Crankshaft Sensor Error - After New Clutch - Page 3

FRSpilot · 30th June 2012, 00:16

Sorry for my error, when I said dowels, I meant to say they ordered the set that includes some of the other dowels.

How do you know which dowel sleeve is in the right hole?

hairball · 30th June 2012, 00:46

Quote:

Originally Posted by FRSpilot

Sorry for my error, when I said dowels, I meant to say they ordered the set that includes some of the other dowels.

How do you know which dowel sleeve is in the right hole?

No biggie. I just didn’t want you paying for things that aren’t necessary (even though those dowels are pretty cheap). I replaced mine when I did my clutch job a few weeks back. It's pretty easy to bang those things up with taking off and putting back on the flywheel multiple times, Anyway, just ask your guys to verify TDC (Top Dead Center) of the engine. It's been a long time since I've done this, but there should be a mark on the harmonic balancer on the front of the engine to determine this. I would assume (and others on this board can verify) that the mark on the front of the engine should correspond with the dowel position on the crank? If it was just a few weeks ago, I could have sent you some pictures on this, but my car is all buttoned up.

John

FRSpilot · 30th June 2012, 00:55

I called them to see what they found out. He said the new dowel came, and that it only fits in one hole... He was going to measure to make sure. Is that right??

hairball · 30th June 2012, 01:11

Quote:

Originally Posted by FRSpilot

I called them to see what they found out. He said the new dowel came, and that it only fits in one hole... He was going to measure to make sure. Is that right??

I'm not sure about that? Makes sense though. I didn't really look at the size of the holes on the crank to see if one was larger than the others. Would seem logical and better off for you though. One less thing to worry about if they are right.

vantaam5 · 30th June 2012, 22:47

OK,these are the possibilities:

-the cut out for the 2 missing teeth is in the wrong position compared to the dowel pin
-if you have bent teeth,it is easy to set up a dial gauge on the block to measure the flywheel while rotating the crank.

If this turns out to be fine:
-measure the crank signal with an oscilloscope on the sensor and on the pins on the ECU

Report back then we trouble shoot further.

jfoj · 30th June 2012, 23:10

Hopefully your problem is something simple where the dowel was tapered by it being put in the incorrect position and someone thought the flywheel was lined up??

Might suggest that before they put the flywheel back in, they put both on then bench side by side for a very close visual inspection.

Like Vantaam5 said, line them up so they are in the same position, with the crank sensor cutout in the same location, say 6 o'clock. Then try to locate the correct dowel hole on the old flywheel, use the dowel to verify fitment, then check the new flywheel to make sure it is in the same location relative to the crank sensor cut out.

I would then suggest marking the correct dowel hole with blue tape or a permanent marker.

Then make sure you find the correct position in the crank where the dowel fits and note the clock position.

Then assemble things knowing exactly where the proper reference is supposed to aligned.

Not sure if you can cheat and use a Voltmeter on the crank signal just to make sure there is a signal in case you do not have a oscilloscope or scopemeter handy.

Good luck.

jfoj · 30th June 2012, 23:15

Another flywheel install problem link that might be useful??

Won't start after clutch install- ideas please

hairball · 1st July 2012, 00:06

Quote:

Originally Posted by jfoj

Another flywheel install problem link that might be useful??

Won't start after clutch install- ideas please

I just updated the Vantaam5 clutch / rear main thread DIY with some pictures of the Luk flywheel and dowel markings. Maybe it will help others?

Clutch change DIY with pics

FRSpilot · 4th July 2012, 00:45

They did the dial gauge as you suggested and one of the teeth is off on the flywheel by more than a few MM. Is that enough for the car to not start and give a CKPS error?

The flywheel is part of the CNS package I bought awhile back. They seem pretty easy to deal with but I can't speak to them until after the holiday.

vantaam5 · 4th July 2012, 08:37

Quote:

Originally Posted by FRSpilot

They did the dial gauge as you suggested and one of the teeth is off on the flywheel by more than a few MM. Is that enough for the car to not start and give a CKPS error?

The flywheel is part of the CNS package I bought awhile back. They seem pretty easy to deal with but I can't speak to them until after the holiday.

Very possible that is the issue.

If the tooth is bent a few mm,it has a big impact on the signal,basically like there is a tooth missing.