Alternator replacement cost-- in labor--, Can I get to it without dropping the engine? |
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Alternator replacement cost-- in labor--, Can I get to it without dropping the engine? |
Luke15 |
Sep 28 2016, 09:18 AM
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#1
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Newbie Group: Members Posts: 10 Joined: 6-August 16 From: Baltimore Member No.: 20,268 Region Association: None |
I think my 914 has a bad alternator. I have checked the regulator and that is good. The belt is on tight. I think that leaves the alternator as my problem. Could it be anything else?
I have been told that the alternator is very hard to replace and requires the engine to be dropped to get to it, which I find very surprising. Can anyone tell me how difficult and expensive in labor it would be replace? Can I get to it from underneath without dropping the engine? Thank you! |
7TPorsh |
Sep 28 2016, 09:23 AM
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#2
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7T Porsh Group: Members Posts: 2,691 Joined: 27-March 06 From: Glendale Ca Member No.: 5,782 Region Association: Southern California |
I am in the process of doing this right now. I was getting erratic voltage and finally narrowed it down to bad diodes in the alternator.
My car is on ramps, it took me about 30 minutes to get the alternator out....without removing any tin. Loosened but not removed. You can get a rebuilt Bosch unit for $110 from PelicanParts. I anticipate getting the unit in will take a little longer but should be ok. Note: I have a header so there was no extra time spent on removing any heating parts. McMark did a write up here on the site and there is also one on Pelican site....but that one has you removing tin. In a shop this is probably rated as a 2-3 hour job plus they won't install the unit unless you buy it through them so there is a 30% or more markup on that. |
Luke15 |
Sep 28 2016, 09:27 AM
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#3
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Newbie Group: Members Posts: 10 Joined: 6-August 16 From: Baltimore Member No.: 20,268 Region Association: None |
thanks-- so you are certain you can get to the alternator w/o dropping the engine? Is there a trick to getting it out?
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Luke15 |
Sep 28 2016, 09:49 AM
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#4
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Newbie Group: Members Posts: 10 Joined: 6-August 16 From: Baltimore Member No.: 20,268 Region Association: None |
Gary- do you know how I can tell if I have a bad alternator or could it possibly be something else like a harness? Thanks. Jim
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VaccaRabite |
Sep 28 2016, 09:59 AM
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#5
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En Garde! Group: Admin Posts: 13,444 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
You can absolutely replace the Alternator without dropping the engine. There are several members here that have done it along the road side.
IIRC its held in by the belt, the tension bolt and the swivel bolt (and of course the wires) Let loose the tension on the tension bolt, remove the belt, pull the wires and then remove the swing bolt. Sounds easy? Well, the car is low and you don't have much room, but it should only take about an hour to remove if you have never done it before. Zach |
Luke15 |
Sep 28 2016, 10:07 AM
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#6
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Newbie Group: Members Posts: 10 Joined: 6-August 16 From: Baltimore Member No.: 20,268 Region Association: None |
Thanks Zach-- do you know how I can tell if it is a bad alternator for certain though? Could it be a wiring harness issue? Anything else? Bad relay board?
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7TPorsh |
Sep 28 2016, 10:07 AM
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#7
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7T Porsh Group: Members Posts: 2,691 Joined: 27-March 06 From: Glendale Ca Member No.: 5,782 Region Association: Southern California |
Gary- do you know how I can tell if I have a bad alternator or could it possibly be something else like a harness? Thanks. Jim What are the symptoms? How did you determine the voltage regulator is OK? How is the Alt light behaving? What is the voltage across the battery poles with and without the engine running? You will need a voltmeter at minimum to troubleshoot....DO NOT RELY on any modern diagnostic by some some self proclaimed professional technical guru at AAA, Firestone, AAMCO, etc. |
Garland |
Sep 28 2016, 10:08 AM
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#8
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Restoration Fanatic Group: Members Posts: 1,329 Joined: 8-January 04 From: ......Michigan...... Member No.: 1,535 Region Association: Upper MidWest |
And a few more hours, if it has never been done (removed from that engine) before.
Here is the link: 914/4 Alternator R&R By: McMark |
stevegm |
Sep 28 2016, 10:09 AM
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#9
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Advanced Member Group: Members Posts: 2,111 Joined: 14-July 14 From: North Carolina Member No.: 17,633 Region Association: South East States |
I think Rick (rick 918-S) said he did it once. But, it was pretty difficult. You might check with him.
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Luke15 |
Sep 28 2016, 10:17 AM
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#10
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Newbie Group: Members Posts: 10 Joined: 6-August 16 From: Baltimore Member No.: 20,268 Region Association: None |
Symptoms: Light on dash now on "g" with circle around it; drove car around for an hour or so over the weekend and went to get gas. Car would not start and had to jumpstart it. Got the battery fully charged as well. Light is still on. I tried a "good" regulator I have and the light is still on. I check the belt and that is tight. |
Mikey914 |
Sep 28 2016, 10:24 AM
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#11
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The rubber man Group: Members Posts: 12,670 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
I have done it in my garage. It's slightly better than dropping the engine, but I kept questioning if it would be easier if I'd have dropped it. Maybe saved 30 -60 min not dropping it.
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VaccaRabite |
Sep 28 2016, 10:43 AM
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#12
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En Garde! Group: Admin Posts: 13,444 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I think Rick (rick 918-S) said he did it once. But, it was pretty difficult. You might check with him. I've done it on cars with headers and cars with heat exchangers. Really, its not all that difficult. Its just cramped and can take you a moment to see what you need to do if you have never done it before. Seriously. If I can do it anyone can. Zach |
McMark |
Sep 28 2016, 11:04 AM
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#13
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
First time, it'll take you 2-3hours. After 10 years of working on 914s, I can do it in about 30m without lifting the car (assuming it's not crazy low).
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malcolm2 |
Sep 28 2016, 11:55 AM
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#14
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
thanks-- so you are certain you can get to the alternator w/o dropping the engine? Is there a trick to getting it out? I have a 75 with 75 exhaust. Unfortunately I have had mine OUT twice in the last 2 years. I do remember the last removal the best. With a 75 I can remove the heat exchanger on that side and loosen up some of the tin without dealing with the exhaust pipes bolted to the heads. (IMG:style_emoticons/default/shades.gif) With an earlier style exhaust and HE I just don't know. But start the job and if the exhaust has to come out, so be it. Just one side, maybe 7 bolts. IIRC McMark's write up was a car with no HE. That would open things up quite a bit. I have found 2 rebuilders close to me. the 1st one was $75, but apparently he did not change the brushes.... so when they wore down the 2nd rebuilder charged me $58, for what he says was "everything that is repairable".... we shall see. I was getting erratic voltage too. I was told that the brush holders touching and grounding against stuff inside that they are not supposed to touch is what can cause that. here is a link to my thread.... similar dash light issue |
Luke15 |
Sep 28 2016, 12:02 PM
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#15
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Newbie Group: Members Posts: 10 Joined: 6-August 16 From: Baltimore Member No.: 20,268 Region Association: None |
Thanks to all. Does anything think the problem could be something other than the alternator? Possibly the wiring harness? I wish there was a simply way to test to see if the alternator was bad.
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euro911 |
Sep 28 2016, 12:02 PM
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#16
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,849 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
I've changed a couple of alternators from under the car (on jack stands). The first time took me about hours, because I was on the learning curve and by myself. Second time, had a friend topside to help - took about half the time.
(both cars had early style heat exchangers) Mark's write up spells it out nicely. |
malcolm2 |
Sep 28 2016, 12:20 PM
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#17
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
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Elliot Cannon |
Sep 28 2016, 12:22 PM
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#18
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
I helped ( by loaning him my jack stand) someone change an alternator in the parking lot at the Atomic Ramble in Albuquerque years ago. It can be a bit time consuming but not that difficult to do. Read McMarks write up a few times and get to it. (IMG:style_emoticons/default/biggrin.gif)
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dcheek |
Sep 28 2016, 12:24 PM
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#19
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Senior Member Group: Members Posts: 691 Joined: 30-May 06 From: Westfield, New Jersey Member No.: 6,103 |
My symptoms of a bad alternator:
Volt gauge in center console would jump all over the place and then pin the needle and stay there. I would turn the lights, fan, radio and rear defogger on and it would drop to about 14 volts. This would normally look like a voltage regulator problem, so I replaced it with a new one. Same problem. I pulled the alternator and had it rebuilt. Problem solved. I used the procedure on the Pelican Parts website* for an earlier model 914 and could not get the alternator past the heat exchanger. I have a '76. '75 and '76 914's require removal of the drivers side heat exchanger which the procedure doesn't tell you. * http://www.pelicanparts.com/techarticles/9...alt_replace.htm Dave |
Amphicar770 |
Sep 28 2016, 12:35 PM
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#20
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Senior Member Group: Members Posts: 1,191 Joined: 20-April 10 From: PA, USA Member No.: 11,639 Region Association: MidAtlantic Region |
Make sure you get a good quality rebuild as this is not a job you want to do twice. I used a reputable, local re-builder. I explained to them the difficulty in R&R and asked them to replace anything that might be a problem down the road even if it was still within specs. They did a great job and cost was not unreasonable.
Also, before going to the trouble of removing the alternator, make sure your voltage regulator is not the culprit. The relay boards also go bad so check that as well. |
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