My '95 Monte has developed a noise in the front of the engine. Sounds like
the timing chain, but it could be a bad timing belt pulley. I have ordered a
Gates timing belt kit, which comes with the belt and any required pulleys,
for $211 CDN. Will hopefully be doing it this weekend. Also looking into
replacing the timing chain at the same time.
I don't have a question, just wanted to post this note.
You assume correctly. I understand it's a tough job, just like anything I
replace on this car. Like the alternator, the intake manifold gaskets and
rear differential. I'm sure I'll get through it, maybe a few cuts and
bruises along with subsequent curses, but I'll make it.
Would I learn anything if I pay someone else to do it?
Definitely replace the two belt tensioners also. If you don't the new belt
may not last long. The only trick to the job is to have a pair of the cam
alignment tools. It's an easy job with these.
Steve I know that you are on this NG a lot, and I'd be willing to lend mine
to you. I bought a set from Kent-Moore when I did mine. They're $78.00 or I
could have paid someone $350.00 labor to do it.
Let me know if you want to use them.
I'm in Cincinnati Ohio. But UPS goes everywhere ;-)
Or you say that you have a machine shop available? I can draw these and send
the drawing as well. I can send you an AutoCAD drawing, DXF file or a
ProEngineer model. For that matter I can snail mail a drawing too.
Let me know what you'd like to do.
AutoCAD please. ;) It's not a machine shop, it's more of a fab shop. Saws,
drills, welders, sanders, grinders, a small milling machine and an endless
supply of steel. We make conveyors, I am the
technician/anythingelsethebosstellsmetodo guy. ;)
Steve I'm getting errors trying to post a file to the NG. So here are the
files for download. I'll also send them to you directly.
Let me know if you can't view them.
Frankly, it's a big enough job doing the timing belt without also
attempting to replace the timing chain. I wouldn't bother unless
you know for sure there is a problem with it. I've never had to
replace one on the 3.4 engine. It will make a big job even bigger.
If the engine was running satisfactorily for you....I would advise
you not to mess around with loosening off the cam sprockets. Just
take the front covers off first and see if you can see the original
factory paint marks on the sprockets. If you can, you will save
yourself time and grief by simply using those marks instead of
going thru the "special tool" procedure.
I would love to try and get away from doing the timing chain, but there is
this noise that sounds like the chain is hitting the front cover. Maybe the
tensioner is gone. I'm just going to replace the belt/pulleys, see if
everything is good. If not, then tackle the chain.
The timing marks are still there on the cam sprockets. I will take your
advice and try to do it without loosening them. I have 4 different manuals,
two Haynes, ALLData and the factory manual, I will combine them all, come up
with a good plan and do it.
Remember that when you look at the original timing marks, they
will not appear to line up...but this is simply a function of the
used timing belt having stretched. Usually, the front marks are
closer in time then the rear marks. With a new belt, they will
be quite close....don't get all excited if they happen to be half
a tooth off. You then have a choice, leave it alone, or do it
the hard (special tool) way if you want it to be "exact".
When you install the new belt, start at the dummy shaft sprocket
and then proceed counterclockwise thru the idlers and gears.
Take some time to learn how the tensioner works, how to retract
it and keep it retracted until you need to release it. You will need
something like a paper clip to keep it retracted. Tensioner goes
on last...and I also leave the eccentric idler out until I have the
belt around all of the other sprockets and idlers. As you progress
with the belt around the front sprockets...use something (those
office clips that hold paper work well) to keep the belt in place
on the cam sprockets. Do the same when you get to the rear
Hopefully, that will help you.
It's funny, on the way to work this morning I thought of a question to ask.
It was, "if I don't do it the "exact" way by using the hold down tools, what
do I do if the marks on the cams don't line up when the mark on the balancer
is lined up with the mark on the front cover?"
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