter won't turn fast enough. They both use the same ground strap for a return path to battery so if one is suffering the other will be too. Also, what voltage do you measure across the battery with engine off, at idle, and revving? switched VR cleaned ground strap and 2 fuses that fell out.One of those 3 things fixed the problem.By the way how much tension should be on the belt?mine flexes about 1- 1.5 inches |
Kirmizi |
Aug 15 2010, 03:30 PM
Post
#10
|
Senior Member Group: Members Posts: 836 Joined: 12-February 06 From: Wyoming, US Member No.: 5,568 Region Association: None |
I'd say that's a bit loose for belt tension, Haynes says .6 in deflection
Mike |
Lo-Fi Version | Time is now: 26th September 2024 - 08:10 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 ... |