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Search: Posts Made By: ZVOLV
Forum: maintenance & nonperformance Yesterday, 04:04 PM
Replies: 11
Views: 160
Posted By ZVOLV
Jump 12v to the EGR solenoid to activate it and...

Jump 12v to the EGR solenoid to activate it and if the system is working the car should stumble.
Forum: maintenance & nonperformance Yesterday, 02:29 PM
Replies: 42
Views: 609
Posted By ZVOLV
I don't follow your work, but diagnosing a relay...

I don't follow your work, but diagnosing a relay circuit should be easy. You could also just bypass it.
Forum: maintenance & nonperformance Yesterday, 01:26 PM
Replies: 11
Views: 160
Posted By ZVOLV
EGR system inspection is a great suggestion. Make...

EGR system inspection is a great suggestion. Make sure the ports aren't clogged too.
Forum: maintenance & nonperformance Yesterday, 10:57 AM
Replies: 11
Views: 160
Posted By ZVOLV
A new cat will get you thru.

A new cat will get you thru.
Forum: maintenance & nonperformance 04-21-2018, 01:16 PM
Replies: 11
Views: 188
Posted By ZVOLV
The oscilloscope is my preferred tool. My Hantek...

The oscilloscope is my preferred tool. My Hantek scope was $80. Instead of spending $30 on fuel and sweating in the junkyard, one could test the sensor.

Another test method uses the multimeter:...
Forum: maintenance & nonperformance 04-21-2018, 01:06 PM
Replies: 15
Views: 353
Posted By ZVOLV
You have experienced "fretting". Temperature...

You have experienced "fretting". Temperature change, moisture, and vibration can cause microns of fretting. I "fixed" a circuit yesterday by removing dusty fuses, inspecting, then reinstalling them,...
Forum: maintenance & nonperformance 04-21-2018, 11:40 AM
Replies: 42
Views: 609
Posted By ZVOLV
"No starts" are easy to diagnose. I diagnosed two...

"No starts" are easy to diagnose. I diagnosed two no starts yesterday in 20 min each. This thread is taking too long!

It runs on ether?! Why isn't your fuel system working?

Got injector pulse...
Forum: maintenance & nonperformance 04-20-2018, 05:34 PM
Replies: 15
Views: 353
Posted By ZVOLV
Woot! $5 test light, wiring diagram, and...

Woot!

$5 test light, wiring diagram, and some poking around woulda been cheaper, right!?

So it runs?
Forum: maintenance & nonperformance 04-20-2018, 04:02 PM
Replies: 11
Views: 188
Posted By ZVOLV
Or test it first. Spend your money on tools...

Or test it first. Spend your money on tools instead.
Forum: maintenance & nonperformance 04-20-2018, 04:00 PM
Replies: 42
Views: 609
Posted By ZVOLV
Nice! Sounds like you are getting closer. ...

Nice! Sounds like you are getting closer.

On a relay ground circuit i wouldn't want to see more than 10 ohms resistance.

We are still confused about your claim about "0 ohms to ground on...
Forum: maintenance & nonperformance 04-20-2018, 01:34 PM
Replies: 42
Views: 609
Posted By ZVOLV
Ok nice. I'm sure you are getting better at...

Ok nice. I'm sure you are getting better at electrical diag already. I learned this stuff in my back yard while drinking beer and now I do it professionally.

Have you checked for power to the MAF...
Forum: maintenance & nonperformance 04-19-2018, 10:02 PM
Replies: 42
Views: 609
Posted By ZVOLV
Step one is get power to the injectors and then...

Step one is get power to the injectors and then work on the control side. I find it difficult to believe both sides of the circuit are bad. Ground side should be over 1000 ohms. I don't trust your...
Forum: maintenance & nonperformance 04-19-2018, 05:33 PM
Replies: 42
Views: 609
Posted By ZVOLV
It means he likely thinks the grounds at the fuel...

It means he likely thinks the grounds at the fuel rail are for the fuel injectors and they look good. I recently explained this to PromiseRing.
Forum: maintenance & nonperformance 04-19-2018, 10:35 AM
Replies: 42
Views: 609
Posted By ZVOLV
I recommend a wiring diagram and chase the...

I recommend a wiring diagram and chase the injector power circuit.

Yes, a bad injector relay would cause no power to the injectors. But these mid 80s 740s are notorious for bad wiring.

I'm...
Forum: maintenance & nonperformance 04-18-2018, 03:16 PM
Replies: 14
Views: 333
Posted By ZVOLV
I recommend a VDO blower and an OEM resistor.

I recommend a VDO blower and an OEM resistor.
Forum: maintenance & nonperformance 04-18-2018, 01:27 PM
Replies: 4
Views: 257
Posted By ZVOLV
Ha! Check engine light.... Start with...

Ha! Check engine light....

Start with inspecting cap, rotor, plugs, and wires. Spray them with water at night and look for arcing.
Forum: maintenance & nonperformance 04-18-2018, 01:25 PM
Replies: 42
Views: 609
Posted By ZVOLV
Put down the parts gun and pick up some tools, a...

Put down the parts gun and pick up some tools, a wiring diagram, and your thinking cap.
Forum: maintenance & nonperformance 04-18-2018, 10:10 AM
Replies: 10
Views: 1,415
Posted By ZVOLV
Pull the trans shield and look if the gap is...

Pull the trans shield and look if the gap is there when you are about 90 degrees from TDC. Much easier than pulling the starter.
Forum: maintenance & nonperformance 04-18-2018, 10:07 AM
Replies: 42
Views: 609
Posted By ZVOLV
And if you discover you have injector pulse, the...

And if you discover you have injector pulse, the next thing to do would be use the test light at the fuel pump positive wire while cranking.

Since it runs on ether, that's great. I work on trucks...
Forum: maintenance & nonperformance 04-17-2018, 07:37 PM
Replies: 42
Views: 609
Posted By ZVOLV
Test light the injector positive side wires to...

Test light the injector positive side wires to ground. Key on. Illuminate? If no, resistor wiring or injector relay wiring suspect.

Test light between the injector power and ground wires. Crank....
Forum: maintenance & nonperformance 04-17-2018, 06:01 PM
Replies: 42
Views: 609
Posted By ZVOLV
Bypass the resistor=fry your ECU injector driver...

Bypass the resistor=fry your ECU injector driver with greentop injectors.

^^^^He beat me to it.

Use a noid light and test light to diagnose the injector circuit.
Forum: maintenance & nonperformance 04-17-2018, 04:16 AM
Replies: 12
Views: 325
Posted By ZVOLV
Reman junk is commonly bad right out of the box...

Reman junk is commonly bad right out of the box or fails quickly. I have had to do alternators, power steering pumps, etc up to 4 times in a row before getting one that lasted.

A co-worker...
Forum: maintenance & nonperformance 04-16-2018, 12:04 PM
Replies: 10
Views: 534
Posted By ZVOLV
Air leaks are very common. I use a smoke machine.

Air leaks are very common. I use a smoke machine.
Forum: maintenance & nonperformance 04-14-2018, 03:58 PM
Replies: 15
Views: 554
Posted By ZVOLV
Your timing belt has no money?

Your timing belt has no money?
Forum: maintenance & nonperformance 04-14-2018, 03:56 PM
Replies: 15
Views: 353
Posted By ZVOLV
"No way!" Do basic electrical diag with a...

"No way!"

Do basic electrical diag with a test light. Do you have spark?

Crank sensor dead I water would cause a no spark and no injector pulse.
Forum: maintenance & nonperformance 04-14-2018, 12:15 PM
Replies: 2
Views: 168
Posted By ZVOLV
The two white wires are the heater positive and...

The two white wires are the heater positive and negative. Green is the signal.

Before replacement, check for 12v on one of the heater wires. A blown fuse for fuel pump and o2 heater circuit is...
Forum: maintenance & nonperformance 04-14-2018, 12:12 PM
Replies: 2
Views: 192
Posted By ZVOLV
Yep. Check your ground wire and other...

Yep. Check your ground wire and other connections. I just sputtered into the work bay with a broken ground wire on my 240.

Check your battery terminals.
Forum: maintenance & nonperformance 04-13-2018, 06:45 PM
Replies: 15
Views: 353
Posted By ZVOLV
Your LH relay could be acting up. Can you read...

Your LH relay could be acting up. Can you read codes?
Forum: maintenance & nonperformance 04-13-2018, 04:30 PM
Replies: 15
Views: 353
Posted By ZVOLV
My formal training and experience has trained me...

My formal training and experience has trained me to use a test light. I have found circuits that have 12v on a meter, but not enough current to operate the unit.

Noid light is a plug n play way to...
Forum: maintenance & nonperformance 04-13-2018, 09:58 AM
Replies: 17
Views: 453
Posted By ZVOLV
I have always had more problems getting lh2.2...

I have always had more problems getting lh2.2 cars thru emissions. The self adjusting fuel trim on 2.4 is convenient.
Forum: maintenance & nonperformance 04-13-2018, 12:40 AM
Replies: 15
Views: 353
Posted By ZVOLV
12v may be there but not enough current. Have you...

12v may be there but not enough current. Have you tried a noid light or test light?

Resistor pack on left inner fender for the injectors. The wiring cab go bad. Same with injector relay on left...
Forum: maintenance & nonperformance 04-12-2018, 10:46 PM
Replies: 3
Views: 186
Posted By ZVOLV
How do you know the pump isn't working? Are you...

How do you know the pump isn't working? Are you speaking of the main and/or the tank pump.
Forum: maintenance & nonperformance 04-12-2018, 10:34 PM
Replies: 15
Views: 353
Posted By ZVOLV
I didn't read the wall of text, but click my sig.

I didn't read the wall of text, but click my sig.
Forum: maintenance & nonperformance 04-12-2018, 10:33 PM
Replies: 17
Views: 453
Posted By ZVOLV
Wow. Nailed it.

Wow. Nailed it.
Forum: maintenance & nonperformance 04-12-2018, 06:58 PM
Replies: 36
Views: 1,151
Posted By ZVOLV
Nice! So ignition timing was retarded? I have...

Nice! So ignition timing was retarded? I have seen engines completely fail to rev when the ignition is pulled way too far back.
Forum: maintenance & nonperformance 04-12-2018, 01:45 PM
Replies: 36
Views: 1,151
Posted By ZVOLV
Cam and ignition timing correct?

Cam and ignition timing correct?
Forum: maintenance & nonperformance 04-12-2018, 11:38 AM
Replies: 17
Views: 453
Posted By ZVOLV
Nice. That 86 740 I had ended up failing smog...

Nice. That 86 740 I had ended up failing smog again for NOX and evap leak developed too so I crushed it. Interesting part, it had stalling on startup issues. O2 sensor was newish, but I saw it pegged...
Forum: events 04-12-2018, 11:34 AM
Replies: 211
Views: 12,466
Posted By ZVOLV
Looks like will be driving up from SD for this.

Looks like will be driving up from SD for this.
Forum: maintenance & nonperformance 04-12-2018, 10:17 AM
Replies: 5
Views: 313
Posted By ZVOLV
Those terminals sound like the three terminals...

Those terminals sound like the three terminals for the hall sensor.

I like using an oscilloscope to measure the output of such sensors. I get a nice visual of what's going on.

Is your ignition...
Forum: maintenance & nonperformance 04-11-2018, 01:14 PM
Replies: 17
Views: 453
Posted By ZVOLV
Here is the saga. ...

Here is the saga.

http://forums.tbforums.com/showthread.php?t=330758

I'm qualified now to take the smog inspector/ smog repair dude training since I'm an ASE Master Technician and L1 ...
Forum: maintenance & nonperformance 04-11-2018, 01:08 PM
Replies: 17
Views: 453
Posted By ZVOLV
I had leaking injectors cause 6% CO on my 86 740...

I had leaking injectors cause 6% CO on my 86 740 GLE.

Good catch on the o2 sensor. Stuck at .65 could mean bad sensor. Snap throttle may help wake it back up. It could be fouled, however, from you...
Forum: maintenance & nonperformance 04-11-2018, 10:26 AM
Replies: 5
Views: 313
Posted By ZVOLV
I wrote that in haste. You will likely have no...

I wrote that in haste. You will likely have no pulse on the negative based on your report so far.

There are ways you could check the circuits with a meter, but I can't tell you what the values...
Forum: maintenance & nonperformance 04-10-2018, 01:59 PM
Replies: 5
Views: 313
Posted By ZVOLV
Test light to coil negative to ground. Key on....

Test light to coil negative to ground. Key on. Light up? Crank. Blink?
Forum: maintenance & nonperformance 04-09-2018, 07:28 PM
Replies: 9
Views: 386
Posted By ZVOLV
It needs a cat. The p0420 code has always been a...

It needs a cat. The p0420 code has always been a true code in my experience.
Forum: maintenance & nonperformance 04-09-2018, 04:18 PM
Replies: 18
Views: 666
Posted By ZVOLV
Counter hold. There should be an alien hole or...

Counter hold. There should be an alien hole or hex head. Or load it up with a jack. Or try you luck with an impact. Thread locker can't really hurt either.
Forum: maintenance & nonperformance 04-09-2018, 02:54 PM
Replies: 77
Views: 1,554
Posted By ZVOLV
Speedo sensor puts out a measurable AC voltage.

Speedo sensor puts out a measurable AC voltage.
Forum: maintenance & nonperformance 04-09-2018, 11:44 AM
Replies: 9
Views: 413
Posted By ZVOLV
Years ago Herman at Cherry Turbos built me a 16g...

Years ago Herman at Cherry Turbos built me a 16g that was great.
Forum: maintenance & nonperformance 04-09-2018, 11:14 AM
Replies: 9
Views: 386
Posted By ZVOLV
Misfires bad enough to blink a CEL mean enough to...

Misfires bad enough to blink a CEL mean enough to possibly damage a cat. The raw fuel ignites in the kitty and can burn it up. If there are no misfire codes, throw a cat at it. I did one on my 2001...
Forum: maintenance & nonperformance 04-08-2018, 02:03 PM
Replies: 9
Views: 466
Posted By ZVOLV
Take off the intake. It takes 5 min or less with...

Take off the intake. It takes 5 min or less with good tools.
Forum: maintenance & nonperformance 04-08-2018, 01:01 PM
Replies: 33
Views: 1,449
Posted By ZVOLV
Try running a redundant ground from the case to...

Try running a redundant ground from the case to the engine or batt negative using jumper cables or large guage wire.

Have you done voltage drop tests?
Showing results 1 to 50 of 300

 
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