How do you replace a timing belt on a 1991 Dodge Colt Vista?
Sincerely, I recommend you buy a shop manual. Haynes or chiltons
(for the inexpensive cost) are good manuals to consult. I use Motor
or Mitchl manuals.The job you are questioning is quite an involved
You must at least, posess good mechanical skills. As this
proceedure, if not done correctly, will render ur car useless. It
basically involves removing parts and placing them back but, you
must have the proper tools and, the manual in order to see the
pictures or Figs.
Still want to know? Ok. Keep in mind, that this is a 2 man job,
and that this procedure works better for an engine that has the
existing belt still, but will work on one that has broken off. It
just has a few more things to consider.
1- Apply emergency brake.2- Raise vehicle and support with
stand.3- Remove front left wheel.4- Jack up engine a bit, to
relieve weight on motor mount which must be removed on that same
side the wheel came off.
5- Remove #1 sparkplug and bring that #1 piston to TDC. (Top
Dead Center) To do this, have someone tap-crank the engine till u
can visually see the piston come up. Important: #1 piston must come
up on compression stroke!! In order to figure this out, use either
of two ways. Either place a rolled piece of tissue onto the opening
of the sparkplug hole, (as piston comes up on compression stroke
ONLY, the tissue will pop out). Or, if you can block the hole with
a finger (just snug) you will feel the compression blow by your
finger. This SHOULD bring the timing marks to their respective
Note: (If you DONOT feel pressure come out of the sparkplug
hole, you may have really bad piston rings. If so, this work is not
needed, another engine is).
6- Disconnect NEG battery cable.
7- Remove motor mount.
IMPORTANT= Before removing all I am about to explain, you MUST
loosen the Crankshaft center bolt first!! With the help of all the
belts still on it will be hard, but, you must find a way to stop
the lower crankshaft pully from rotating! If this pully rotates,
the #1 piston will loose its correct timing position and YOU MUST
re-do step #5 ((I KNOW, I HAVE DONE THIS)) If you do not have a
tool that can hold the pully, you can try this.> NOTE: some
people use a pry bar and wind up cracking the pully! Don't do it to
that point. This pully has several holes in it. Using a chain, Bolt
it at top where the motormount goes. Bring the slack down along
side this pully. Find a small bolt that will fit in the holes with
out having to screw in. If it does, all the merrier.
8- With the chain in place, place a pry bar (big screw driver
like tool) in between engine and pully (with EXTREME caution)not
crack anything plastic or the edge of the pully, or with causing
warpage. (sorry, this is one way if you do not have that special
tool that holds this pully).
NOTE: you must remove the lower plastic cover under the engine
just in the front!
Now, when you removed the wheel, you did it so you can access
this little hole that is covered by a rubber cap, remove this cap.
Thru this hole you will see the crankshaft bolt. NOTE: if it does
not seem aligned, lower or raise the jack to make it aligned. Place
the correct size half inch socket over the nut. Insert a half inch
ratchet extension, and attach a breaker bar to it. Place and hold
the prybar in place and have the 2nd man turn the breaker bar
counterclockwise until she breaks loose. THIS MUST BE ACHIEVED
9- Now remove belt by loosening the alt tensioner to slack the
belt, and any other component that has a belt (ie, A/C, pwr str
etc). Once this is done, begin lossening the screws or bolts to the
pully of the water pump and crankshaft. They basically have 4
screws ea. Crankshaft pully has the center bolt too, remember! (DO
NOT MIX THEM with others)
AGAIN: DO NOT allow crankshaft pully to budge!! Once the crank
pully is off, you will notice its timing mark by means of a pin on
the gear. Now, the timing mark which is to match with this pin
looks like a pimple and is located at a 1'Oclock position on the
engine. (In other words, look at this gear as if it were a clock.
The little hand MUST be pointed to 1 O'clock. Once the pullys are
off, remove the timing belt covers (2 pcs). There are several 10mm
screws- don't mix them.
10- Now, at the top, you will see the camshaft, which will
reveal part of the belt. What you want to check for is the timing
mark on the belt pully sprocket (THIS ONE STAYS ON -DONOT REMOVE).
This mark is in the shape of a triangle >. This mark must be
pointing to 3 O'clock, at its counter timing mark, which is located
about an inch away on the engine head. AGAIN: You must have a
manual in order to understand this. If it is not, careful rotating
adjustment must be done so that ALL timing points match.
11- Now you must just loosen the timing belt tensioner spring (a
spring with a bolt thru it)
12- Now loosen the timing belt tensioner (the bolt is on the
right side of it)
13- Once this is done, the belt can now be removed.
TO REPLACE.. follow these steps in reverse order. Make sure to
check timing afterwards with timing light.
IMPORTANT: You can tell if #1 piston is at Top Dead Center, by
removing the distributor cap and checking to see, that the rotor
points to #1 wire on the cap. The distributor cap has the numbers