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89 prelude si problems

 
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Old 12-01-2014, 05:56 AM
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Icon9 89 prelude si problems

Hello to all you prelude owners out there im sorta new to owning this car and have been having issues lately im hoping someone has answers for me. I noticed that my clock was kind of dim on night and that my windshield wipers were moving kinda slow. So I got the battery checked and I needed a new one. So I bought a new battery. A few days later the idle started to bog at 1rpm. Cleaned the throttle body and nothing. Also the car jerks when I shift and if im in gear and let go of the gas it jerks as well. The problems continue. On my way home last night the electronics all went dim the radio shut itself off and the car nearly died on my way home. Could this be a bad alternator? Or something electrical? Please help the car won't start now. Any thoughts and or advice would be much appreciated.
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Old 12-01-2014, 10:59 AM
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Re: 89 prelude si problems

First make sure your terminals to your battery are NEW. I've had my power go out just cause of a bad positive terminal. Rock your engine forward and backward by hand. Most jerking symptoms are from a bad rear motor mount.
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Old 12-01-2014, 11:33 AM
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Re: 89 prelude si problems

Your battery isn't being recharged. Probably the alternator. But to be sure, just take it to pretty much any auto parts store (I use NAPA) and have them test it. They can check the entire charging system. They normally do this for free. If they tell you it's not free then take it to another store. Be sure to charge the battery fully before you take it to them though. If you don't have a battery charger then you should buy one. Anyone who owns a car should own a battery charger IMHO, especially a 25 year old car.

I agree with Les about the motor mount, only I wouldn't limit it to the rear mount. Chances are high that if the rear mount is bad then the other three mounts aren't far behind.
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Old 12-14-2014, 02:37 AM
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Icon10 Re: 89 prelude si problems

Forgot to reply but I appreciate all the advice everyone it was the alternator and after the new one was installed the problems all went away.
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Old 12-14-2014, 10:15 AM
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Re: 89 prelude si problems

Sometimes the green plug connector to the alternator can work it's way loose. So if you start getting a battery light flicker with your new alternator, check that. Many times it's plugged in well but when the rubber boot that covers said plug isn't properly...oh, what's the word I'm trying to use here?...seated...over the plug and the little ear like device isn't placed into the ear slot on the plug, a quivering engine can cause erratic connection of said green plug, leading to the same issue you've just solved B20.

I had the priveledge of acquiring a red 3g for a song because the owners wife was sick of the battery light flicker at 2000 rpm's. It had a brand new alternator and battery etc.
It did it to me at times. I'd pull over and replug it (car off of course), get back in and for several days be flicker free. One day while bending some pins for better contact I noticed this little ear thingy wasn't going into it's recepticle. Once that was corrected, I never had the flicker thing again.
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Last edited by bykfixer; 12-14-2014 at 10:22 AM.
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