I have a steady drip at the bottom of my crankshalf pulley. Basically there
is a drop in about 5 seconds after the engine has stop and a small puddle
overnight. I have checked around the water pump within engine bay but could
not see anything. It is bone dry from engine top all the way down to water
pump pulley. So my guess is around water pump or behind water pump. Does
anyone know what may be the problem? Should I remove the water pump to
check behind to see if something is broken or it is the water pump itself?
If it is the water pump, how come I can't see my leak source?
Thanks for the help.
I have reviewed all possible ways I can think off to remove the water pump.
To me the only way to remove the water pump for this supercharged model is
to loosen the powersteering bracket (even this is a challenge) I have
removed two metal pipe for water heater to access one the bolt for
powersteering bracket. So far I have not touch the water pump itself yet.
My question is:
Am I on the right track?
Do I have to remove engine mount bracket too?
Has anyone done this before that can point me in the right direction?
With the metal pipe for water heater removed, Do I need a new O ring? Not
that I don't want to buy it. Just no transportation at this moment since
the car is out of order.
Disable airbag before doing anything, book tells you to.
1. Remove negative battery cable.
2. Drain coolant.
3. Remove drive belt.
4. Remove coolant hoses at water pump.
5. Remove coolant pump pulley bolts (long bolt removed through access hole
provided in the body side rail), then remove the pulley.
6. Remove torque axis mount.
7. Coolant pump attaching bolts and pump.
To remove torque axis mount:
1. Lift engine slightly to remove wieght from mounts.
2. Remove through bolt from engine mount.
3. Lift engine until power steering reservoir touches strut tower brace, the
loosen bottom two bolts on engine mount.
4. Remove A/C line clip, then the top two bolts from engine mount and remove
this desc. does not sound like mine car. The pump is mounted in front of
the engine with no coolant hose attach to. Basically the replacement pump
or pump assembly (half pump) design to fit in an existing coolant channel
that is part of the front engine assembly. The problem I have is the large
casting that supporting power steering and belt tensioner is blocking one of
the water pump bolt. I have checked the manual and convince that this large
casting only available on SSEi model (two belts option).
I have recalled that someone form this newgroup has dealt with this similar
problem about a year ago. I would like to know if there is an easy way to
replace the pump?
Got it. 1993 procedure doesn't say anything about the S/C, but the 1994
model does. Says to remove A/C splash shield, drain coolant, remove belts,
move coil pack out of the way, remove S/C belt tensioner, remove engine
support fixture, remove engine mount, remove power steering pump, remove
engine mount bracket, remove idler pulley, remove water pump.
I'm not sure exactly, but in every procedure in which you need to disconnect
the negative battery cable, you're supposed to disable the air bags first.
Why you have to disconnect the battery to change a water pump? I'm not sure.
Maybe because you have to move the ignition module out of the way and since
it's electronic, they tell you to disconnect the battery as a safety
percaution. Or maybe a long time ago some dumb ass arced out the battery
while under the hood and blew himself up so they made disconnecting the
negtive battery cable common practice to help avoid this.
Maybe someone who has taken techincians course can tells us more.
It's a "cover your ass" type of thing. If you are nowhere near the battery
and/or positive/live wires/cables....it's a waste of time. I can certainly
you that I do not disconnect the battery for 90% of the procedures that
I do at work. It's common sense stuff that you disconnect the battery
for. Like if you are replacing the starter.
LOL, that'd be funny to see. Not disconnecting the battery while replacing
the starter. I find myself disconnecting the battery whenever I am doing
anything fuel or electrical related. Except for minor things like sensor
replacement. If I'm messing with the PCM, it's disconnected, if I'm messing
with my stereo, it's disconnected, if I'm anywhere near an airbag, they are
disabled and the battery is disconnected.
I have replaced my water pump. I have S/C. I do have the GM manual and
does not show step by step instruction. A bit of information here and few
more on diff pages.
Here are the steps:
1/ disconnect batt.
2/ remove alternator
3/ Drain coolant
4/ remove power steering pump (access the bolts through the pulley)
5/ remove power steering/ alternator and S/C belt tensioner support frame
6/ loosen engine support mount (jack under engine oil pan)
7/ remove water pump
Just changed my water pump on my 93 bonneville 3800.. my only input would
be.... drain the radiator, remove belt, jack up and brace the engine(only
place is under the oil pan).. pull the motor mount off ( passangers side)
then remove the water pump...its really not that bad of a job considering
the incredibly stupid idea of having 2 of the water pump bolts and a very
small section of the water pump behind the motor mount.
I had a leak on my 3.8 Regal . It was coming from where a hose comes
from the thermostat housing to the block underneath the alternator
area. The plug that screws in the top of the block fails quite often I
am told and that is why the part is now metal and not plastic. Just a
thought. Just wiggle the hose and anti freeze might spray out.
All fixed! I drove around the city once and check for leak. Everything
seems to be working fine.
The job took me about 7 hrs. Once I knew the power steering pump and its
bracket has to come off, the job start to move quickly.
The most diff. part of the job is powersteering pump/ bracket and engine
mount. The rest is easy. I had replaced water pump for 3.8 L engine
without supercharged. This job is far more complicated. I am relief to see
some antifreeze residue behind the water pump pulley. I really don't want
to do this job twice. So I took the time to check all other hose and
connections, the large fitting under my supercharged like someone has said
here as well. All looks good.
I took a few pictures just incase someone here may needed.
Thank you all for the tips.
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