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there should be a decal under the hood somewhere that shows the belt routing. if its gone you can probably go to the library and find a book of your car that will show the routing and you can either draw a picture or take a photo of it.
The overheating might be caused by a thermostat stuck closed, have it replaced. That should fix the overheating, as for the hesitating, run a scan on the ECM module to make sure you dont have any codes, clear if any and fix anything that might've gotten damaged from the overheating.
((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.
Good engine 28 mpg+ hwy. These 3800 engines had upper intake problems and would leak coolant into the combustion chamber. The new ones were re-designed and do not give any trouble. My 90 buick 3800 has 295000 miles on it. If yours is supercharged it does not have that intake problem.
Too complicated to explain here...buy a Chiltons Manual at Auto Zone or NAPA $25...not too bad of a job but you should have a thorough knowledge of tools. Good Luck
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