Hello lysiphlebus2,
((My thoughts: cold START valve IAC at very bottom))
Plenty of places will do FREE diagnostic code reads.
I would rather suggest it be a muffler shop than
AUTOZONE... but either is better than guessing.
AUTOZONE will likely make you buy OXYGEN
sensors... (but that makes about as much sense as
buying a new THERMOMETER every-time you
have a FEVER.
What you are describing sounds (from an old
mechanic's perspective) like a collapsing
catalytic convertor or rotted muffler baffle
(a slightly better blockage will halt operation
completely)...
((again speculation... get your codes read))...
Do not buy OXYGEN SENSORS....
Know your prices before waltzing into any
exhaust shop.
AMAZON
1 24 of 108 results for Automotive 1995 riviera catalytic 1995 riviera...
rockauto
1995 BUICK RIVIERA 3 8L V6 Supercharged Catalytic Converter RockAuto
IAC (cold start valve)
1995 BUICK RIVIERA 3 8L V6 Supercharged Idle Air Control IAC Valve RockAuto
Hope this helps
Carnac the Magnificent
SOURCE: 95 buick riviera supercharger fan belt diagram
Sorry for the delayed response.
CLICK on the following LINK. It has the Belt Diagrams including the Supercharger you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...
Thanks.
http://www.2carpros.com/car_repair_information/year/1995/make/buick/model/riviera/1995_buick_riviera_drive_belt_routing_diagram.htm
SOURCE: 95 buick riviera supercharger
you can not put a regular 3800 intake in place of the 3800 super charged engine,the compression ratio is lower than the regular 3800 engine.......!
SOURCE: looking for wiring diagram for 1995 buick riviera
http://www.eautorepair.net/
you will get what you need for wiring
SOURCE: can i still drive a 95 buick riviera with a bad
if your supercharger sounds like tumbling rocks, it is the plastic coupler between the nose cone and the charger body; take off your serpentine belt; chances are the pulley has some play in it but it turns freely; the replacement coupler is a cheap fix; what gets a lil pricey is the labor to replace it... the buick has an alternator bracket that has to come off before you can take the nose off of the supercharger... dont forget to drain the oil from the nose cone with a spray bottle nozzle
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