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Forum: maintenance & nonperformance 09-23-2022, 11:24 PM
Replies: 26
Views: 8,481
Posted By bobxyz
I looked at pin 1 of the LH2.4 composite and...

I looked at pin 1 of the LH2.4 composite and think that ipdown is correct, but with a typo:

I measure 4.06v on pin 1 (non-calibrated meter), and it certainly seems like a precision voltage...
Forum: aftermarket engine management 09-22-2022, 07:20 PM
Replies: 5
Views: 183
Posted By bobxyz
I found some possibly compatible connectors ~5...

I found some possibly compatible connectors ~5 years ago but, afaik, no one ever tried them:
http://forums.turbobricks.com/showthread.php?t=338300

This may also be useful, but I never finished...
Forum: maintenance & nonperformance 09-21-2022, 08:32 PM
Replies: 6
Views: 306
Posted By bobxyz
That's a code for the maf hot-wire burnoff...

That's a code for the maf hot-wire burnoff function not working. It has a dedicated ECU-to-MAF white wire (ECU pin 8 to MAF pin 4). I'd start by checking the white wire at the MAF connector as Dave...
Forum: projects & restorations 09-21-2022, 08:18 PM
Replies: 107
Views: 110,067
Posted By bobxyz
I'd forgotten about this, but there was a...

I'd forgotten about this, but there was a relevant thread a few years ago:
https://www.turbobricks.com/forums/showthread.php?t=345641
(I never saw a followup from ipdown, and I haven't seem here on...
Forum: maintenance & nonperformance 09-21-2022, 12:23 AM
Replies: 104
Views: 3,144
Posted By bobxyz
Take a look at your remote cooler setup - there...

Take a look at your remote cooler setup - there may be a plug in it which could be removed to add a pressure gauge or switch on the return side. You'll need to check the thread size.
Forum: maintenance & nonperformance 09-20-2022, 11:35 PM
Replies: 104
Views: 3,144
Posted By bobxyz
Great, glad the oil is flowing again. After...

Great, glad the oil is flowing again.

After looking at more pictures, I now think that the crank/rod bearings are lubricated from the oil galley after the filter (which makes better sense). ...
Forum: projects & restorations 09-20-2022, 07:55 PM
Replies: 107
Views: 110,067
Posted By bobxyz
Cool project! An 8051 is really slow at...

Cool project!

An 8051 is really slow at doing realtime multiplies with any sort of precision, and realtime divides are pretty much unusable. For a MAF based system, the MAF automatically...
Forum: maintenance & nonperformance 09-19-2022, 11:44 PM
Replies: 104
Views: 3,144
Posted By bobxyz
I think the 3 outermost holes between the...

I think the 3 outermost holes between the cylinders on the intake side all drain to the sump, but I'm not certain. If you haven't already dumped all 4 qts of oil on the ground, I'd just spin the aux...
Forum: maintenance & nonperformance 09-19-2022, 08:44 AM
Replies: 104
Views: 3,144
Posted By bobxyz
That oil filter relocation kit might be giving...

That oil filter relocation kit might be giving problems if it has a stuck anti-drainback valve, or is plumbed backwards (in-in out-out vs in-out in-out). If it still fits, I'd try installing the...
Forum: maintenance & nonperformance 09-18-2022, 08:36 PM
Replies: 104
Views: 3,144
Posted By bobxyz
I haven't looked carefully, but I'd guess that...

I haven't looked carefully, but I'd guess that the oil flow enters the bolt hole above the block threads (via the teardrop) and splits off into head passages before being blocked by the head washer...
Forum: maintenance & nonperformance 09-18-2022, 05:54 PM
Replies: 104
Views: 3,144
Posted By bobxyz
You could try putting your thumb over the oil...

You could try putting your thumb over the oil filter hole and see if it builds pressure when spinning. From the filter, the oil passage runs up the side of the block and then (IIRC) joins one of the...
Forum: maintenance & nonperformance 09-18-2022, 04:49 PM
Replies: 104
Views: 3,144
Posted By bobxyz
When the engine was running last, did the oil...

When the engine was running last, did the oil pressure light in the dashboard go out? And does it turn on now before you crank the engine?

Getting oil out of the filter hole without filter, but...
Forum: maintenance & nonperformance 09-16-2022, 07:14 PM
Replies: 7
Views: 644
Posted By bobxyz
I think so. Go to https://ozvolvo.org/archive/,...

I think so. Go to https://ozvolvo.org/archive/, and if you search for 1984, which should be close to 1983, you can find a wiring greenbook. Pgs 57,61 have a drawing of the pumps and wires.
Forum: maintenance & nonperformance 09-15-2022, 08:23 PM
Replies: 7
Views: 644
Posted By bobxyz
The washer pump wires on my '85 were crumbling to...

The washer pump wires on my '85 were crumbling to bits too. I ended up sliding pieces of heat shrink tubing over each wire and shoving it up into the loom as far as possible. Hopefully, the loom...
Forum: aftermarket engine management 09-10-2022, 03:00 PM
Replies: 12
Views: 791
Posted By bobxyz
First off, thanks for supporting and growing the...

First off, thanks for supporting and growing the DIY EFI community and DIYautotune though all the years!

--------------

For the EFI Tuners' Guide, you're trying to cover a huge range of...
Forum: aftermarket engine management 08-29-2022, 07:51 PM
Replies: 40
Views: 7,401
Posted By bobxyz
7+ years ago, I tore apart a broken DSM CAS and...

7+ years ago, I tore apart a broken DSM CAS and started a thread. I just re-hosted the lost photosuckit pictures, see: DSM CAS Teardown (http://forums.turbobricks.com/showthread.php?p=5341589)

I...
Forum: performance & modifications 08-28-2022, 09:55 PM
Replies: 5
Views: 1,061
Posted By bobxyz
Something's certainly wonky with your wiring or...

Something's certainly wonky with your wiring or measurements.


If this is accurate, you have a ~10v drop over <1ohm, so at least 10Amps is flowing, which is enough to blow the 3Amp MS fuse. I'd...
Forum: performance & modifications 08-28-2022, 10:41 AM
Replies: 5
Views: 1,061
Posted By bobxyz
Huh? I'm not understanding this. pin 87 at the...

Huh? I'm not understanding this. pin 87 at the main RELAY? And where exactly are you unplugging the battery hot wire, and which side of the unplugged section are you measuring?

I think your...
Forum: maintenance & nonperformance 08-27-2022, 01:46 PM
Replies: 7
Views: 1,037
Posted By bobxyz
Try the brickboard FAQ and see if it helps. ...

Try the brickboard FAQ and see if it helps. https://brickboard.com/FAQ/700-900/ElectricalInstruments.htm
The rear differential sensor wires go through a couple connectors, to the cluster, and end...
Forum: maintenance & nonperformance 08-27-2022, 12:54 PM
Replies: 5
Views: 830
Posted By bobxyz
From your description, and from looking at the...

From your description, and from looking at the TP30808 greenbook, I think your bulb may be in backwards and there's a problem in the headlight switch to the 21W filament wiring. [Note: there's 2...
Forum: performance & modifications 08-19-2022, 07:19 PM
Replies: 11
Views: 1,168
Posted By bobxyz
Have you checked that there is an appropriate...

Have you checked that there is an appropriate pullup resistor installed somewhere, and that it's the correct value? (Use a multimeter to measure resistance when powered off and disti connector is...
Forum: performance & modifications 08-19-2022, 06:25 PM
Replies: 11
Views: 1,168
Posted By bobxyz
Are you running a fixed LH2.2 distributor, or...

Are you running a fixed LH2.2 distributor, or some sort of locked down mechanical advance distributor? When you say the advance drifts, how much over what RPM range? What's your Tooth #1 Angle (or...
Forum: performance & modifications 08-17-2022, 12:05 AM
Replies: 9
Views: 1,232
Posted By bobxyz
I checked and MS fires the sparks in A-B-C-D...

I checked and MS fires the sparks in A-B-C-D order, so they should be connected up 1-3-4-2. Spark D firing #4 won't work.

[Since it's running wasted spark, 1-2-4-3 would work too -- as a quick...
Forum: performance & modifications 08-16-2022, 11:43 AM
Replies: 9
Views: 1,232
Posted By bobxyz
Check the MS hardware manual (I don't have it...

Check the MS hardware manual (I don't have it here), but I think you want it wired SpkA-1 SpkB-3 SpkC-4 SpkD-2.

Did you align the 60-2 wheel per LH2.4 instructions or original B21FT instructions? ...
Forum: performance & modifications 08-16-2022, 09:20 AM
Replies: 9
Views: 1,232
Posted By bobxyz
Check that wasted sparks are getting to the...

Check that wasted sparks are getting to the correct cylinders.

Do you have 2 or 4 wires going to the COPs? If 2 wires, from the CANbus/testmodes menu, verify that turning on SparkA/CoilA causes...
Forum: aftermarket engine management 08-11-2022, 11:49 PM
Replies: 7
Views: 691
Posted By bobxyz
Try selecting the older style COMx port from the...

Try selecting the older style COMx port from the TunerStudio - Auto Device Detect menu instead of the D2XX port, and see if it behaves any better. Or try a different USB-to-serial adapter cable.
...
Forum: performance & modifications 08-11-2022, 09:02 AM
Replies: 20
Views: 1,848
Posted By bobxyz
I looked at your log and agree with Kenny et. al....

I looked at your log and agree with Kenny et. al. As you said, you were bouncing off the rev limiter: -6deg advance for most the the pull, with an occasional spark cut. AFR drops and then sticks at...
Forum: performance & modifications 08-10-2022, 07:33 PM
Replies: 20
Views: 1,848
Posted By bobxyz
I'd start by checking that your MAP hose, and...

I'd start by checking that your MAP hose, and others, are still attached.

You can also run a MS Tooth Log during cranking as a simple compression check - the speed variation / tooth time variation...
Forum: maintenance & nonperformance 08-05-2022, 09:02 AM
Replies: 23
Views: 1,154
Posted By bobxyz
Glad you figured it out. You'll need to install...

Glad you figured it out. You'll need to install the cluster, or add a blocking diode in the exciter wire, to fix the issue. If you just disconnect the wire, the battery may not charge.

I have a...
Forum: maintenance & nonperformance 08-04-2022, 11:07 PM
Replies: 23
Views: 1,154
Posted By bobxyz
OK, no console, so the alternator light isn't the...

OK, no console, so the alternator light isn't the culprit. :-(

You're running a Denso, so no external voltage regulator. I looked at the first set of pics in high res, and the orange and yellow...
Forum: maintenance & nonperformance 08-04-2022, 06:49 PM
Replies: 23
Views: 1,154
Posted By bobxyz
^^^ That's a good idea. :nod: The OP's...

^^^ That's a good idea. :nod:

The OP's problem showed up after relocating/replacing the battery&cables, which might have cleaned up some crusty connections just enough to keep the relays on when...
Forum: maintenance & nonperformance 08-04-2022, 08:53 AM
Replies: 23
Views: 1,154
Posted By bobxyz
There's hardly any wiring left in that corner of...

There's hardly any wiring left in that corner of the engine bay! Where'd the rest of it go? (headlight relay, washer pumps, turn signals, etc.)

I'm guessing that you have the original 1980...
Forum: maintenance & nonperformance 08-04-2022, 12:48 AM
Replies: 23
Views: 1,154
Posted By bobxyz
YIKES!!! That's some exceptional Kustom work.......

YIKES!!! That's some exceptional Kustom work.... My condolences. If it were me, I'd redo the whole MS install and battery relocation, but I'm pretty AR.

- What's the silver box with the black...
Forum: maintenance & nonperformance 08-03-2022, 11:49 PM
Replies: 23
Views: 1,154
Posted By bobxyz
^^^ that's great info! I'm assuming you have...

^^^ that's great info!

I'm assuming you have the 1980 greenbook (if not, ozvolvo.org/archive). Stopping when you pull fuse 12 is a good clue. Fuse 12 is listed as: backup lights, electric...
Forum: maintenance & nonperformance 08-03-2022, 07:57 PM
Replies: 23
Views: 1,154
Posted By bobxyz
Here's the commonly used MS wiring diagram for...

Here's the commonly used MS wiring diagram for power, MS relays, and MS fuses:
http://www.msextra.com/doc/pdf/html/MS2V30_Hardware-3.4.pdf/MS2V30_Hardware-3.4014.png...
Forum: maintenance & nonperformance 08-03-2022, 09:00 AM
Replies: 23
Views: 1,154
Posted By bobxyz
Do you have any notes from the PO on how they...

Do you have any notes from the PO on how they wired up MS, specifically the added main&fuel relays? Did you do any other rewiring with the battery relocation? How is the +12volt junction box (black...
Forum: maintenance & nonperformance 08-03-2022, 08:55 AM
Replies: 28
Views: 1,722
Posted By bobxyz
Good, that seems about right, and means that...

Good, that seems about right, and means that you're getting spark up to at least the powerstage.

An easy way to check for spark out of the coil is to use a spare spark plug wire clip and a kitchen...
Forum: maintenance & nonperformance 08-02-2022, 07:21 PM
Replies: 5
Views: 785
Posted By bobxyz
There's a drawing of the original connector on pg...

There's a drawing of the original connector on pg 5 of TP30808-1 (ozvolvo.org/archive). Looks like there are 2 black wires, a big one for ground and a smaller one for switched +12v from fuse #1. ...
Forum: maintenance & nonperformance 08-02-2022, 02:36 PM
Replies: 28
Views: 1,722
Posted By bobxyz
To get spark, you only need a few things: -...

To get spark, you only need a few things:
- 60-2 toothed flywheel/flexplate
- CPS Sensor wired to EZK
- Power&Ground at EZK
- EZK spark output wire to powerstage
- Power&Ground at powerstage
-...
Forum: article composition 08-01-2022, 10:09 PM
Replies: 347
Views: 359,641
Posted By bobxyz
There's a new, or at least pretty new, section on...

There's a new, or at least pretty new, section on Dave's site that has some really great LH ECU and EZK diagrams, including one for B234F 16V - see:
...
Forum: maintenance & nonperformance 08-01-2022, 08:25 PM
Replies: 28
Views: 1,722
Posted By bobxyz
Some of your measurements are wonky. Let's go...

Some of your measurements are wonky. Let's go back a step.

- Was the donor engine and 240 LH2.4 harness working before the swap?
- Was the harness removed and reinstalled, or did you leave it...
Forum: maintenance & nonperformance 08-01-2022, 01:14 PM
Replies: 28
Views: 1,722
Posted By bobxyz
I didn't go through all your details, but a...

I didn't go through all your details, but a couple quick checks are:
- With key on, do you get a 1-1-1 (or other) diag blink code from both EZK and ECU (probe holes #2 )? If not, your main...
Forum: maintenance & nonperformance 07-29-2022, 07:19 PM
Replies: 20
Views: 1,505
Posted By bobxyz
Good, hope that the new sensor fixes the poor...

Good, hope that the new sensor fixes the poor running and poor mileage problems. I'd send an email to IPD telling them about the problem and suggesting that they check their stock for any other...
Forum: maintenance & nonperformance 07-24-2022, 11:12 PM
Replies: 20
Views: 1,505
Posted By bobxyz
With a LH2.4 sensor, you'll get twice the...

With a LH2.4 sensor, you'll get twice the resistance measuring pin 1 to 2 on the ECT. For example, say you measure ~1550 ohms pin1 to block ground, and the same ~1550 ohms for pin2 to ground. ...
Forum: maintenance & nonperformance 07-23-2022, 11:17 AM
Replies: 20
Views: 1,505
Posted By bobxyz
With the key off, unplug the sensor and then...

With the key off, unplug the sensor and then measure the resistance between pin 1 and the intake manifold ground bolt. Repeat for pin 2. Look up these resistances on cleanflametrap's chart to see...
Forum: maintenance & nonperformance 07-22-2022, 05:34 PM
Replies: 20
Views: 1,505
Posted By bobxyz
Art (aka cleanflametrap) posted a nice graph of...

Art (aka cleanflametrap) posted a nice graph of the temperature sensor with the voltage levels added on the right side here: https://forums.turbobricks.com/showpost.php?p=5921970&postcount=19

If...
Forum: maintenance & nonperformance 07-21-2022, 12:19 AM
Replies: 9
Views: 783
Posted By bobxyz
On a non-interference engine, it doesn't matter...

On a non-interference engine, it doesn't matter what the crank position is when checking the shims (timing belt off), but you can rotate the crank ~1/4 turn from TDC just to be safe (which puts all...
Forum: performance & modifications 07-20-2022, 02:51 PM
Replies: 19
Views: 1,687
Posted By bobxyz
Woo Hoo! Definitely runs better than a penguin. ...

Woo Hoo! Definitely runs better than a penguin. :cool:
Forum: performance & modifications 07-19-2022, 08:13 PM
Replies: 19
Views: 1,687
Posted By bobxyz
[BTW your new pictures are huge.] I looked...

[BTW your new pictures are huge.]

I looked up the Spark Output setting and, for MS2, it changes depending on what circuit you added to the MS2 board.

If you added a couple resistors to drive...
Forum: performance & modifications 07-19-2022, 06:59 PM
Replies: 19
Views: 1,687
Posted By bobxyz
I think part of the difference between your setup...

I think part of the difference between your setup and the setup in the DSM CAS thread here is that the CAS can be rotated a bit on the Yoshifab adapter for smaller timing adjustments. I'd guess that...
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