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Search: Posts Made By: bobxyz
Forum: maintenance & nonperformance 05-07-2021, 09:23 PM
Replies: 11
Views: 222
Posted By bobxyz
OK, do you have anything else non-factory that's...

OK, do you have anything else non-factory that's been connected to the "ign" wire during the MS install?

Most likely, something gets powered on by MS, which then back-powers the "ign" wire, and...
Forum: maintenance & nonperformance 05-07-2021, 08:08 PM
Replies: 11
Views: 222
Posted By bobxyz
If you connect the dashboard lamp to the wrong...

If you connect the dashboard lamp to the wrong spade on the alternator, it can provide an alternate path for +12v when the key is off.
Forum: maintenance & nonperformance 05-07-2021, 07:54 PM
Replies: 11
Views: 222
Posted By bobxyz
Let me guess, you've connected the power to the...

Let me guess, you've connected the power to the main MegaSquirt relay to something other than _direct_ from the ignition switch?

If so, can you sketch out how your MS main/fuel relays are wired...
Forum: aftermarket engine management 05-04-2021, 11:12 PM
Replies: 27
Views: 2,351
Posted By bobxyz
I'm making progress on the design, but am not...

I'm making progress on the design, but am not quite there yet. Here's what the schematics look like currently (click for bigger):
https://i.ibb.co/j66KQr9/Schematic-in-progress-2021-05-04.png...
Forum: maintenance & nonperformance 05-01-2021, 02:28 PM
Replies: 7
Views: 578
Posted By bobxyz
I think it's the 91 ABS system that has an extra...

I think it's the 91 ABS system that has an extra converter box between the differential sensor and the speedometer. I've never seen one, but try looking behind the glovebox. What's the Kxxxx number...
Forum: maintenance & nonperformance 05-01-2021, 11:11 AM
Replies: 7
Views: 578
Posted By bobxyz
Sounds like the speed sensor in the differential,...

Sounds like the speed sensor in the differential, what Volvo calls the Speedometer Impulse Sender, is too far away from the slotted wheel inside the differential. For the pre ABS cars, this can be...
Forum: maintenance & nonperformance 05-01-2021, 11:04 AM
Replies: 7
Views: 852
Posted By bobxyz
It's completely normal on any car of that era for...

It's completely normal on any car of that era for lots of the dashboard lights to turn on when the alternator isn't working. This is used as a bulb check before starting the car. If the alternator...
Forum: projects & restorations 04-29-2021, 01:12 PM
Replies: 6
Views: 1,332
Posted By bobxyz
Why LH2.2 and not LH2.4? LH2.4/EZ116K has...

Why LH2.2 and not LH2.4?

LH2.4/EZ116K has much better tuning and chipping support, which will help with your non-factory setup. [The 123 distributors do give you ignition tuning capability, but...
Forum: aftermarket engine management 04-26-2021, 11:54 PM
Replies: 27
Views: 2,351
Posted By bobxyz
Sorry, I haven't had as much time as expected to...

Sorry, I haven't had as much time as expected to work on this project in the last few days, and haven't had time to fully follow all the recent discussions.

I'm still planning on using simple RC...
Forum: aftermarket engine management 04-23-2021, 08:51 AM
Replies: 27
Views: 2,351
Posted By bobxyz
I don't know how bad the electrical noise will...

I don't know how bad the electrical noise will be. I'm planning to start with simple passive filters (Rs and Cs), and just resistor dividers to get to 3.3v logic levels. For sampling the inductive...
Forum: aftermarket engine management 04-22-2021, 02:40 PM
Replies: 27
Views: 2,351
Posted By bobxyz
If you're talking about a 240 with an electronic...

If you're talking about a 240 with an electronic speedometer, then yes, a pre-processed and filtered VSS signal is easily available. The filtering circuits are on the speedometer PCB. The signal...
Forum: aftermarket engine management 04-22-2021, 08:06 AM
Replies: 27
Views: 2,351
Posted By bobxyz
Glad to hear that you can use jlcpcb.com. That...

Glad to hear that you can use jlcpcb.com. That makes it easier for anyone to order boards directly, instead of my needing to figure out customs and international shipping.

I was going to use...
Forum: performance & modifications 04-22-2021, 12:15 AM
Replies: 28
Views: 5,407
Posted By bobxyz
Thanks, just call us "geeks at play" ;) If...

Thanks, just call us "geeks at play" ;)

If you're interested, here's the high level view. The LH Jetronic system splits the engine control between the EZK box (ignition) and the ECU box...
Forum: performance & modifications 04-21-2021, 06:54 PM
Replies: 3
Views: 884
Posted By bobxyz
Be nice to this guy and offer to split the...

Be nice to this guy and offer to split the profits on any parts that you sell instead of using yourself.

The Turbo Fan Shrouds are increasingly rare and, if there's two, the extra will pay for...
Forum: aftermarket engine management 04-21-2021, 07:50 AM
Replies: 27
Views: 2,351
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: 28
Views: 5,407
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: 28
Views: 5,407
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: 28
Views: 5,407
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: 1,144
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: 28
Views: 5,407
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: 4,527
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: 28
Views: 5,407
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: 1,611
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: 1,490
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: 10
Views: 1,354
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: 11,399
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: 1,204
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: 1,176
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: 1,865
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: 1,681
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: 1,681
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: 1,681
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: 1,313
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: 1,417
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: 1,417
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: 1,417
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: 2,262
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: 2,262
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: 1,390
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: 1,390
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: 1,799,844
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: 1,284
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: 1,284
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: 1,719
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: 2,016
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: 1,710
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: 1,211
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: 3,527
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: 1,272
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: 1,272
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...
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