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Search: Posts Made By: ZVOLV
Forum: maintenance & nonperformance Yesterday, 06:49 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
You could have a dead O2 sensor. I would get a...

You could have a dead O2 sensor. I would get a meter on the single green wire and check the voltage to ground. If the sensor is pegged at 0.1V or 0.9V once the engine is warm, you have a bad sensor...
Forum: maintenance & nonperformance 01-23-2022, 04:10 PM
Replies: 18
Views: 2,563
Posted By ZVOLV
Never replace parts without doing circuit...

Never replace parts without doing circuit verification. You need to make sure the circuit isn't high resistance/open circuit going from the sensor to the computer. One wire goes to the fuel box, and...
Forum: maintenance & nonperformance 01-22-2022, 06:51 PM
Replies: 26
Views: 735
Posted By ZVOLV
Good.

Good.
Forum: maintenance & nonperformance 01-22-2022, 06:10 PM
Replies: 18
Views: 536
Posted By ZVOLV
Get a pressure tester on there.

Get a pressure tester on there.
Forum: maintenance & nonperformance 01-22-2022, 12:40 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
You're almost there! You could have air...

You're almost there!

You could have air leaks or a bad MAF. I would unplug the MAF and see if it runs ok.
Forum: maintenance & nonperformance 01-20-2022, 04:16 PM
Replies: 3
Views: 325
Posted By ZVOLV
I wouldn't use a generic code reader. I would use...

I wouldn't use a generic code reader. I would use a high level scan tool. Little handheld ones can show the wrong code, unless you are just looking at generic emissions codes.
Forum: performance & modifications 01-19-2022, 03:14 AM
Replies: 8
Views: 3,068
Posted By ZVOLV
https://postlmg.cc/WqzkVyvW It is likely the...

https://postlmg.cc/WqzkVyvW

It is likely the injectors, MAF, ECM mismatch.

And any air leaks or timing issues.
Forum: maintenance & nonperformance 01-19-2022, 03:10 AM
Replies: 26
Views: 735
Posted By ZVOLV
Unplug the ECM and see if it goes away. ...

Unplug the ECM and see if it goes away.

Perform a parasitic drain test.
Forum: performance & modifications 01-19-2022, 12:27 AM
Replies: 12
Views: 633
Posted By ZVOLV
Do it

Do it
Forum: maintenance & nonperformance 01-16-2022, 05:24 PM
Replies: 5
Views: 377
Posted By ZVOLV
Smoke test

Smoke test
Forum: maintenance & nonperformance 01-16-2022, 03:31 PM
Replies: 5
Views: 350
Posted By ZVOLV
Three turns is the number? Interesting. If...

Three turns is the number? Interesting.

If the coil spring has become unwound, a trick is: count how many turns it takes to make it stop. Preload it HALF that many turns for the correct...
Forum: maintenance & nonperformance 01-16-2022, 02:27 PM
Replies: 5
Views: 377
Posted By ZVOLV
air leak

air leak
Forum: maintenance & nonperformance 01-16-2022, 02:22 PM
Replies: 9
Views: 413
Posted By ZVOLV
I'd put fresh high-quality O2 sensors on while...

I'd put fresh high-quality O2 sensors on while you are in there. It may help with the fuel economy.

I believe a cracked exhaust manifold can cause a cat to fail. Extra air can cause it to get...
Forum: maintenance & nonperformance 01-16-2022, 12:16 PM
Replies: 9
Views: 413
Posted By ZVOLV
Yep. I do them all the time and they look fine ...

Yep. I do them all the time and they look fine Oil/coolant consumption can kill em. Misfires kill em fast too. Basically anything that contaminates or overheats it.
Forum: maintenance & nonperformance 01-16-2022, 11:28 AM
Replies: 9
Views: 413
Posted By ZVOLV
It needs a cat. Make sure the manifold isn't...

It needs a cat. Make sure the manifold isn't cracked while you are in there.
Forum: maintenance & nonperformance 01-16-2022, 11:26 AM
Replies: 5
Views: 350
Posted By ZVOLV
Common failures are an open coil spring or high...

Common failures are an open coil spring or high resistance somewhere in the circuit.


After a re-read of your post, maybe the module is dead. Got water leaks? I would confirm power and ground to...
Forum: maintenance & nonperformance 01-15-2022, 01:33 AM
Replies: 95
Views: 5,940
Posted By ZVOLV
Good to hear! I'd get fresh plugs, wires,...

Good to hear!

I'd get fresh plugs, wires, cap, rotor and oil change on there as soon as you can.
Forum: performance & modifications 01-09-2022, 01:23 PM
Replies: 13
Views: 2,781
Posted By ZVOLV
I sold my 1990 240 before I could ever get it to...

I sold my 1990 240 before I could ever get it to work. I tried the two pickup blade sensor and it read about double the speed.

Good luck. Post back with the results.
Forum: events 01-09-2022, 01:49 AM
Replies: 145
Views: 76,305
Posted By ZVOLV
I am gonna sleep in the park the night before the...

I am gonna sleep in the park the night before the event.
Forum: maintenance & nonperformance 12-31-2021, 04:47 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Unplug the LH box and see if the lamp still...

Unplug the LH box and see if the lamp still illuminates on the control (ground) circuit.

The LH box lives by the passenger's right foot.
Forum: maintenance & nonperformance 12-31-2021, 11:27 AM
Replies: 22
Views: 2,689
Posted By ZVOLV
I would be using a scan tool to see if the cam is...

I would be using a scan tool to see if the cam is responding properly to commands. Without scan tool data, you are in the dark.

The aftermarket ones should be able to command the cam. The problem...
Forum: maintenance & nonperformance 12-30-2021, 05:27 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Did you do your test with the connector plugged...

Did you do your test with the connector plugged in, or unplugged from the injector??

If you did it plugged in, you are seeing the current that passed thru the injector which is showing showing...
Forum: maintenance & nonperformance 12-29-2021, 10:29 PM
Replies: 22
Views: 2,689
Posted By ZVOLV
What about the camshaft reset valve assembly? ...

What about the camshaft reset valve assembly?

https://www.bing.com/videos/search?view=detail&mid=594085D40034F186E2E1594085D40034F186E2E1&q=volvo


Did you just do the solenoid? Or the entire...
Forum: maintenance & nonperformance 12-29-2021, 10:28 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
....

....
Forum: maintenance & nonperformance 12-29-2021, 10:11 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Fried EZK box

Ok, the injector circuit seems fine after all.

The best way to check a ground circuit is to load it up via the power circuit and a test lamp. You confirm good power AND ground circuit at the same...
Forum: maintenance & nonperformance 12-29-2021, 01:16 AM
Replies: 95
Views: 5,940
Posted By ZVOLV
^^^He's got you covered on the EZK box diag. ...

^^^He's got you covered on the EZK box diag.

I am stepping back and questioning your "no power to the injectors" measurement. I don't trust your measurement at this point. You do NOT measure...
Forum: maintenance & nonperformance 12-29-2021, 12:44 AM
Replies: 95
Views: 5,940
Posted By ZVOLV
https://www.240turbo.com/relay1323592diagram.jpg ...

https://www.240turbo.com/relay1323592diagram.jpg


Key OFF or ON. Lamp illuminate between RED terminal (30) and ground? Yes/No?

Key ON. Lamp illuminate between BLUE/YELLOW terminal (85) and...
Forum: maintenance & nonperformance 12-28-2021, 10:53 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
https://www.240turbo.com/relay1323592diagram.jpg ...

https://www.240turbo.com/relay1323592diagram.jpg




Your test lamp should illuminate, key on, at two of the terminals 30 and 85 at the (radio inteference) INJECTOR RELAY. If you jumped 30...
Forum: maintenance & nonperformance 12-27-2021, 01:08 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Consult a wiring diagram.

Consult a wiring diagram.
Forum: maintenance & nonperformance 12-27-2021, 12:13 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Ok. No power to the injectors and no power to...

Ok. No power to the injectors and no power to your hall sensor....
Forum: maintenance & nonperformance 12-26-2021, 10:30 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Do you have power to the injectors? Does the...

Do you have power to the injectors?

Does the hall sensor have 12V with key ON?
Forum: maintenance & nonperformance 12-23-2021, 12:06 PM
Replies: 22
Views: 2,689
Posted By ZVOLV
Sounds like it is fixed. I've done a lot of cam...

Sounds like it is fixed. I've done a lot of cam actuator solenoids.
Forum: maintenance & nonperformance 12-21-2021, 09:31 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
I start my 740 with a jumper wire to the starter...

I start my 740 with a jumper wire to the starter solenoid. I built a jumper wire with a spade terminal on one side (connected to the starter) and an alligator clip on the other end. I simply turn the...
Forum: maintenance & nonperformance 12-21-2021, 05:51 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Do you have a test lamp?

Do you have a test lamp?
Forum: maintenance & nonperformance 12-21-2021, 02:34 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Terminal 5 at the powerstage= 5V square wave...

Terminal 5 at the powerstage= 5V square wave input from EZK box


DO YOU HAVE INJECTOR PULSE?
Forum: maintenance & nonperformance 12-21-2021, 01:29 PM
Replies: 95
Views: 5,940
Posted By ZVOLV
Do you have injector pulse?

Do you have injector pulse?
Forum: performance & modifications 12-18-2021, 05:12 PM
Replies: 12
Views: 3,201
Posted By ZVOLV
You may have a big air leak somewhere you missed....

You may have a big air leak somewhere you missed. I would perform a smoke test.

The oxygen sensor has nothing to do with breaking up at high boost. The ECM isn't "listening" to the sensor once you...
Forum: maintenance & nonperformance 12-17-2021, 06:32 PM
Replies: 7
Views: 1,244
Posted By ZVOLV
Rear tail lights

Make sure there isn't a short in the FRONT tail lamps?
Forum: performance & modifications 12-17-2021, 12:20 PM
Replies: 12
Views: 3,201
Posted By ZVOLV
The placement of your O2 sensor could be causing...

The placement of your O2 sensor could be causing the mixture to be wrong.
Forum: maintenance & nonperformance 12-14-2021, 02:39 PM
Replies: 7
Views: 1,164
Posted By ZVOLV
LED test lamp to powerstage signal input. BLINK?

LED test lamp to powerstage signal input. BLINK?
Forum: maintenance & nonperformance 12-13-2021, 11:15 PM
Replies: 22
Views: 5,497
Posted By ZVOLV
I used your advice and successfully installed a...

I used your advice and successfully installed a rear main seal while I had the trans out for a manual conversion. Thanks.
Forum: maintenance & nonperformance 12-13-2021, 11:11 PM
Replies: 22
Views: 2,689
Posted By ZVOLV
Ok, so you see how the code changes to a CIRCUIT...

Ok, so you see how the code changes to a CIRCUIT code when you have it unplugged? If there were a problem with the circuit, or an internal electrical issue with the solenoid, you would see a circuit...
Forum: maintenance & nonperformance 12-09-2021, 11:19 PM
Replies: 22
Views: 2,689
Posted By ZVOLV
The CEL doesn't always come on when the fault...

The CEL doesn't always come on when the fault occurs. Depending on the code, it may come on next key cycle.

Toss a solenoid at it and a fresh oil change with the proper viscosity.


You...
Forum: maintenance & nonperformance 12-09-2021, 05:10 PM
Replies: 18
Views: 2,563
Posted By ZVOLV
What's the compression?

What's the compression?
Forum: maintenance & nonperformance 12-09-2021, 02:33 PM
Replies: 28
Views: 3,548
Posted By ZVOLV
^^^good advice Put a pressure tester on it...

^^^good advice

Put a pressure tester on it and put the car on a lift and see where it's leaking out. There is likely an external leak.
Forum: maintenance & nonperformance 12-08-2021, 10:33 PM
Replies: 22
Views: 2,689
Posted By ZVOLV
If the circuit were open, I would expect...

If the circuit were open, I would expect driveability issues. You likely have a failing solenoid or failed actuator. Or possibly a belt/tensioner issue.

I use a scan tool to command the...
Forum: maintenance & nonperformance 12-08-2021, 01:38 PM
Replies: 19
Views: 1,820
Posted By ZVOLV
I'm not sure where to get a replacement pigtail...

I'm not sure where to get a replacement pigtail with a new plastic. Maybe Dave Barton or the dealer.

You CAN just get a wiring lead from IPD for about $6 and re use the plastic. I would run a new...
Forum: maintenance & nonperformance 12-07-2021, 02:30 PM
Replies: 19
Views: 1,820
Posted By ZVOLV
The wiring is likely shorted under the engine

The wiring is likely shorted under the engine
Forum: maintenance & nonperformance 12-03-2021, 11:22 AM
Replies: 8
Views: 1,367
Posted By ZVOLV
I would probably charge an hour to figure it out...

I would probably charge an hour to figure it out and a couple hours to fix it. Plus parts.

You need to unplug the temp sensor connector inspect the female terminals. I would then peel back the...
Forum: maintenance & nonperformance 12-03-2021, 02:34 AM
Replies: 8
Views: 1,367
Posted By ZVOLV
What year 760? The sensor you linked "fits my...

What year 760? The sensor you linked "fits my 1991 740 Turbo". If you have a 1989 or older 760, I think you have the wrong sensor.

You should always confirm the circuit is good before replacing...
Showing results 1 to 50 of 300

 
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