Question about 1994 Buick Roadmaster

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I have a 94 buick roadmaster that won't start alternator is good and has new battery what else can it be.

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When you open up the hood look to the left .up in the left corner there's a metal box some kind of resister,,,the stud was melted...we replaced it for acouple of bucks and never had another problem,,,we have all data d.i. y. my husbands e-mail is cpinney@bayland.net he could explain it to you much better than i...e-mail him.

Posted on May 22, 2009

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HAVE YOU CHECKED ALL THE FUSES? IF YES THEN MAYBE THE STARTER IS DEFECTIVE. DO YOU GET A CLICK WHEN YOU TURN THE KEY? IF YES, THEN TRY TAPPING ON THE STARTER TO FREE IT UP, AS IT MAY BE JAMMED. IF YOU DONT GET ANY GOOD RESULTS, THEN TRY PUTTING THE CAR IN NEUTRAL TO START. IF IT STARTS, THEN THE NEUTRAL SAFETY SWITCH IS THE CULPRIT. HOPE THIS HELPS. PLEASE KEEP ME INFORMED. THANKS FOR AN HONEST RATING AND FOR USING FIX-YA

Posted on May 16, 2009

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Does it not crank over or just crank over and not fire?

Posted on May 16, 2009

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Car will not start. My '92 Buick Roadmaster won't


The battery connections on those are prone to corrosion and poor contact. Take the connections apart and clean them thoroughly. Use a wire brush, use di-electric grease on them.

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If you have climate control it could be the main processor. Something could be shorting the blower relay to keep it on. You would also need to check and see if the system is still full of freon.

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Its a fairly simple system. The alternator gets a signal from the circuit for the warning light and-or gauge to activate the voltage regulator inside the alternator. The large wire between the alternator and the battery or starter is fused for protection.
Could be a problem with that circuit back to the instrument cluster, or the circuit to the battery, or a ground connection. You could also have a second defective alternator.

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No power to anything. Battery is good, but not sure about the alternator.


if you had battery checked and it is good ,then the only other thing it could be is the cables to the battery, they my look good on the outside but they corrode on the inside. I would Start by replacing the cables first, they run about $12.00 per cable...If they are more than 10 years old i would replace them...

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I have a 1993 buick road master it runs great when its going.when i put it in reverse or turn the wheel to hard or come to a complete stop it cuts of but starts right back up can anybody help???


the alternator is weak. get a voltometer and test the positive and negative leads at the battery. they should test above 14 volts at idle, if they test lower than 14 volts, you need a new alternator.

Mar 12, 2011 | 1993 Buick Roadmaster

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I have a 1994 roadmaster, got the trans rebuilt and still won't shift properly. Hard shifts from whatever gear it takes off in to the next gear when first started, afterwards shifts easier, however it...


Steve, go to buickforums.com. They have a roadmaster section with a lot of dedicated roadies, some are fanatics in their loyalty to those Buicks. I believe there are a good amount of sharp people on everything Roadmaster. They should know all the ins and outs of that code 84 and what to do about it. Joining is free to register.

Now personally, I don't think a reflash can be done on a '94 model, that is still OBD-1, but I cannot speak with certainty.

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The throttle body should be cleaned. There are sensitive wires in there that can be damaged if the proper spray cleaner is not used. Have a diagnostic test done on it to pinpoint the defective parts.

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first thing is make sure your battery connections are clean, a little corrosion can cause a lot of problems at these low temperatures. make sure that the other ends of the battery cables are clean too. Hope this solves your problem.

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