Question about 2003 Porsche Cayenne
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Posted on Jan 02, 2017
SOURCE: booster vacuum hose
Locate the hose... it has to be one that can withstand the vacuum imposed on it, so that it does not collapse when their is vacuum to it which in this case is pretty much all the time. if you are not sure where the hose is.... look for your master cyclinder ... the large round metal can behind it next to the firewall. if you are not buying a direct replacement hose... take the old one off and take it to a auto shop or hardware store... get one a little longer then you need keeping in mind if you have to cut it you can't fix a hose that has been cut to short. there is a special tool for taking the clips off. tho you can usually just use a pair of pliers to squeeze the two metal tabs together as you move it back from the connection.
abit verbose answer and if i've not covered anything feel free to ask
Posted on Sep 21, 2008
SOURCE: Check Engine Light
It sounds like you may have a failing Mass Air Flow sensor, seems like Ive been seeing these tied together quite often. Its a little tricky but a good repair shop should be able to test this sensor. I dont want to tell you to replace it without having it tested cause they are a bit pricey but check around, you never know. Hope this give youu another idea where to look.
Posted on Oct 02, 2008
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
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