1997 Buick Park Avenue Wont Accelerate

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Johnny

1997 Buick Park Avenue Wont Accelerate

Unread post by Johnny » Thu Nov 01, 2012 3:12 pm

1997 Buick park ave 3800 check engine light.
Replced new spark plugs, good injectors, new oil, fresh antifreeze.
When I step on the gas in drive the car wont give the prooper speed. It takes a minute to catch up like a vaccum hose is misplaced. IS there a diagram of the top of a 3800 motor that I can see how everything is hooked up?

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ProTech
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Re: 1997 Buick Park Avenue Wont Accelerate

Unread post by ProTech » Thu Nov 01, 2012 6:16 pm

There should be a sticker somewhere under the hood that shows an emission diagram as well as vacuum line routing. I'd also recommend getting it scanned to see what trouble code has set, as that might be helpful in diagnosing your acceleration problem. Other things to check are the PCV valve, make sure both o-rings are in place, otherwise it will cause a large vacuum leak. Also check the vacuum tubing from the fuel pressure regulator and EVAP purge solenoid to the throttle body area, that all is one part and should never be repaired. You may also want to check the fuel pressure regulator for leaks as well, while your checking that vacuum connection. Hope you find your problem!
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mmcginley497
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Harmonic Balancer - 1993 Buick park avenue 3.8l v6

Unread post by mmcginley497 » Sat Aug 17, 2013 1:14 pm

1993 Buick park avenue 3.8l v6

Issue just started - out of rhythm knocking or banging from best area.

This is a video I took of it yesterday:

http://www.youtube.com/watch?v=zhlQ9pQZ ... e=youtu.be

Any thoughts or ideas would be appreciated. Thanks in advance.

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carriedi
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Re: Harmonic Balancer - 1993 Buick park avenue 3.8l v6

Unread post by carriedi » Mon Aug 19, 2013 10:11 am

check and make sure the crank bolt in the center of the harmonic balancer isn't loose. Is the belt pulley part of the balancer or is it bolted on?
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TerryAuto
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Re: Harmonic Balancer - 1993 Buick park avenue 3.8l v6

Unread post by TerryAuto » Mon Aug 19, 2013 4:38 pm

Kind of hard to tell with that video, but it sounds like either a bad spot on the belt, the tensioner is popping, or yes, the harmonic balancer is bad. Check the whole belt to make sure there is not a small part hanging off.

When the balancer fails, the rubber inside that separates the outer belt pulley from the balancer is broke or worn out the 2 pieces clunk and pop together.

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