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Buick Park Avenue Engine Problems

46 messages,  Last post on Oct 11, 2009 at 7:46 AM

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#44 of 46 Re: 91 park ave won't start [dano32] by bowfan Oct 10, 2009 (9:55 am)
Replying to: dano32 (Oct 06, 2009 12:40 pm) Sorry you're having all these issues with your daughter's car. Sounds like you've eliminated the problem with the wiring that sometimes fails in the steering column for the passkey 2 security system by bypassing with a jumper wire? I'm guessing the '91 has the PK2 system that is made up of a resistor in the middle of the key? I know they are PK2 in '94.   Is the car's engine not turning over at all now? or turning over normally and just not firing anymore? obviously it must have been turning over if it ran for 10 sec then died. Have you tested the fuel rail to see if you have fuel and it is pressurized to the correct pressure?   I don't know how to test the coil pack & module, but I think they are pretty reliable. I don't have a '91, but guess the coil pack is made up of 3 separate coils that each control 2 plugs like the later models? I doubt all 3 would go bad at once.   Of all the parts you've replaced, I would say the crank position sensor would be the part most likely to be a bad replacement part. Sometimes they are just flaky out of the box. Or that's what I've read a few times. Whether that means someone put their bad part in the box and returned it to the store, I don't know. Normally electrical parts are no return, but it happens.
#45 of 46 Re: 91 park ave won't start [dano32] by imidazol97 Oct 10, 2009 (11:01 am)
Replying to: dano32 (Oct 06, 2009 12:40 pm) You've replaced a lot. Have you diagnosed when it doesn't start if it has spark? Put an old plug in a plug wire and lay it on a grounded part of the motor while you crank. Are you getting spark?   Take a 194 little light and straighten the prongs and plug them into your injector. Does it flash while you crank to show the injectors are being pulsed?   Does the fuel pump prime when you turn the key to ON? Listen at the tank while someone turns the key on to check for pump running. But it can still be bad.   Then try a fuel pressure gauge (I think local box stores loan those out) to see what the fuel pressure is. Replies to this message: dano32 (Oct 11, 2009 7:46 am)
#46 of 46 Re: 91 park ave won't start [imidazol97] by dano32 Oct 11, 2009 (7:46 am)
Replying to: imidazol97 (Oct 10, 2009 11:01 am) thanks for the respnses guys... i don't have spark, ( i use the spark plug to metal test) and my fuel pump is working...at least well enough to start and run, though i haven't tested the pressure yet. I do have a new fuel filter though because the first time it wouldn't start, i replaced it. That's my go to "turns over but won't start" move because it's often been the problem and if it isn't...it most likely needed replaced anyways!! lol Man i hope i didn't get a bad crank sensor, cause it's kind of a pain to change out. I'm almost wondering if i have some bad wires going to my module, i can't figure out why the brand new one ran for a couple weeks and the used one went out after just seconds. oh, for bypassing that stupid alarm, i put an ohlms tester to the key, then went to the local car audio dealer, got a one piece resister and just wired it directly in...worked pretty slick!!

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