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1988 Buick Century - Page 8 Questions & Answers
1995. Where is the PCM located?
Those years of Buicks I think always had the pcm located under the passenger side of dash. Usually you have to remove the glove box to access it.
How to reset bcm
You find out what code or codes are stored in the BCM , FIX the problem then clear the codes with a scan tool not a code reader !
Loosen the idol pulley on a 1993 Buick century wagon
there are 2 methods for idler pulleys
all require to loosen the big nut holding the pulley on
some have a bolt at the back of the bracket behind the puller that you rotate either way to adjust off or on
others have a cog that runs on a rack that you turn up or down for the adjustment
remember to re-tension the big nut when finished as the method of adjustment is for adjustment only and is not sufficient to hold the pulley in position
1988 Buick Century stalls
Hi Deb, when it stops an won't start pull two spark plug wires off the same coil an crank it over an see if it has spark ! If it doesn't have spark you could have a bad crankshaft position sensor or ignition control module . If you have spark take the air cleaner box off or the flexible rubber hose from the air cleaner box to the engine off , just a couple of hose clamps . Spray some carburetor cleaner into the engine, because it's flammable ! IF you do this an it try's to start you could have a fuel pump problem or a bad fuel pump relay ! One more question , is your check engine light on ?
My 98 century first started
Larry
I assume the fuel issue is now sorted, you have good clean fuel now running through the system and contaminated fuel is not now causing the problem.
I also assume you have checked that the fuel pump is working properly.
If you have had some bad fuel or contaminants in the system I suggest you run the car on at least 2 full tanks of premium fuel before reverting to the usual cheaper regular unleaded. This will also help clean up the injectors.
If you have had problems with moisture in the fuel system do NOT ever use any fuel with an ethanol component. In any event I would never use any fuel containing ethanol in an older model such as yours. Ethanol is not only highly corrosive, but it also absorbs moisture(water) which will then settle in your fuel tank and cause problems once it builds up over a period of time. (This will occur
in any fuel tank). By the way Ethanol will slowly eat away at any plastic parts in the fuel system like plastic components used in some fuel pumps.
When the engine is missing under load as you have described (during hard acceleration or going up hills) it is often due to faulty spark plugs or the plug leads. More often than not one or more of the plug leads will be faulty.
If the spark plugs have not been changed in the past 24 months change them. Otherwise remove them and clean them and reset the gaps.
Renew the plug leads with good quality replacements and retest the vehicle.
I have a 95 buick
If you have bought the car from a person they may have done some work on the steering column, If they did odds are they cut the wires instead of taking the time of feeding them up through the column. If this is the case a new wiring harness for it is only about 30 bucks, but you have to pull the steering wheel, be very carefull if you have airbags. all the work in changing that out is unplug the old one and tape a wire to the end pull it out and tape the new one to the same wire and pull it back through. I hope that helps.
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