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Sedans Buick Park Avenue Buick Park Avenue Engine Problems
46 messages, Last post on Oct 11, 2009 at 7:46 AM
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Replying to: jonif (Mar 20, 2008 10:00 am) When my 98 had it's last plenum failure, I would attempt to crank it with no luck, and after I turned my key off the gauges would jump up and down for a second or two. After pulling the plugs, I tried the starter again with the same results - no crank even with a jump. I then put a breaker bar / socket on the end of the engine to make sure it would turn over and it did. I then pulled the two starter bolts, and backed the starter out and then put it back in place and it would then crank again. I'm just guessing that the solenoid or bendix was stuck. I believe what happened was the starter may have jammed against the ring gear in the extended position, draining the battery.. but that's just a guess.  Ended up with a weakened battery that had to be replaced, which again makes me think something was shorting it out with lots of amperage ability like a starter. Would like to know how your's went, Joni. I'm guessing starter related issue. Your answer may help someone who reads these forums in the future. 
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I have an issue with my 2001 Park Ave. Cold start is sluggish and hot start is sometimes real sluggish. I have an rear seal oil leak and a tranny cooler line leak, not major ones. I'm thinking it may be the fuel pump? Any other thoughts, anyone had similar issues with the 3800 engine.
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Replying to: rolexy68 (Jun 17, 2008 6:25 am) Check the FPR (fuel pressure regulator). It looks like a top hot with the fuel line coming into it and it sits on the fuel rail on the front of the motor. Another line goes to the front of the throttle body; it's a vacuum line. Pull off the vacuum line at the FPR and see if there's liquid fuel in it. There shouldn't be. The FPR still could be defective. Also try turning the key to ON without cranking after the car sits overnight. Then to OFF and back to ON for a few seconds. You'll hear the fuel pump run for about 2 seconds and turn off. That's what it's supposesd to do to prime the pressure if there's been a drop in the line pressure while standing. Do that a total of 3 times. On the third time crank the motor and see if it starts quicker. That could indicate the pressure valve that doesn't let fuel back into tank is leaking and draining the pressure. Unless the tank has been run low on fuel a lot, below quarter regularly, the chances of a pump failure as low. Report back with any observations you make for me.
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Replying to: imidazol97 (Jun 17, 2008 7:06 am)
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Replying to: rolexy68 (Jun 25, 2008 5:01 pm) The FPR does sometimes get replaced even if it's not leaking fuel into the vacuum line controlling it. But I'd want to know it's bad before doing that. It can be replaced at home if you have some mechanical skills. |
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I just purchased a 2000 Park Avenue. The independent dealer I bought the car from said that they were having problems with the car starting and that he put a new fuel pump on the car. Since I have been driving it on the 2nd day the service engine soon light has came on and the car will act like it is not getting enough fuel while being started, if you press the gas pedal while this is happening the car runs fine. Sometimes you can feel the car revving the engine up by itself. Also somtimes the car starts fine. I am taking the car back to him Sat. but was wondering if anyone had an idea what is causing this. The car has 93000 miles on it. There is no missing in the engine and the car drives great. Thanks, Wornslick
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Replying to: wornslick (Jul 21, 2008 4:41 pm) Also I'd check the fuel pressure regulator FPR. There were recalls on some of those and they apparently do fail from the chatter I read on several forums about 3800 motors in H bodies. You can check one way for failure of FPR by pulling off the vacuum line from the FPR and looking for gasoline leaking into it. It sits right along the front of the fuel rail for the injectors and has a fuel line to it and a single vacuum line. You can also check for bleedback of pressure into the fuel tank (or through a rusty fuel line) by turning the key to ON and then off afteer 3 seconds when the fuel pump turns off; repeat two times. Then start the car. This pumps up the pressure.
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Replying to: imidazol97 (Jul 21, 2008 5:09 pm)
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Replying to: wornslick (Jul 22, 2008 2:43 am) |
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