I hope someone can help me I will try my best to explain I have a magna 1994 sedan 4 cyl. standing at the front of the car on my right side there is the alt with a belt on and behind that there is another belt which has snap can u tell what this belt is and how to replace it pictures of it would be a great help. I think it must have something to do with the water because it overheated when it snap.

I hope someone can help me I will try my best to explain I have a magna 1994 sedan 4 cyl. standing at the front of the car on my right side there is the alt with a belt on and behind that there is another belt which has snap can u tell what this belt is and how to replace it pictures of it would be a great help. I think it must have something to do with the water because it overheated when it snap.

On AstronII 4cyl you'll have...

1) belt driving powersteering and alternator, nearer radiator

and behind that

2) belt driving aircon compressor, nearer firewall (if you've got aircon)


There is also a little

3) water pump belt on the other side of the engine, drives pump off the camshaft



Replacing isn't hard, best to read the workshop manuals first but otherwise its
simply loosen all the various tensioning screws on alternator and pulley
then install the new belts. Best to change both belts.

Might as well change the little waterpump belt whilst you're at it too.

What Magna do you have cause if it's over heating after the belt snapped then you don't have a magna sounds like a Sigma. ?

What Magna do you have cause if it's over heating after the belt snapped then you don't have a magna sounds like a Sigma. ?
not many ozzie Sigmas from 1994...


When I finally replaced my TN's waterpump belt, it was missing 2-3 1" chunks. :confused:

easy , i did it the other day. the first page shows u what the belts and pulleys look like . and the second pic shows the adjuster bolt which is to the right of the left hand mount and to the left of the idler pulley. that should give u enough slack to take it off and use it also to tighten up. defection of the belt is to be between 9mm-12mm, so the manual says.

standing at the front of the car on my right side there is the alt with a belt on and behind that there is another belt which has snap can u tell what this belt is and how to replace it pictures of it would be a great help. I think it must have something to do with the water because it overheated when it snap.

The car won't overheat when your air con belt snaps it's why I'm confused about this. I think it might if the alternator & power steer belt has snapped.

well, when he aircon is turned on, the radiator fans turn on automatically. That might be the connection

I think its the water pump is there a special way of changing it because I put the new belt on turn on the motor and its just spinning. the belt is just burning rubber

are we talking about the same belt u first talked about??
as for the water pump belt thats on the drivers side and its the smallest. if its sliping u dont have it tight enough. the water pump belt shold have a deflection of 5mm - 1/2 a cm.
were as the other 2 should be 9-12mm - 1cm-1.2cm.now if its tighter than 1/2 cm ull wear out the pump bearings. what i did was losen all the bolts swaped the belt over and grabbed
a long handled screw driver and used that as a lever to get the belt tight and held it in place till all the bolts are tight (snug).

I'm confused about this too it sounds like he's discribing the sigma engine no the magna engine ????

i took sum pic to make sure we know what u mean and so we're on the same page

now the first pic shows the water pump, water pump belt and the alt belt
http://img100.imageshack.us/my.php?image=frontend8dj.jpg

now the second pic shows the air-con belt

http://img88.imageshack.us/my.php?image=passengerside3vw.jpg


now the first belt u metioned is in the second pic towards the back passenger side, and the second belt u metioned is in the first pic on the drivers side attached to the motor

I just checked his profile and it states the following.



Engine Hardware:
3.5L 6G74 SOHC 24 Valve V6


So is it a 4cyc or a V6 ???

yea i noticed that to but most member have there profile like that, so i did think anything of it.

i took sum pic to make sure we know what u mean and so we're on the same page

now the first pic shows the water pump, water pump belt and the alt belt

now the second pic shows the air-con belt

yep you've ID'd the right belts & the waterpump.

Looks pretty much like my TN with AstronII to me; changed at least 2 sets of belts on that in my time.


I don't know what happens if the aircon belt breaks, usually nothing (other than aircon not working). But there's a slight chance that it may also stop the radiator fan from running.

Or the compressor's clutch soleniod may be drawing so much electricity (when aircon is swiched on even with compressor not moving) that there is insufficient voltage to trigger on the fan relay... so the radiator fan doesn't come on when it should.

(it happened to me once, took forever to diagnose too... was due to using turdparty relays in the fusebox. Fixed that by getting some OE Mitsu relays from the wreckers.)


TN's radiator is blocked by aircon condensor so it don't get much airflow if the fans aren't working. AstronII will get over-hot when sitting in slow traffic even with a good radiator and good waterpump (mine was looked after well). Worst still when running R134 in the aircon system.

To counteract it, installed 3 fans... std fan at RHS behind radiator, a carby engine's fan at LHS behind radiator (*just* misses EGO sensor) and a EFI engine's aircon fan at front - blowing into condensor.

I'm confused about this too it sounds like he's discribing the sigma engine no the magna engine ????


I have a magna 1994 4 cyl

i took sum pic to make sure we know what u mean and so we're on the same page

now the first pic shows the water pump, water pump belt and the alt belt
http://img100.imageshack.us/my.php?image=frontend8dj.jpg

now the second pic shows the air-con belt

http://img88.imageshack.us/my.php?image=passengerside3vw.jpg


now the first belt u metioned is in the second pic towards the back passenger side, and the second belt u metioned is in the first pic on the drivers side attached to the motor


Thanks for the cool pic the belt I am looking at that i replaced is the air con belt i got confuse there as someone told me over the phone that it was the water pump. So yer i replace that and its just burning rubber could it be that the belt is not tight enought and when it snap its did overheat the needle went straight up to the end and there was no water in the plastic water bottle but there was plenty in the radiator i think thats why i thought it was the water pump

Glad that's straightend out might want to update your profile there as well.

undo the air con belt and reach down to the air con pully and see if she is spinning freely with a push of your fingers if not then I say your air con has sezied up either that the pully tensioner is sezied also check for free play on that as well.

FOLKS ARE DUMB WHERE I COME FROM:nuts:


I will start at the beginning my son all of 18 has taken my car for a ride after awhile he rings me up to tell me that he has broken down I went to his aid and he points to the air con behind the started motor and says that the belt is missing from there and assumed that the broken belt he had in his hand comes from there so I went along with it. Since coming on here and asking for help I have worked it out that the belt came from the water pump. I have fix this problem and now I am back on the road I also want to mention that I am a 43 year old single mum and don’t have much money to spare all the help that you have given me has saved me some money. If it weren’t for your help my car would have to sit there until I could afford it which is not for awhile. I am sorry for all the confusion but I got there in the end thank you. :bowrofl:

glad to hear it all fixed. we're hear to help so dont hesitate to ask. oh and by the way ur profile say 1994 TN (TN was 1988), urs must be a TR or TS. not having a dig at ya just letting u know what u have.

does ur car look like the one in this pic