Question about 1984 Buick LeSabre

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I have an 84 Buick Lasabre limited. It had the origaninal timming chain on it. well i replaced it. Now every time i get on the gas from 3rd gear to 4th gear it slows down. I checked my plugs, and all my vacuum lines. They are all ok. cold it be my Cadillac converter? If so can I take it out and the car still run?

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Well, with your description, it seems that your car was running properly before, but is that really the case? Why was the timing chain replaced? Was there a problem?

So, did the timing marks line up perfectly? did you reset the ignition timing?

Really, you do not want to remove the catalytic converter, ever. It is a key piece to maximum performance. Not racing performance, but the best that your car can be...

If your engine malfunctions for an extended period of time, the converter can be damaged, but fix the problem, and replace the converter.

Posted on Sep 09, 2009

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Catalytic converters tend to act up at high volume output or higher rpm values same for inadequate fuel pressure it wil perform well at lower rpms and lower power demands but as soon as the rpms or throttle demand increases beyond a certain point the car will bog or lose power, or in your case doing the chain you may have the timing chain off one tooth, check this by bringing the engine to Top Dead center firing stroke line up the timing marker on the front crank pulley with the pointer and remove the valve cover if on number one cylinder ( or front two valve rocker are under no pressure ( you can phsically move them them your ok, if not re set the mechanical timing you did the job wrong.

Posted on Sep 09, 2009

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spray a little starting fluid or gas in the air intake (without the air filter) ... if it starts and runs for a few seconds then the ignition system and timing belt are likely ok .. you should then check the fuel pump and fuel filter ( a mechanic would test for fuel flow and pressure) .. you could have a blown fuel pump fuse ..if your car starts after spraying the starting fluid and continues to run but very rough .. then you might have water in the gas (more common as weather changes cause condensation). ... if the car doesnt start even with the starting fluid then you likely have an ignition problem .. you can remove an ignitiion wire and test for spark as the engine turns over ... if there is no spark then you could have a bad ignition module, coil or other ignition component.. if your lasabre has lots of miles on it you might check to see if it has a timing belt vs a timig chain .. the bels have a limited life time and can break or skip a tooth ... if it startted and ran a few seconds with the starting fluid then the belt is not the cause.. .

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you need to rotate your crankshaft 360 and bring the dot to the top so it corresponds with the dot on the camshaft, once youve got the two dots together you should be good to go.
hope this helps
good luck and please leave your feedback it you would please.
thanks

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