First installation attempt on a VW Type 1

Luca Lagonigro · Post by **Luca Lagonigro** » Wed Apr 20, 2005 10:49 pm

Hi there,

I've finally did my trial installation on a VW flat4 aircooled engine, I just got two backfires: one from the carb and one from the exaust then the old battery died... it might be all wired correctly and the backfires the result of a very rough toothwheel positioning... but, just to be sure, how should I have to hook the spark plugs to the EDIS coils knowing that the VW firing order is 1-4-3-2?

What I shouls see in the real time monitor duning cranking? I had sparks and communication but RPM stayed 0 all the time, is it ok?

Next time I'll bring a Hall sensor with me to test in place of the (ABS) VR I'm using and an O'scope.

Ciao

Luca

Luca Lagonigro · Post by **Luca Lagonigro** » Wed Apr 20, 2005 10:56 pm

Here is a photo of the test engine: http://community.webshots.com/photo/692 ... 4407JVqbai

Luca Lagonigro · Post by **Luca Lagonigro** » Fri Apr 22, 2005 7:10 am

Ok I had the confermation 1-3 4-2 are the correct pair.

Luca Lagonigro · Post by **Luca Lagonigro** » Fri Apr 22, 2005 9:21 pm

Ouch... I've installed and positioned the pulley just by memory, now I've read the instructions again and I understood i've made a BIG mistake: The missig tooth is now 90Â° BTDC and the sensor is at TDC but I had to fit the sensor 90Â° BTDC with the missig tooth at TDC!

Now I understand the backfire.

Unfortunately I cannot try again until next week. Shame on me, I didn't RTFM.

Luca

Luca Lagonigro · Post by **Luca Lagonigro** » Sat Apr 30, 2005 7:59 pm

Sad news, second attempt failed. At this pont i don't know if it was because the engine was flodded or something else.

Still what I can get it's just backfires.

Todd Charles · Post by **Todd Charles** » Sat Apr 30, 2005 10:21 pm

What did you change so far? Did you swap the #3 and 4 wires? Did you reorient your pickup? I don't think you would actually have to move the pickup if you just move the plug wires. They wont match the numbers on the coil but 3 and 4 wouldn't anyway. I can't quite wrap my mind around the timing of the whole thing but I think if you move the wires on the coil "back" one spot in the firing order this should work.

Todd

Luca Lagonigro · Post by **Luca Lagonigro** » Mon May 02, 2005 8:31 am

Hi Todd,

I've tried almost everything:

>Did you swap the #3 and 4 wires?
I've checked that each sparkplug couple (1-3 2-4 ) is connected to one coil of the two.

> I don't think you would actually have to move the pickup
The pickup is still there, I've just turned the triggerwheel 180Â°. With engine at TDC (engine turns clockwise) the missing tooth is now 90Â° past the sensor.

One thing I'm not sure is the sensor itself, it comes from an ABS system. I never tested it it may not work or simply not be a VR.

I'll try to set up the system on the bench before doing anything else.

Luca Lagonigro · Post by **Luca Lagonigro** » Tue May 03, 2005 8:43 am

I've built a test bench and it seems that the problem is the sensor, I cant get a reliable spark below 1000 rpm.

Todd Charles · Post by **Todd Charles** » Wed May 04, 2005 4:21 am

Not sure if you saw one of my previous post but I tested my sensor (stock Escort) and had an out put of 1.0-1.1 Volts AC on a DMM. This was during cranking. As far as I know all ABS sensors are of the reluctor type and "should" work if the out put is high enough. Hope this helps.

Todd

Luca Lagonigro · Post by **Luca Lagonigro** » Thu May 05, 2005 10:29 am

Hi Todd,

yesterday's night i did some testing. I've scoped the ABS sensor's signal and i found it's only 400mV peak to peak.

The amlpitude increase a little bit with speed but no more than 100mv, I've tried also to place the sensor's tip as close as possible to the thooted wheel and change the sensor's orientation in respect to the theeths but the amplitude was always that low.

I bet the problem is the signal amplitude at cranking speed. As you said the sensor is VR type but the output isn't high enough.

Then I decided to try another EDIS module I have around for spare, now... with the second module the spark is stable also at low RPMs.

I don't think there is anithing wrong with the module I've used before, the latter probably has a little more sensitivity.

I'll try again on the engine soon, in the meantime I'll try to fabricate a sensor bracket to keep it firmly in place. While looking for a new sensor.

Anyone has one?

bsimon · Post by **bsimon** » Thu May 05, 2005 2:09 pm

Look here:

http://picasso.org/mjlj/?q=node/view/389

Most of these VR sensors are under 20 clams at the auto parts store. They're all Ford replacement items designed to work with EDIS.

Luca Lagonigro · Post by **Luca Lagonigro** » Thu May 05, 2005 4:01 pm

I saw it, that's an interesting post. I think someone should take the time to put all the EDIS information in one single page or website at least.

However I'm in Itlay, I've a FORD dealer next to me. Do you think this codes will work also with them?

I think I'll give it a try tomorrow morning, I'll carry a sensor picture with me, that should be a pretty common sparepart also for the last shop guy on the planet.

bsimon · Post by **bsimon** » Thu May 05, 2005 6:47 pm

Those are Standard Motor Products part numbers, not Ford. The European affiliate is www.intermotor.co.uk, although their website doesn't work properly. You may still want to go to an independant autoparts supplier and see if he can cross reference the SMP part numbers.

Luca Lagonigro · Post by **Luca Lagonigro** » Fri May 06, 2005 4:10 pm

I went this morning at the Ford dealer, I had to draw the sensor on a peice of paper... but then the guy said "ah! the flywheel sensor!".

So... this is what I came out with for the equivalent of 35$: http://community.webshots.com/photo/692 ... 9780KtWqnJ

I'll do some testing tonight, in the meantime I'l change my name on this forum in "overbudget".

bsimon · Post by **bsimon** » Fri May 06, 2005 4:49 pm

That one will work! Thats an Standard Motor Products PC18.

Autosport Labs

First installation attempt on a VW Type 1

First installation attempt on a VW Type 1

Here is a photo of the test e

Ok I had the confermation 1-3

Ouch... I've installed and po

Sad news, second attempt fail

What did you change so far? D

Hi Todd, I've tried almost

I've built a test bench and i

Not sure if you saw one of my

Hi Todd,yesterday's night

VR sensors

I saw it, that's an interesti

VR sensors

I went this morning at the Fo

VR sensor