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Search: Posts Made By: bobxyz
Forum: performance & modifications 08-12-2018, 01:05 PM
Replies: 6
Views: 337
Posted By bobxyz
You'll want the turbo LH2.4 ECU and EZK boxes,...

You'll want the turbo LH2.4 ECU and EZK boxes, plus the injector resistor pack with wiring harness.

Re-use your 240 engine harness, but keep the MAF connector and extra wire from the 940 so that...
Forum: maintenance & nonperformance 08-06-2018, 12:07 AM
Replies: 30
Views: 703
Posted By bobxyz
Here's another example of spider eyes in my '85,...

Here's another example of spider eyes in my '85, with the Hella H1/H4 reflector assemblies, but no stone covers. (Thanks Philski!)
https://image.ibb.co/bt1KBK/spider_eyes.jpg

The dual round...
Forum: maintenance & nonperformance 08-05-2018, 09:55 PM
Replies: 17
Views: 579
Posted By bobxyz
I was curious and found this brickboard post that...

I was curious and found this brickboard post that shows that the filter screen is actually a stack of filter screens:
https://www.brickboard.com/PRINT/?top=1408833

If you flush both inlet and...
Forum: performance & modifications 08-04-2018, 01:09 PM
Replies: 9
Views: 563
Posted By bobxyz
There's a graph in the regina greenbook. 1bar,...

There's a graph in the regina greenbook. 1bar, linear, ~0.5volts to ~4.4volts.
Forum: maintenance & nonperformance 08-04-2018, 01:05 PM
Replies: 15
Views: 548
Posted By bobxyz
For hanging heavy pictures on a wall, they use...

For hanging heavy pictures on a wall, they use plastic coated cable, and double barrel crimps to loop the cable.
https://images-na.ssl-images-amazon.com/images/I/51c-33pL86L._AC_US218_.jpg

Try an...
Forum: projects & restorations 08-03-2018, 06:47 PM
Replies: 2,079
Views: 197,125
Posted By bobxyz
It rotates 90deg forward in this pic and bolts to...

It rotates 90deg forward in this pic and bolts to the bottom & right side of manifold (the right side bolt also goes through spark plug heat shield). [click for full size]...
Forum: maintenance & nonperformance 07-30-2018, 08:50 AM
Replies: 17
Views: 983
Posted By bobxyz
I think the 131 code due to the RPM wire that...

I think the 131 code due to the RPM wire that runs from the EZK to the ECU box. The wire is all within the cabin, so it's unlikely to have been damaged. I'd inspect the EZK and ECU connectors...
Forum: performance & modifications 07-27-2018, 08:40 PM
Replies: 5
Views: 427
Posted By bobxyz
I'd assume the pin numbers on the connector are...

I'd assume the pin numbers on the connector are the same as LH/Fenix. If you're looking at the harness, with the cable on the left, the ECU pins are:
1---to---18
-19-to-35

The EZK pins are:...
Forum: maintenance & nonperformance 07-25-2018, 11:53 PM
Replies: 3
Views: 324
Posted By bobxyz
Oops, sorry. You're looking for high voltage...

Oops, sorry. You're looking for high voltage discharge from the coil/coil wire/distributor/spark plug wires/spark plugs boots. If anything along that path is damaged, you can end up with a weak...
Forum: maintenance & nonperformance 07-25-2018, 10:20 PM
Replies: 3
Views: 324
Posted By bobxyz
Find a dark area at night, pop the hood while...

Find a dark area at night, pop the hood while idling, and look for a light show. A spray misting bottle can help if it's not so humid out.
Forum: maintenance & nonperformance 07-25-2018, 10:16 PM
Replies: 5
Views: 427
Posted By bobxyz
On my '85 with a cable driven speedo, there's a...

On my '85 with a cable driven speedo, there's a separate small box connected to the speedo with a short cable that turns on the Lambda light at a fixed mileage interval. There's a reset button in...
Forum: maintenance & nonperformance 07-24-2018, 10:05 PM
Replies: 39
Views: 1,896
Posted By bobxyz
All sorts of wiring diagrams and other good info...

All sorts of wiring diagrams and other good info is available at: http://volvowiringdiagrams.com/

The EZ116K box conditions the VR CPS signal using an analog comparator setup as a zero crossing...
Forum: aftermarket engine management 07-24-2018, 09:51 PM
Replies: 5
Views: 342
Posted By bobxyz
You want to plumb it so: wastegate goes to...

You want to plumb it so:
wastegate goes to common port
turbo compressor goes to port that flows to common port when not energized
3rd port open (not blocked)

When no power is applied, it...
Forum: maintenance & nonperformance 07-23-2018, 10:16 PM
Replies: 12
Views: 440
Posted By bobxyz
It sure sounds like the tach is drawing too much...

It sure sounds like the tach is drawing too much power and killing the spark. Normally, the tach is a very small electrical load compared to the several amps of current needed to charge the coil. ...
Forum: maintenance & nonperformance 07-21-2018, 06:24 PM
Replies: 12
Views: 440
Posted By bobxyz
Where are you plugging in the coil wire on the...

Where are you plugging in the coil wire on the tach? The top 3 spades are for the small clock harness, the bottom 2 spades are coil wire for tach (use either one, they're connected together within...
Forum: maintenance & nonperformance 07-21-2018, 12:49 PM
Replies: 8
Views: 370
Posted By bobxyz
Check with a mechanical engineer, but I don't...

Check with a mechanical engineer, but I don't think the tooth count on the planetary gear matters as long as it fits correctly. I think the reduction ratio is just (sun gear tooth count / ring gear...
Forum: performance & modifications 07-20-2018, 08:39 AM
Replies: 36
Views: 1,434
Posted By bobxyz
A couple more useful tidbits: There's...

A couple more useful tidbits:

There's excerpts from a Volvo Greenbook that describe Rex/Regina in detail at:
https://people.ohio.edu/ridgely/Volvo_docs/

This includes full pinout and signal...
Forum: performance & modifications 07-19-2018, 09:14 AM
Replies: 36
Views: 1,434
Posted By bobxyz
My best guess for the ignition box is: The...

My best guess for the ignition box is:

The ZC98902VP is another custom (mask rom) Motorola processor (VP=automotive rated 28-pin plastic pkg), probably a 6804 or 6805 family due to the smaller...
Forum: maintenance & nonperformance 07-14-2018, 04:40 PM
Replies: 24
Views: 750
Posted By bobxyz
There's a flex fuse shown just to the left of the...

There's a flex fuse shown just to the left of the white speedo housing in the above picture. It supplies 12volts from the 3-pin connector to the speedo and console. Try removing and cleaning the...
Forum: performance & modifications 07-14-2018, 04:17 PM
Replies: 36
Views: 1,434
Posted By bobxyz
Your pictures are much different that the chipped...

Your pictures are much different that the chipped Renix pictures I found.

I can decipher a little of your chip code, and can add some guesses too.

ZC407531VFN << this is a custom motorola CPU...
Forum: performance & modifications 07-13-2018, 07:39 PM
Replies: 36
Views: 1,434
Posted By bobxyz
The Motorola 68701 is the EPROM version of the...

The Motorola 68701 is the EPROM version of the 6801, a successor to the 6800 and a predecessor of the much better 68HC11....
Forum: maintenance & nonperformance 07-13-2018, 03:24 PM
Replies: 53
Views: 1,808
Posted By bobxyz
The plug wire resistance range was quoted from...

The plug wire resistance range was quoted from IPD. I checked a couple other places and a better check would be: all wires under 10,000 ohms resistance, and the plug wires fairly close to each...
Forum: maintenance & nonperformance 07-12-2018, 07:54 PM
Replies: 10
Views: 573
Posted By bobxyz
I'm not sure if it's the same, but Bentley has...

I'm not sure if it's the same, but Bentley has the specs for the 240 EGR w/ EZK116

pg 253-6 EGR vacuum booster 85 +/-10 ohms
Temp sensor at ambient 500-1000 ohms

[And I think the EZK code...
Forum: maintenance & nonperformance 07-11-2018, 10:17 PM
Replies: 53
Views: 1,808
Posted By bobxyz
Glad it's doing better. Next time you're at the...

Glad it's doing better. Next time you're at the salvage yard, find a spare set of plug wires, cap, rotor to throw in the trunk for luck -- the plug wires should measure around 1500 to 3000 ohms, or...
Forum: maintenance & nonperformance 07-11-2018, 09:39 PM
Replies: 3
Views: 303
Posted By bobxyz
There's a '93 240 greenbook at...

There's a '93 240 greenbook at volvowiringdiagrams too - it has a little more detail. If it's factory wired, I'd expect the connectors to be nearby where they need to go. Pull the handbrake console...
Forum: maintenance & nonperformance 07-11-2018, 12:03 AM
Replies: 53
Views: 1,808
Posted By bobxyz
Are you using the original K-Jet...

Are you using the original K-Jet mechanical+vacuum advance distributor? Maybe with the advance mechanism "fixed" in place? If so, there's a chance that the rotor alignment is off. An easy test is...
Forum: maintenance & nonperformance 07-10-2018, 07:47 PM
Replies: 53
Views: 1,808
Posted By bobxyz
It sure sounds like everything is fine to the end...

It sure sounds like everything is fine to the end of the coil wire, but goes bad somewhere between there and the spark plugs. How exactly are you testing to find the weak spark? Plug in a spare set...
Forum: maintenance & nonperformance 07-09-2018, 10:08 PM
Replies: 53
Views: 1,808
Posted By bobxyz
I'm pretty sure that if the center of the rotor...

I'm pretty sure that if the center of the rotor lines up with the notch on the housing at TDC, it's OK. Even if the drive gear is off a tooth, you'd need to rotate the housing by a tooth's worth to...
Forum: maintenance & nonperformance 07-09-2018, 07:27 PM
Replies: 17
Views: 983
Posted By bobxyz
If you're wiring all the way from the EZK to...

If you're wiring all the way from the EZK to within an inch of the CPS sensor body, then yes, you want to connect all 3 wires at the EZK but leave the shield/drain wire disconnected at the sensor...
Forum: maintenance & nonperformance 07-09-2018, 07:19 PM
Replies: 53
Views: 1,808
Posted By bobxyz
Any diag codes from the EZK after trying to run? ...

Any diag codes from the EZK after trying to run?

[And just to cover the bases, re-check your plug wires. 1-3-4-2 as the distributor rotor moves in a clockwise direction as viewed from above.]
Forum: maintenance & nonperformance 07-09-2018, 12:00 AM
Replies: 53
Views: 1,808
Posted By bobxyz
The easy test is to measure the voltage on the...

The easy test is to measure the voltage on the coil with key on, but not running. You should see very close to full battery voltage. If the ballast resistor is still in the circuit, voltage will be...
Forum: maintenance & nonperformance 07-08-2018, 10:12 PM
Replies: 53
Views: 1,808
Posted By bobxyz
Have you checked that the distributor drive shaft...

Have you checked that the distributor drive shaft is oriented correctly? If you take the cap off, there's a groove on the edge of the distributor body. The tip of the rotor should be ~centered over...
Forum: maintenance & nonperformance 07-07-2018, 02:29 PM
Replies: 17
Views: 2,024
Posted By bobxyz
See page 1 of the '93 940 diagrams here:...

See page 1 of the '93 940 diagrams here: http://www.volvowiringdiagrams.com/?dir=volvo/940%20Wiring%20Diagrams
The dashed box is LH2.4 only.
Forum: maintenance & nonperformance 07-05-2018, 07:47 PM
Replies: 17
Views: 983
Posted By bobxyz
Here's a link for shielded 2-wire cable: ...

Here's a link for shielded 2-wire cable: https://www.diyautotune.com/product/wire-2-core-shielded-22-gauge-10-39/

Or, you could try using a piece of USB 2.0 cable - the inner wires are pretty...
Forum: performance & modifications 07-05-2018, 07:42 PM
Replies: 102
Views: 4,157
Posted By bobxyz
That looks like you have a replacement AW71 from...

That looks like you have a replacement AW71 from a pre LH2.4 car that did not have the molded-in cutout notch for the CPS, and someone hacked out the CPS hole by hand. If you're lucky, it might have...
Forum: maintenance & nonperformance 07-03-2018, 09:02 AM
Replies: 6
Views: 457
Posted By bobxyz
Yes, as the experts have said, check fuse 6 (your...

Yes, as the experts have said, check fuse 6 (your brake lights are not working at all). Hopefully, it's just fuse contact corrosion or a cracked fuse. If it's blown, you may need to figure out what...
Forum: maintenance & nonperformance 07-03-2018, 12:18 AM
Replies: 6
Views: 457
Posted By bobxyz
That's certainly a strange one. I can't think of...

That's certainly a strange one. I can't think of anything simple that's common to the two circuits. Is everything working normally otherwise, specifically:
- brake lights work and are evenly...
Forum: maintenance & nonperformance 07-02-2018, 09:01 PM
Replies: 20
Views: 1,503
Posted By bobxyz
My transmission's still on the floor of the...

My transmission's still on the floor of the garage (lingering back problems, #*&!@*), and I knew where the extra gear assy was on the shelf, so it was easy to measure both. The total length of...
Forum: maintenance & nonperformance 07-02-2018, 06:43 PM
Replies: 20
Views: 1,503
Posted By bobxyz
Try this:...

Try this: http://www.forums.turbobricks.com/showthread.php?t=325518
or this: http://forums.turbobricks.com/showthread.php?t=272631

The shaft on the gear is different between auto and manual. I...
Forum: maintenance & nonperformance 07-01-2018, 07:52 PM
Replies: 39
Views: 1,896
Posted By bobxyz
Any fault codes from the EZK, or ECU? When...

Any fault codes from the EZK, or ECU? When trying to measure CPS voltage, are you using the AC voltage setting on the meter?
Forum: aftermarket engine management 06-28-2018, 12:50 AM
Replies: 11
Views: 1,074
Posted By bobxyz
Thanks! I'm still learning about tuning and I'll...

Thanks! I'm still learning about tuning and I'll file this one away as: "if the AFR doesn't match the PW, check the pump!"

Looking at your graph, the peak PW of 13.8ms and 6100rpm means that the...
Forum: performance & modifications 06-25-2018, 08:37 PM
Replies: 12
Views: 1,308
Posted By bobxyz
You want to drive the Volvo 240 speedo with an AC...

You want to drive the Volvo 240 speedo with an AC signal (it originally comes from a VR sensor, which is an AC signal). Looks like it's the "OUT1" pin on the Dakota box.

See:...
Forum: performance & modifications 06-24-2018, 07:35 PM
Replies: 13
Views: 1,129
Posted By bobxyz
Generating LH2.4 VSS from Cable Speedometer Cruise Sensor

The early 240s use a cable driven speedometer. When cruise control is installed, a VR sensor in the back of the cable driven speedometer is used. (click on pics for full size)
...
Forum: performance & modifications 06-23-2018, 12:53 PM
Replies: 16
Views: 940
Posted By bobxyz
The standard B230 LH2.4 temperature sensor is...

The standard B230 LH2.4 temperature sensor is actually 2 sensors in one housing. It has 2 pins and uses the block for the grounds. With LH2.4, one goes to the EZK box and one to the ECU box. ...
Forum: performance & modifications 06-22-2018, 12:26 AM
Replies: 13
Views: 1,129
Posted By bobxyz
Quick Update: I tried wiring the cruise VR...

Quick Update:
I tried wiring the cruise VR sensor from an early 80s cable speedo to a 91 (pre-ABS) speedo. It seems to be sensitive enough to detect the lower signal voltage from the cruise VR...
Forum: performance & modifications 06-21-2018, 11:22 PM
Replies: 13
Views: 1,129
Posted By bobxyz
On LH2.4 cars, the VR sensor on the rear...

On LH2.4 cars, the VR sensor on the rear differential goes to the speedometer. On the speedo is a circuit board that both drives the needle and generates the Vss signal used by the LH2.4 ECU. See...
Forum: maintenance & nonperformance 06-21-2018, 09:44 PM
Replies: 7
Views: 654
Posted By bobxyz
Firmly clogged cat? The only time I've seen...

Firmly clogged cat?

The only time I've seen hydrolock is from some doofus in a Jeep going through a wide stream over-and-over again. He got some impressive rooster tails of water before dying...
Forum: aftermarket engine management 06-19-2018, 08:47 PM
Replies: 6
Views: 965
Posted By bobxyz
You're referencing Amp connectors that may or may...

You're referencing Amp connectors that may or may not be fully compatible with the 30+ year old Bosch ECU/EZK connectors - you'd probably need to ask an Apps Engineer at TE to find out if they're...
Forum: maintenance & nonperformance 06-18-2018, 02:57 PM
Replies: 6
Views: 432
Posted By bobxyz
^^^ someone must have had too much fun this...

^^^ someone must have had too much fun this weekend....

LH2.2/EZK117 uses a pulse-per-cylinder hall sensor in the distributor. LH2.4/EZK116 uses a 60-2 flywheel and CPS. There's no way that...
Forum: performance & modifications 06-15-2018, 02:33 PM
Replies: 18
Views: 1,448
Posted By bobxyz
If you're not set on a Volvo 016 AMM, there are...

If you're not set on a Volvo 016 AMM, there are better options (newer technology). From the above ipdown.net link, there's a Bosch datasheet for a hot film, vs. hot wire, AMM. Quoting the...
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