x5 4.6 is DIY timing job failure please help
 

Hi Everyone,
I decided to give it a try and do the timing overhaul on my failed timing guide rails.The plastic cracked after 154000 miles.So i replaced all 3 rails new chain gaskets and etc.I set the timing on cam shafts using the tool . and every time i was removing the blocking tool and spinning the crank shaft to test if everything was ok, one of the shafts (i think it was the intake) was slipping off ,and making click sound ,and timing was off again.I set the block again released and retorqued the bolts but it kept slipping off every time i was testing the timing . i was told it's the oil preasuure that will hold it back into place ,so i put back the engine .Tried to start, it was cranking but no starting, played with airmass sensor wires it started roughly and start making a rumbling/ clinging noise .And Of course codes came out Camshaft sensor position 1-4.5-8, air mass sensor ,throttle position sensors.
I put some videos on youtube if smb can take a look and put me in the right direction .
I Would Greatly appreciate the help, i know it's not an easy DIY but couple mechanics i talked to were complaining that it would take them 30 hours they are busy,i decided to give it a try myself.
Thanks
https://www.youtube.com/watch?v=0Kt-kD_4KuE
https://www.youtube.com/watch?v=A0frwFgba0k

I hope this doesn't sound to harsh, but don't run that motor anymore. There is something major wrong with it. You need to really review the timing procedure and start over. Was the motor making any noises before this? Other than the usual bad guide noise? I couldn't tell from your cryptic description of what was happening, but if it is like the 4.4 motor, the intake on bank 1 will snap over once you remove the timing blocks, but that doesn't matter since you are checking the timing disc with the blocks on. You may be over your head here. Maybe tow it to someone who knows how to time them and that won't take as long. But, still some labor involved. Keep us posted, but don't run it anymore

Just watched the first video, the cam is operating properly. I think your VANOS is messed up or your timing is just f'd. You need to go to Besian site, follow his directions explicitly and see how it goes.

It was not making any noises before,exept the noise of the bad guide rails,i could hear the chain running on the metal .
Could that be a Hydraulic valve lifter?That click sound on the 1st video when a turn the cam seems coming right underneath

Doesn't sound like a lifter (valve lash adjuster in BMW speak) to me.

Think you have to go over it all again.

No way is that a cam follower. That engine is not timed correctly - valve timing is off.

Gonna have to go back and re-time the engine at a minimum.

I did the timing all over again, and everything is solved now.
Thanks
Now I have another problem.
Turned on the engine and it went to engine fail safe mode,i checked it with my peak R5/FCX-3
scanner tools, the following faults came out
1.drive -by -wire throttle position monitoring
2.drive by wire throttle controller,lower adaptation
3. air mass sensor comes and goes.
I cleaned the air mass sensor and throttle Body.
Cleared the codes. But still the the the top two codes are still there and engine is still in fail safe programming mode.
Any suggestions

Are you sure everything is hooked up correctly and all ground wires are back in place? Start with the simple often overlooked items. Strange that its throwing the vehicle in failsafe mode while idling. Unhook the battery at the back of the vehicle both negative and positive. Then follow the link for resetting the ECU (3 post down on link)

.Trans failsafe program after jump start - Bimmerfest - BMW Forums


or this:

Here is BMW-approved procedure:
- disconnect the ground/earth/(-) cable from the battery
- disconnect the positive (+) cable from the battery
- short the battery cable together for at least 10 minutes
- reconnect the positive (+) cable to the battery
- reconnect the ground/earth/(-) cable to the battery
- reset the clock
Source: http://www.bimmerfest.com/forums/sho...d.php?t=784468

То точно или масса где-то или переломленные провода.
Они же там все как пластиковые от постоянного перегрева.

you need to reset the adaptions for the throttle body. with the engine off place the key into position 2 for 2 minutes. DO NOT START THE ENGINE. You will hear/see the throttle plate go to the full open and full close as it calibrates itself. then you can proceed as normal. if you have error codes already stored you will need to clear them before you can calibrate the throttle body properly.

Let us know,

Cheers,

If you had the throttle body out hopefully you didn't try flipping the throttle plate. Check to make sure there isn't anything obstructing the throttle plate. You can also try resyncing the throttle plate. With the engine off place the key into position run for 2 minutes. Do not start the engine.

As others have suggested, start checking with the simple stuff first. I would also suggest taking a break (with some nice cold ones if you imbibe) and have a good nights sleep. The following day tackle the job with a fresh outlook and spirits after you're well rested.....works wonders;) It will seem so obvious when you find the problem and wonder how you missed it!

Fixed yet?

Still enjoying that cool beer maybe?

Lol!

Couldn't fix it yet.I didn't take the throttle body out. I just cleaned it well.
Today I tried to take it for a test drive but unfortunately could not drive more then 25 miles an hour , the engine fail programming din't go away, and those 2 codes are still there.I tried the option that was given to me here with the disconnecting the battery and living the positive and negative cable tied together for a while, and the gas pedal option but it didn't help.My car set for 6 month or so before i finally accomplished the timing chain task and and my battery may gone bad, could that be a reason for fail safe programing? And also i when i was disconnecting the harness from the throttle body i looked inside that connection box and looks like one of the 6 needles (i don't know the technical name) was broken .I don't know if that may be cause of those 2 throttle body error codes .if that's the case ,the throttle body is 462$ .So i am kinda stuck again,but don't want to give up,i came all the way :)
MY story "had to do it 3 times ,1 st one failed,as you saw it on my video.My uncle's fault (long story))he didn't set the flyingwheel for OT mark to set the correct timing(not mad at him he was trying to help when i was at work ,he is a cool dude)) , then i set it the 2nd time with OT setting mark ,following the step by step timing procedure .And when i was almost done putting the ignition coils , i saw my IMPULSE SENDING WHEELs on the table oh man i almost lost it!!!no choice had to do it all over again the 3rd time))

The "Needles" are called "Pins" in the industry. Yep a broken pins means no signal or electrical connection. There's another poster who was having problem with his transmission. It was a broken pin at the transmission EGS computer that cause his transfailed message. He replaced the old transmission computer, coded the replacement computer and his error message went away.

Check the harness to determine if the missing pin is in the harness. Putting a new throttle body in with the broken pin still in the harness will just bend the pin on the new throttle body.

Here's a use one on eBay for 52.00 or best offer. I'm sure he'll take 50 for it. Shipping is free. I would ask that he take a picture of the electrical connection to verify that none of the pins are missing.

2002 2003 BMW E53 x5 4 6IS M62 Engine Throttle Body Assembly | eBay

Thank You my friend, you saved me 400$ bucks))i just got it for 50$ as you said.Do you know if that throttle body needs to be reprogramed once i install it or?

You will need to adapt the new throttle body to the potentiometers on the gas pedal. That adaptation procedure has already been posted. I don't think you will need to have it coded.

Hello everybody.Got my throttle body delivered Monday,installed it yesterday and it worked like a charm.Engine works like a clock.
Thanks to everyone to guide me through the whole process .
Now I have a exhaust leaking problem,looks like from the driver's side.If anyone has a link,please send

Thanks for coming back and posting an update. Glad that you got the X fixed and running again.

special thanks to you, for that eBay part :D

Update on exhaust leak. Took it to mechanic, he kept it for couple days and couldn't make up his mind on fixing it , saying that he needs to lift the engine and if he had to take the manifold out and break the studs than repair will be a night mare and expensive and advised me to get rid of it and buy a newer car. So I took out the car , sat till 2 am in the morning and bumped in to a video on you tube where the guy was having the same exhaust noise as mine and explains on the comments that all he did is change the o rings on secondary air line and tightened loose bolt. That's what I did too an hour ago. Voiala , no noise , engine works like new)))this video saved me couple thousand and the frustration . Just wanted to share if smbd has the same problem after the timing or vanos Check your secondary air line and replace those 2 O rings just in case ))))

Very rarely do these x5s have exhaust leaks sat the manifold . some other gasket is the problem. glad you found the simpler solution

:thumbup::thumbup:

Great solution to a "tech that knows little but tells you everything is bad". Better known as "in over my head but will not admit it" syndrome.

Good job on pushing further to discover the problem/solution repair.

Can you post a link to the video?

Great that you didn't just accept what the mechanic said and persisted in finding a solution.....well done! That mechanic would probably have offered to buy your X5. There's a valve stem seals thread on here where someone who was given such an advice and the mechanic bought the X5 from him on the cheap- probably the car just needed new csv or vacuum leaks fixed to stop the smoke after idle issue. Whenever a mechanic gives you an horror tale about your car, think twice!