He probably did the balance shaft belt wrong. I've never had it happen, but the balance shafts can rotate with the belt off and be out of phase. I can't remember if the rear or the front likes to rotate with a belt off, but that is likely it.

I'm no longer using the balance shafts, so it's way easier to only line up the timing belt marks.

Awesome! Thanks man.

I will print off this for the shop so they can fix the issue.

This is how everybody heads blew up back in the mid 90s after their first timing belt jobs, not reading the manual, no one adjusted the timing tension pulley. I just wonder what yours is set at right now.

Shop made the necessary adjustments and vibration is now gone.

Only issue now is the car idle low at times after engine is warm...

CAS probably??

Quoting E39Alfa:

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Shop made the necessary adjustments and vibration is now gone.

Only issue now is the car idle low at times after engine is warm...

CAS probably??

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Low idle at times? or all the time?
Cam timing be off can cause low idle.
Did it have low idle before the timing belt job?

MY MOTOR JUST WENT!!!

NO COMPRESSION in 3 of the cylinders!!!

Here is the series of events that uncovered this mess...

Took the car to another shop (not the shop that did the TB service, of course) to convert my AC to 134A. Serviced and worked fine until AC went out 3 weeks later.

Returned to car to the same shop to find out why my AC stop working after just recently converting to 134A. Shop tested for leaks and what not and found out that the compression clutch was not engaging. FML!!! Just sent $700+ to convert... NOW THIS??

OK fine, I guess no AC for me for the rest of the summer, I can live with that, right??

About a week after that I started to hear a squeaking noise coming from the engine bay... after further investigation found out the belt from the AC compression was loose and part was wedged in the corner of the engine block where the TB cover is.

WTF / HTF was my initial reaction.

Looking down further on the crank pulley, there was only one belt on there. The AC belt seemed to came off the crank pulley and was wedged in a corner. And with the engine running, that was to source if all the squeaking noise with a very slow rotation of the AC belt.

At this point I’m thinking WTF did this shop do when they did my AC service??? So I decided to drive the car back to there shop Sunday evening so they can look at it first think Monday morning.

Well on the 5 mile trip to the shop with my wife tailing me, the car just suddenly died on me at a stop light with no warning sign such as loss of power or engine hesitation/vibration. It just died not even a football field away from the shop.

So after a few F bombs, I gathered myself and popped the hood and saw that now the AC belt was no longer visible in the engine bay. Must have fell to the bottom of engine tray or something. Whatever. So we hook the car with some ratchet straps and pulled it to shop

Shop did their investigation and called me with news that I have bigger problems than the AC compressor and belt...

They did a compression test on the car and received NO COMPRESSION in the first 3 cylinders and didn’t even bother to do the 4th. And that this issue had nothing to do with the AC service that they did because they didn’t touch the AC belt or tension while they did their service. They said that this way an internal issue with the engine at this point. They also took the top portion of the TB cover off and noticed that the belt was starting to shred a bit.

So thinking back to the shop that did my TB service and all the issues they had with it... could it be that my timing was not set correctly amongst other things???


Man I'm lost at this point. Where to start with all this mess???

GVR4 Community, Your Opinion and Expertise is Needed!!!

I'm guessing it's one of three things:

1) The first shop who messed up your timing belt job did something that damaged the belt - wrong bolts in the wrong place, belt tension too loose etc

2) Your crank pulley split (this happens due to age and is a common problem) and the excessive vibration with the crank not being dampened caused further damage after prolonged driving with it in this state

3) a combination of both, or none at all and I'm just talking BS.

Nail on the head with opinion # 2 with the crank pulley. It failed!

Definitely right that I shouldn’t have drove the car knowing that it wasn’t at 100%... lesson learned

Crank pulley, harmonic balancer failure, usually just leaves you stranded, I thought. Unless it failed in away that it cut into the lower timing belt cover.

Double check the front balance shaft belt.

See link for pictures...

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