1999 Oldsmobile Aurora
Engine size = 4.0 V8
Random misfire codes
Codes = only the random misfire (cant recall num right now)
Repair done prior = just bought car-new plugs and wires, last person only
burned 87 octane, still has that in car due to car not yet street
legal (no plates/insur
Done to repair = none that I know of
tip/donation yes
tech = trans issue shifter problem
question = just bought car = 2problems 1) when starting dtc shows
random misfire. the only possible solution right now is that the previous
owner only burned 87 octane and that is still in car due to car is not
yet legal to drive (cant get gas), I know this may be the problem but
after it warms up it's ok, this is just a problem within the first 10
minutes or so of starting warmup time (depending on outside temp). do you
think a coil could be an issue, recent new plugs wires (good ones) and
plugs put in. the engine sometime revs up high (2000rpm's) then back
down every time I barely touch the gas to try to help warm it up. 2)=
this is the real problem with me= during startup, the button on the floor
console shifter will not release out of park into any gear until car
has warmed up, this could be 5 minutes=warm outside to 15 minutes=cold
outside time. I will then hear the electronic noise of the pin release
(or whatever it is) and then the button can be pushed in, there is !
definitely something holding it back until warm up. the only thing I
can think of is that olds built in a saftey that when the trans oil
life=100% (which the dash computer currently shows) it makes you wait until
trans fluid warms up first??, and how do you reset the computers trans
oil life back to 0%??, does that require a dealership visit for a
trans tuneup??....thanks much
SF:
Hello and welcome.
Thank you for the tip/donation.
Ignition coils could be a concern with this. Usually they have corrosion on the towers, which
would have been seen during plug wire replacement. You may have sticking injectorsor a
possible vacuum leak. Also, a leaking fuel pressure regulator will cause randon misfires
until the system is cleared out. Tapping the gas, and rpm's go high, is normal for this
engine. If you have a vacuum leak, that would make it worse.
Trans. fluid temp has nothing to do with not being able to press button/put in gear, nor
does oil life. Oil life is always at 100% until needs to be changed, then goes down. I would
say someone hase changed the fluid at some point,and it was re-set.
Sounds like you have a problem with the shift interlock solenoid. This is what releases the
button when pressing on the brake pedal. Either the solenoid in the console is weak, or the
actual button is sticking. Very common for pop or other material to be spilled in the shifter
console, and GUM-UP the button. Either way the upper console trim would have to come
off. Not a very easy thing to do. Very easy to break the wood grain trim(very expensive), or
the shifter boot.
Back
Engine size = 4.0 V8
Random misfire codes
Codes = only the random misfire (cant recall num right now)
Repair done prior = just bought car-new plugs and wires, last person only
burned 87 octane, still has that in car due to car not yet street
legal (no plates/insur
Done to repair = none that I know of
tip/donation yes
tech = trans issue shifter problem
question = just bought car = 2problems 1) when starting dtc shows
random misfire. the only possible solution right now is that the previous
owner only burned 87 octane and that is still in car due to car is not
yet legal to drive (cant get gas), I know this may be the problem but
after it warms up it's ok, this is just a problem within the first 10
minutes or so of starting warmup time (depending on outside temp). do you
think a coil could be an issue, recent new plugs wires (good ones) and
plugs put in. the engine sometime revs up high (2000rpm's) then back
down every time I barely touch the gas to try to help warm it up. 2)=
this is the real problem with me= during startup, the button on the floor
console shifter will not release out of park into any gear until car
has warmed up, this could be 5 minutes=warm outside to 15 minutes=cold
outside time. I will then hear the electronic noise of the pin release
(or whatever it is) and then the button can be pushed in, there is !
definitely something holding it back until warm up. the only thing I
can think of is that olds built in a saftey that when the trans oil
life=100% (which the dash computer currently shows) it makes you wait until
trans fluid warms up first??, and how do you reset the computers trans
oil life back to 0%??, does that require a dealership visit for a
trans tuneup??....thanks much
SF:
Hello and welcome.
Thank you for the tip/donation.
Ignition coils could be a concern with this. Usually they have corrosion on the towers, which
would have been seen during plug wire replacement. You may have sticking injectorsor a
possible vacuum leak. Also, a leaking fuel pressure regulator will cause randon misfires
until the system is cleared out. Tapping the gas, and rpm's go high, is normal for this
engine. If you have a vacuum leak, that would make it worse.
Trans. fluid temp has nothing to do with not being able to press button/put in gear, nor
does oil life. Oil life is always at 100% until needs to be changed, then goes down. I would
say someone hase changed the fluid at some point,and it was re-set.
Sounds like you have a problem with the shift interlock solenoid. This is what releases the
button when pressing on the brake pedal. Either the solenoid in the console is weak, or the
actual button is sticking. Very common for pop or other material to be spilled in the shifter
console, and GUM-UP the button. Either way the upper console trim would have to come
off. Not a very easy thing to do. Very easy to break the wood grain trim(very expensive), or
the shifter boot.
Back
Read my comment here (34)
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