3S-FE Timingbelt, and now; Temp gauge problem

**MarkIIRx12** · 07-09-2006, 06:50 AM

Hi

Im installing a new timing belt on my carmy with 3s-fe, but i have some problems finding the marks where the cam and crank should be when i remove the old belt.

Does anyone have some info or remember what and where the marks are?

Thanks in advance for your help

**jonra23** · 07-09-2006, 07:00 AM

Engine on #1TDC, align hole in cam sprocket with notch on head.

regards
jon

**MarkIIRx12** · 07-09-2006, 07:25 AM

Thanks for your answer

I found that hole on the cam sprocket, but the strange thing is that the head doesnt have a hole at 12'o clock like in that picture, its more like 9,o clock, and that hole is very tiny, so im not sure if its correct.

is it correct that the cam sprocket hole is 9 instead of 12? if i move it to 12'o clock, then the cranck sprocket doesnt hit any marks at all..the crank sprocket doesnt have any arrow or marks wich i can see other than a round spot, wich is very hard to see if it stands or 0 degrees or not.

i find this engine very hard to be sure i got it aligned to the correct marks, does anyone have some more tips or info?

Thanks again

**jonra23** · 07-09-2006, 07:30 AM

If you haven't taken the belt off yet put crank on 0 degrees and see where top pulley is.
Remove and replace belt without moving cam pulley and timing is right.

regards
jon

**MarkIIRx12** · 07-09-2006, 07:42 AM

Thanks again

The belt is still on, but i tried to loosen the tensioner, and the belt slackens a lot, wont it be hard to get the new belt on on the exact same tooth? seems to me it will be very easy to get it one tooth wrong, or am i just worrying too much?

**jonra23** · 07-09-2006, 07:47 AM

Just make sure that when you put it back together that there is any slack in the belt is on the tensioner side so that doesnt pull timing out of sync when tensioning.

If you are worried about it mark the old belt and the sprockets with a marker pen before removing it, count the number of teeth between marks and mark new belt the same, use that for a double check when reinstalling.

regards
jon

**MarkIIRx12** · 07-09-2006, 07:52 AM

thanks again

I will give it a try and see how it goes, hopefully i will get it right at first try

**Cruiser97_80** · 07-09-2006, 11:47 AM

Before removing your old belt mark your camshaft pulley and head so that you have something to align with once you put your new belt on. Same goes for your crank pulley.
Best to mark it before you release the tension on the belt.

**Dale** · 07-09-2006, 01:06 PM

Get your crank pulley to TDC before taking it off by using the markings on the timing belt cover, index the cam tooth that lines up with the marking on the timing belt cover with a white out pen, and mark it on top of the cover as well. Take note of where the crank pulley sits, the notch in it that the harmonic balancer sits into will line up with a marking on the back of the block (see the picture I attached), just note which tooth it lines up with to make it easier to line up.

http://dalec.clan-umr.com/celica1/tech/tdc.jpg

That's on a 3s-ge.. I don't know if 3sfe blocks are the same? I'd imagine they'd be similar..

It is easy to get them out by a tooth when putting a new belt on, or to just get the tension in the wrong part of the belt which will then cause it to slip a tooth. Just tripple check everything, spin the motor over by hand a few times and check that everything still lines up to TDC.. I usually then run the engine for a minute or two and recheck everything's good before putting it back together.

**ajh** · 07-09-2006, 08:20 PM

I recently did the timing belt & water pump on my (sorry, my Wife's) camry (3S-FE). Done carefully, the belt can be replaced without disturbing cam & crank pulleys. As for the tensioner bolt, mine was as tight as...well, you know! A sharp tap on the bolt head with a hammer and pin punch broke the corrosion, then it loosened easily.

Just for peace of mind, I did hand turn the engine to TDC before removing the belt cover, then marked the cam pulley with liquid paper before removing the belt.

One other thing, I found unhooking the tensioner spring made it a damn sight easier to fit the new belt. Just be sure to hook the spring back on the lug once the new belt is on, then check the belt teeth are sitting correctly and nothing has been moved etc.

Good Luck.

**MarkIIRx12** · 09-09-2006, 03:50 AM

Thanks for all ur answers.

I have changed the belt now and the car runs real good, like its suposed to.

I got a new problem tho, after i changed the timing belt, all of the sudden the temp gauge doesnt work anymore. I assume i managed to touch the wire or something, the sensor seems fine (if its the correct one i found), and i cant really seem to find out whats wrong.

Anyone have any ideas on what might be the problem here?

Thanks again for ur answers

**Dale** · 09-09-2006, 08:06 PM

The temp sensor should have a single wire running to it, normally they're spade (flat type) connectors on toyotas. Don't confuse it with the thermofan switch wire which will likely have a round, larger plug on it

Chances are you've bumped it off while doing the timing belt (although I think it's at the opposite end of the engine? on 3sge at least), or there's grease or something around it stopping it from making a good connection.