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99 STS Alternator Replacement


cdictas

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Need some input from the team,

This past Saturday was such a nice day, I decided to investigate what was involved in replacing my alternator (noisy bearing) in my 99 STS. Having read the manual, which says to remove the fan and lower the alternator out the bottom (clearly not enough room on a 99) and all the historical postings, I can tell its going to be a _itch of a job. :angry: So I've decided to tackle this job in the spring.

One of the posting indicated that the best way to tackle this job is to remove the radiator and fan in order to gain access to the alternator. Another post indicated that by removing the AC compressor (requires evacuation of the AC system) you can lower the alternator down and out through the passenger side wheel well access panel. What about lowering the engine about a foot (a nightmare thought, I Know) in order to gain better access, does this make sense? Has anyone recently replaced their alternator in a 99?

Chuck

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i guess my 97 is different

take off belt ihad to remove battery to do this to make room ac lines in way

take off top cover

take off top alt mounting bolt through wheel well

take off plastic bottom cover plater

remove right fan

remove wires

remove remaining 3 bolts on altenator use 15 and17 ratcheting wrenches makes job easier

after alt falls remove metal acess pan from bottom and work alt till it falls out installation is reversal of steps

HINT INSTALL UPPER ALT BOLT FIRST THOUGH WHEEL WELL TO HOLD ALT IN PLACE

USE DUAL SIDED STICKY TAPE TO GET UPPER ALT BOLT STARTED

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The '98 Service Manual has 10 step program for generator removal (page 6-335+).

1. Remove the negative battery cable.

2. Remove the accessory drive belt.

(Okay, some of these are obvious).

3. Remove the radiator.

4. Remove the air conditioning condenser.

5. Raise and suitably support the vehicle.

6. Disconnect the coolant outlet hose from the generator.

7. Disconnect the coolant inlet hose from the generator.

8. More obvious stuff.

9. More obvious stuff.

10. Yet more....

There could be an easier-simpler-quicker method, but the dealer's shop will charge the time to do the above. How long can you listen to that bearing?

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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