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Forum: aftermarket engine management Today, 07:50 AM
Replies: 2
Views: 94
Posted By bobxyz
Hi Diego, Wow, you've done a lot of work! Very...

Hi Diego, Wow, you've done a lot of work! Very nice.

A couple years ago, I started to work on a similar project to monitor LH2.4+EZK using a simple Arduino board. I wanted
- a dashboard...
Forum: performance & modifications 04-19-2021, 11:10 PM
Replies: 26
Views: 3,490
Posted By bobxyz
I didn't have time to take any additional...

I didn't have time to take any additional measurements, but I did figure out how to easily fool the EZK Knock detection so that it doesn't cause a CEL. CEL is short for Check Engine Light, the...
Forum: performance & modifications 04-19-2021, 08:55 AM
Replies: 26
Views: 3,490
Posted By bobxyz
apollokid - I agree that real measurements from a...

apollokid - I agree that real measurements from a running engine are much better. My benchtop setup is limited. 3 temperature resistors (normal, hot, cold), no O2 control (sensor usually...
Forum: performance & modifications 04-17-2021, 05:13 PM
Replies: 26
Views: 3,490
Posted By bobxyz
Hi Diego, I got my benchtop Arduino LH2.4 test...

Hi Diego, I got my benchtop Arduino LH2.4 test setup working again - it's been gathering dust for at least a year. (click pictures for full size)
...
Forum: maintenance & nonperformance 04-17-2021, 04:32 PM
Replies: 9
Views: 344
Posted By bobxyz
Maybe the 3 wires to the IAC are swapped somehow?...

Maybe the 3 wires to the IAC are swapped somehow? Or maybe there's no power to the CIS box?
Forum: performance & modifications 04-17-2021, 10:01 AM
Replies: 26
Views: 3,490
Posted By bobxyz
Thanks for the pictures! I really like the...

Thanks for the pictures! I really like the breakout box.

It's cold and snowy here today, so not a good day for the garage. But I have a ECU and EZK wired up indoors on my desktop, so I can play...
Forum: maintenance & nonperformance 04-16-2021, 09:17 PM
Replies: 42
Views: 2,665
Posted By bobxyz
Wow, that's an awful lot of fussy, contorted and...

Wow, that's an awful lot of fussy, contorted and uncomfortable work. Sure hope it works well and that you have a big grin every time you flip that switch :)
Forum: performance & modifications 04-16-2021, 09:09 PM
Replies: 26
Views: 3,490
Posted By bobxyz
Sounds like a great project, please post a link...

Sounds like a great project, please post a link to some videos!

Here is some info you may find useful.

The EZK-to-ECU RPM signal pulses twice per rev. The falling edge is nicely aligned with...
Forum: maintenance & nonperformance 04-16-2021, 07:35 PM
Replies: 18
Views: 586
Posted By bobxyz
Please post the pictures when you get them,...

Please post the pictures when you get them, especially the mounting bolt(s?) going into the engine bellhousing(?). Do you know if the connector is 2-pin or 3-pin?

As you've said, the sensor will...
Forum: maintenance & nonperformance 04-14-2021, 09:48 PM
Replies: 15
Views: 649
Posted By bobxyz
If you go to the horn link you posted, click on...

If you go to the horn link you posted, click on the word "Attachments" (light gray), and look at the bottom 2014-09-12_FIAMM_tourhorn_instructions.pdf file, it has brief instructions.

The...
Forum: maintenance & nonperformance 04-13-2021, 02:05 PM
Replies: 8
Views: 373
Posted By bobxyz
Yes, the CPS sensor and bracket is the same for...

Yes, the CPS sensor and bracket is the same for auto and manual. You will need the LH2.4 flywheel, with the 60-2 hole pattern around the edge. See below link for what I needed to do to convert a...
Forum: maintenance & nonperformance 04-12-2021, 09:03 AM
Replies: 16
Views: 10,648
Posted By bobxyz
It's a 10ohm (BRN-BLK-BLK) resistor. In the...

It's a 10ohm (BRN-BLK-BLK) resistor. In the circuit, it's in series between the center ground pin of the regulator and ground. I haven't seen this circuit configuration before -- maybe it's trying...
Forum: maintenance & nonperformance 04-12-2021, 08:59 AM
Replies: 8
Views: 540
Posted By bobxyz
I don't know what that wire loop is, but I'd...

I don't know what that wire loop is, but I'd guess that when you moded the cluster for larger bulbs, that you damaged or cracked a trace on the inside of the circuit board. You'll need to remove the...
Forum: aftermarket engine management 04-11-2021, 12:07 PM
Replies: 5
Views: 490
Posted By bobxyz
Here's an old thread and great posts from Mueller...

Here's an old thread and great posts from Mueller about using a Honeywell 1GT101DC sensor, with drawings for a custom adapter bracket:
https://forums.turbobricks.com/showthread.php?t=265962

I...
Forum: performance & modifications 04-09-2021, 04:38 PM
Replies: 9
Views: 843
Posted By bobxyz
A MicroSquirt with the Volvo 60-2 tooth...

A MicroSquirt with the Volvo 60-2 tooth flywheel/flexplate (from LH2.4 cars) can run 4x LS coils in wasted spark mode. With this setup, the distributor can be removed....
Forum: maintenance & nonperformance 04-08-2021, 01:16 PM
Replies: 11
Views: 1,008
Posted By bobxyz
Before modifying anything, try unplugging the...

Before modifying anything, try unplugging the keyless box and see if the weird gauge behavior goes away. If so, it's the box; if not, suspect something with the cluster mods, or the connectors to...
Forum: maintenance & nonperformance 04-07-2021, 02:54 PM
Replies: 11
Views: 1,008
Posted By bobxyz
I looked at some other diagrams, and Art's notes,...

I looked at some other diagrams, and Art's notes, and yes, you want to wire yours as Feature C. While it may work when wired as Feature D, I think that there's a risk of shorting +12v through the...
Forum: maintenance & nonperformance 04-06-2021, 09:51 PM
Replies: 11
Views: 1,008
Posted By bobxyz
Those wiring diagrams are awful. I think you...

Those wiring diagrams are awful. I think you want Feature C, that pulses to ground to lock/unlock. Can you try it with yellow and yellow black tied to ground instead? Is it working now?
Forum: maintenance & nonperformance 04-06-2021, 07:46 PM
Replies: 14
Views: 746
Posted By bobxyz
Here's my suggestions: 1) setup a photo account...

Here's my suggestions:
1) setup a photo account and learn how to post pictures here. I use imgbb.com but flickr is probably better and should be around for a long time.
2) start a project thread,...
Forum: maintenance & nonperformance 04-05-2021, 10:17 PM
Replies: 13
Views: 812
Posted By bobxyz
Sorry, I misread the diagram. I thought that...

Sorry, I misread the diagram. I thought that there was a short black ground wire. Instead, clamping the stalk to the column must ground it.

Your picture of grounding the brown wire is fine but...
Forum: maintenance & nonperformance 04-05-2021, 09:27 PM
Replies: 13
Views: 812
Posted By bobxyz
The last stuff to check is that grounding the...

The last stuff to check is that grounding the brown turn stalk wire switches the lights, and that stalk black wire connects to column ground.
Forum: maintenance & nonperformance 04-05-2021, 09:03 PM
Replies: 13
Views: 812
Posted By bobxyz
Check the other end of that ground wire - it goes...

Check the other end of that ground wire - it goes to the tunnel, to the left of the shifter.
https://image.ibb.co/g1S1hn/horny_wiper_ground.jpg (https://ibb.co/iT3JTS)

It's also the wire that...
Forum: performance & modifications 04-05-2021, 02:15 PM
Replies: 18
Views: 1,186
Posted By bobxyz
FYI - if you don't like the look or robustness of...

FYI - if you don't like the look or robustness of black split loom harness wrap, you can buy high-temperature non-shrink harness tubing by the meter from digikey - search for: Raychem NETM1000. It's...
Forum: performance & modifications 04-04-2021, 10:36 PM
Replies: 18
Views: 1,186
Posted By bobxyz
The 8 foot MicroSquirt harness from DIY has nice...

The 8 foot MicroSquirt harness from DIY has nice labels on every wire. This makes building the harness easier.

While the Ford plug&play harness might work, I'd expect that there will be excess...
Forum: performance & modifications 04-04-2021, 10:25 PM
Replies: 4
Views: 739
Posted By bobxyz
MicroSquirt is easy - connect the Opto +/- wires...

MicroSquirt is easy - connect the Opto +/- wires to the 2 tabs on the coil -/+ (they cross Opto+ to - tab).

CDI is the same thing as an add-on MSD red high-voltage multi-spark ignition box, not...
Forum: performance & modifications 04-03-2021, 01:52 PM
Replies: 4
Views: 739
Posted By bobxyz
Normally, for fuel-only, you tap off the coil...

Normally, for fuel-only, you tap off the coil negative "-" tab. You need to build the MS2 Coil Negative circuits.

I don't know how Bosch Breakerless connects the 2 VR signals from the...
Forum: aftermarket engine management 04-03-2021, 01:33 PM
Replies: 2,334
Views: 1,763,192
Posted By bobxyz
^^^ seems OK now:...

^^^ seems OK now: https://ipdown.net/jetronic.info/tiki-list_file_gallery.php?galleryId=13&offset=0
Forum: maintenance & nonperformance 04-02-2021, 08:11 PM
Replies: 12
Views: 756
Posted By bobxyz
Unplug the 3 pin connector and measure the...

Unplug the 3 pin connector and measure the voltages across each pair. Black wire should be ground, and the other 2 are the lock / unlock relay coils. They should be +12v. If good, try jumpering...
Forum: maintenance & nonperformance 04-02-2021, 07:15 PM
Replies: 12
Views: 756
Posted By bobxyz
The orientation of the black collar and tabs...

The orientation of the black collar and tabs looks fine. Does it work if you pull up and push down on the unlock knob?
Forum: maintenance & nonperformance 03-30-2021, 09:59 PM
Replies: 20
Views: 1,036
Posted By bobxyz
You can still find a copy of the '87 wiring...

You can still find a copy of the '87 wiring greenbook (TP31054-1) here (https://web.archive.org/web/20150930174949/http://www.volvowiringdiagrams.com/?dir=volvo/240%20Wiring%20Diagrams)

I'd get...
Forum: maintenance & nonperformance 03-28-2021, 07:30 PM
Replies: 12
Views: 1,351
Posted By bobxyz
I think you need to change to the 86+ (or so)...

I think you need to change to the 86+ (or so) accessories bracket to use the newer pumps - either the one with the external reservoir or the later one with the built in reservoir. The mounting and...
Forum: maintenance & nonperformance 03-26-2021, 07:29 PM
Replies: 13
Views: 1,350
Posted By bobxyz
There should be a little unconnected single pink...

There should be a little unconnected single pink wire test socket in the engine compartment up against the bulkhead, roughly in the center. If you jumper this to battery +12v, it will crank the...
Forum: maintenance & nonperformance 03-26-2021, 07:18 PM
Replies: 4
Views: 968
Posted By bobxyz
Missing tooth nomenclature isn't fully...

Missing tooth nomenclature isn't fully standardized.

Per TP 31397-1 page 26, for Volvo, a NN/m toothed wheel means a spacing of NN teeth per revolution before any teeth are removed, with m regions...
Forum: aftermarket engine management 03-25-2021, 12:15 AM
Replies: 19
Views: 2,613
Posted By bobxyz
Hope you're doing well now, with no lingering...

Hope you're doing well now, with no lingering issues.

I had my MS setup on the bench while looking at something else and tried your .msq file to see what would happen.

You've run across an...
Forum: maintenance & nonperformance 03-22-2021, 05:18 PM
Replies: 6
Views: 1,054
Posted By bobxyz
For the VW bugs, there were overlay repair grids...

For the VW bugs, there were overlay repair grids available, but IIRC they didn't have a good reputation. I'm not sure if more modern repair grids are available and work well. For my '69 bug, I had...
Forum: maintenance & nonperformance 03-22-2021, 05:00 PM
Replies: 6
Views: 1,054
Posted By bobxyz
This used to be a very common failure with the...

This used to be a very common failure with the early VW Beetles. They had the same direct switch setup with no disconnect timer. The defrost grid would be left on for days at a time and would...
Forum: maintenance & nonperformance 03-21-2021, 04:00 PM
Replies: 6
Views: 1,215
Posted By bobxyz
There are 3 adjustments: 1) the length of the...

There are 3 adjustments:
1) the length of the linkage rod from the cable spool to the pivot arm
2) the throttle plate stop screw position (look carefully at the arm near where the shaft goes into...
Forum: performance & modifications 03-19-2021, 06:55 PM
Replies: 8
Views: 1,272
Posted By bobxyz
You want a LH2.2 distributor. It has a 3-pin...

You want a LH2.2 distributor. It has a 3-pin connector coming out the side (power, ground, and hall sensor). The B21FT distributor has a 2-pin VR sensor, but more importantly, it has both vacuum...
Forum: performance & modifications 03-19-2021, 06:47 PM
Replies: 2
Views: 969
Posted By bobxyz
No ballast resistor needed. See the MSD wiring...

No ballast resistor needed. See the MSD wiring diagrams - the MSD box is spliced into the middle of the wire going to the coil "-" post. See also:...
Forum: maintenance & nonperformance 03-18-2021, 02:45 PM
Replies: 3
Views: 835
Posted By bobxyz
I removed the Lambda Service Counter box from...

I removed the Lambda Service Counter box from mine so that I could use the Lamba cluster light for a LH2.4 CEL. To do this, you should clip out the diode on the lamba light so that the light is...
Forum: aftermarket engine management 03-14-2021, 05:45 PM
Replies: 19
Views: 2,613
Posted By bobxyz
Set the MS to toothed wheel mode, no cam, and try...

Set the MS to toothed wheel mode, no cam, and try the ignition output test mode, or set it to basic trigger mode and try the rpm pot.
Forum: aftermarket engine management 03-14-2021, 04:06 PM
Replies: 19
Views: 2,613
Posted By bobxyz
I just saw your .msq on the ms-extra forums. ...

I just saw your .msq on the ms-extra forums. You're set to "fuel only" mode, i.e. no spark. You need to go back to "toothed wheel" mode, or whatever you're trying to run, and turn off the cam input...
Forum: maintenance & nonperformance 03-14-2021, 03:15 PM
Replies: 2
Views: 866
Posted By bobxyz
You need to change the ECU, EZK, and injectors as...

You need to change the ECU, EZK, and injectors as a set. Running higher flow turbo injectors with a NA ECU+EZK will cause excess fueling. Running lower flow NA injectors with Turbo ECU+EZK will...
Forum: maintenance & nonperformance 03-14-2021, 03:08 PM
Replies: 10
Views: 1,569
Posted By bobxyz
Great, it's so nice when you find the source of a...

Great, it's so nice when you find the source of a problem and the symptoms all match up. Is your idle timing still 25deg, or is that fixed too?

For the torque limiter relay, I'd bypass it and...
Forum: aftermarket engine management 03-14-2021, 02:57 PM
Replies: 19
Views: 2,613
Posted By bobxyz
As a simple test, you could check that the JS10...

As a simple test, you could check that the JS10 daughterboard pin is connected to IGN out -- measure the resistance from daughterboard pin #17 to the IGN pin on the DB-37 connector, pin #36. There's...
Forum: projects & restorations 03-14-2021, 02:41 PM
Replies: 138
Views: 53,586
Posted By bobxyz
Nice progress! Check the wiring diagram, but...

Nice progress! Check the wiring diagram, but some (or maybe all) years of K-Jet have a wire from the coil "-" tab to the fuel pump relay (and to tach, if any). The fuel pump relay only turns on...
Forum: maintenance & nonperformance 03-12-2021, 11:21 PM
Replies: 33
Views: 3,622
Posted By bobxyz
What's reasonable guidance for a machine shop...

What's reasonable guidance for a machine shop "tipping the valves" versus changing shims? Is up to ~8 thou (2 shim sizes) OK?
Forum: projects & restorations 03-12-2021, 06:41 PM
Replies: 138
Views: 53,586
Posted By bobxyz
Check your plug wire ordering. From the front of...

Check your plug wire ordering. From the front of the car, the disti tower on the front left is #1. It's then 1-3-4-2 going clockwise looking down on the disti towers. The rotor should point to the...
Forum: aftermarket engine management 03-11-2021, 07:44 PM
Replies: 19
Views: 2,613
Posted By bobxyz
Yeah, that seems like the ECU isn't working...

Yeah, that seems like the ECU isn't working correctly. From your picture, you're using JS10, which is wired directly from the CPU chip on the daughter board. If the ign wire was going to an...
Forum: aftermarket engine management 03-11-2021, 01:11 AM
Replies: 19
Views: 2,613
Posted By bobxyz
1) In Tunerstudio, with the stim, try the...

1) In Tunerstudio, with the stim, try the Testmodes - Inj/Spk - Coil Test, and see if the LED pulses correctly. If this is OK, check that you don't have any Ignition - Noise Filtering enabled.

2)...
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