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#1 (permalink) Old 12-20-2011, 12:35 AM
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99 Rav4 timing issue

Hi all,

I am stuck and am here to seek guidance from anyone. My vehicle is a 1999 Rav4 with a 3S-FE motor. Recently while driving, around 40mph, the engine had a jolt, the check engine light came on, and started losing power quickly. The check engine light was a P0340, Cam Position Sensor. While following the Factory Service Manual, I found out that the timing belt had some teeth sheared away, thus the reason for CEL for the Cam Position Sensor. The timing belt was still one continuous piece just with some missing teeth. I switched out the timing belt and the cam sensor again following the FSM.



After replacing the necessary parts, including the spark plugs, the car started, but idles and ran rough. I figured it was a timing issue. After re-doing the timing belt, it will not start. It cranks but does not turn over. See the video I have here for reference. Any help will be greatly appreciated.

Thank you!

" title="Rav4 - YouTube" target="_blank">Rav4 - YouTube
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#2 (permalink) Old 12-20-2011, 01:22 AM
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Forgot to mention a few more things.

The video I posted on my first post is my Rav4 that I am trying to start.
I had confirmed that there is spark and have fuel running through the system. I have half a tank of fuel still avaiable. All ground wires are connected/secured. All air related sensors and vacuum lines are connected.

I am basically out of ideas and do not know what is causing the problem for the motor not starting.

Thanks all!
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#3 (permalink) Old 12-20-2011, 07:31 AM
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Garage
Are you sure you replaced all needed parts of the timing belt, including tensioners, water pump and pulleys?
Did you position it correctly afterwards (in line with the marks)?

If you did that, please check the following (because i hear it crank but not get the engine going)

Check the voltage of your battery. See how much is still has to offer.

If it's below 12V, it's past life expectancy. You will need to replace it. It cannot be recharged anymore. The starter will however still crank, but cannot give enough power surge to really get the engine going anymore.
It should be reading 12.6V or higher if it's fully charged.
Greetz

Pim

Driving a BMW318i with LPG at the moment. Had a 2.0 RAV4.1 1997 3drs 4WD euro model w/ABS dual sunroof blue two tone previously.
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#4 (permalink) Old 12-20-2011, 08:34 AM
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Quote:
Originally Posted by Pim View Post
Are you sure you replaced all needed parts of the timing belt, including tensioners, water pump and pulleys?
Did you position it correctly afterwards (in line with the marks)?

If you did that, please check the following (because i hear it crank but not get the engine going)

Check the voltage of your battery. See how much is still has to offer.

If it's below 12V, it's past life expectancy. You will need to replace it. It cannot be recharged anymore. The starter will however still crank, but cannot give enough power surge to really get the engine going anymore.
It should be reading 12.6V or higher if it's fully charged.
Greetz

Pim
All necessary parts have been accounted for. Battery is only a month old, basically new.

I lined up the timing marks according to the Factory Service Manual. Unless there is something else that is needed to be done and the FSM does not mention it, I would love to know.

Thanks for the reply.
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#5 (permalink) Old 12-20-2011, 08:51 AM
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If there's some problem with the tensioner then the belt can skip a few teeth. Even though the alignment was initially correct it would be worth checking that it didn't change.

I don't know for the rav4, but many engines will damage valves if run with bad cam timing. Are you sure this didn't happen? (can check with a compression test)
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#6 (permalink) Old 12-20-2011, 09:10 AM
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Quote:
Originally Posted by donp View Post
If there's some problem with the tensioner then the belt can skip a few teeth. Even though the alignment was initially correct it would be worth checking that it didn't change.

I don't know for the rav4, but many engines will damage valves if run with bad cam timing. Are you sure this didn't happen? (can check with a compression test)
Will double Check the tensioner.

At the time when this first happened, I was two blocks from my brothers house so I slowly crept there. I am fully aware of the damaging of the valves once I found out it was a timing belt problem.

Haven't check for compression but will definitely do that. Also I have to mention again that the motor started and ran right after replacing the parts, but was rough so this is the point where I am at after re-doing the timing.

Thanks for the reply.
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#7 (permalink) Old 12-20-2011, 10:49 AM
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It sounds like it's cranking a little too easy. Do a compression test.
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#8 (permalink) Old 12-20-2011, 11:14 AM
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Sounds like the timing is off 180 degrees. Make sure you are on the compression stroke when lining upp your timing marks.
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#9 (permalink) Old 12-20-2011, 12:18 PM
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Thanks for the replies/help. Will definitely double check the job.
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#10 (permalink) Old 12-20-2011, 12:46 PM
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quick thing, your 3sfe engine is non interference so if the timing belt snaps it wont damage the valves
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