Question about 2001 Porsche Boxster
Battery light on dash is on ,checked drive belt and is ok;have ordered a replacement alternator.Charged battery up again and took car out,battery was flat very quickly with no fans etc on !
2 hours needed to change alternator:
- disconnect battery.
- remove top covers of engine - behind front seats
- remove 4 plastic bolts to remove side cover.
- remove all of the bolts to remove metal cover
- losen belt by putting a 24mm wrench on tensioner and turing CCW. You should also consider changing the belt ($18)
- remove the alternator screw and the flywheel screw beside alternator.
- move the alternator up on the flywheel screw side. If stuck use a hammer and wedge to move it up until it losens.
- remove wire and plug.
Rebuilding the alternator. Only 4 things can be wrong:
1- bearing worn out - turn rotor to test.
2- coils short - smell and check for burning in side.
3- Rectifier - take plastic cap off and test with an ohm meet from the heat sink to each of the 3 diodes, then reverse the testing points. If both resistances are the same on any of the 3 diodes, replace rectifier.
4- If the top 3 are fine, then it is the regulator. This is a hard part to find retail. Ebay and other sellers will try and get over $100 for it. Porche claims they don't sell. I found it a wholesaler, who I begged to sell it to me. Cost C$17. 2 bolts and one screw and 5 minutes later and it was replaced.
To reinstall follow the reverse. Remember the flywheel part of the alternator goes in on the to of the backet. you may have to use a hammer and wedge to get it down. Install the flywheel before it goes all the way down, or it will be difficult to slide in.
Posted on Mar 19, 2009
To gain access to the alternator you have first disconnect your battery. After that you need to remove the passenger seat. Then remove the engine access cover and you will be able to remove the alternator and belt.
Posted on Jan 29, 2009
I need a rectifier as well since I have AC current leak peaking around a full one volt. This makes my radio cut out at higher engine RPM. Where do you get this part in lieu of replacing the whole alternator?
Posted on Apr 20, 2010
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Posted on Jan 02, 2017
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