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Search: Posts Made By: ischmitz
Forum: Porsche 911 Technical Forum 01-22-2020, 03:29 PM
Replies: 50
Views: 2,284
Posted By ischmitz
To OP: I was wondering if there is any updates on...

To OP: I was wondering if there is any updates on the fate of your engine?
Forum: Porsche 911 Technical Forum 01-15-2020, 10:16 AM
Replies: 317
Views: 57,778
Posted By ischmitz
Just to re-cap. When the 3.2 DME was developed...

Just to re-cap. When the 3.2 DME was developed there were several challenges/restrictions in terms of what electronics was capable off and what injectors were available at the time.

Injectors...
Forum: Porsche 911 Technical Forum 01-13-2020, 04:14 PM
Replies: 50
Views: 2,284
Posted By ischmitz
Keep us posted. I agree with others that feeling...

Keep us posted. I agree with others that feeling around the oil drain and taking the sump plate off makes sense at this stage. IF you find pieces all bets are off but I keep fingers crossed youíre...
Forum: Porsche 911 Technical Forum 01-13-2020, 01:59 PM
Replies: 50
Views: 2,284
Posted By ischmitz
Well - I am no expert but here is what I'd do....

Well - I am no expert but here is what I'd do. Let others chime in:

Install the new oil line, fill up with oil, disconnect main coil primary and check if you can build oil pressure when you crank...
Forum: Porsche 911 Technical Forum 01-13-2020, 01:43 PM
Replies: 50
Views: 2,284
Posted By ischmitz
For what it's worth one of the oil line from the...

For what it's worth one of the oil line from the engine to the external thermostat let go at 50 mph on a spirited drive. See here:...
Forum: Porsche 911 Technical Forum 09-13-2019, 03:58 PM
Replies: 20
Views: 1,124
Posted By ischmitz
The center terminal in the 3-pin connector is...

The center terminal in the 3-pin connector is switched +12V when the ignition is on. It powers the box.
Forum: Porsche 911 Technical Forum 09-11-2019, 10:32 AM
Replies: 7
Views: 710
Posted By ischmitz
Also measure the CHT once the engine is warmed...

Also measure the CHT once the engine is warmed up. It is supposed to go lower in resistance and that makes the DME lean out the mixture.

The older one-wire sensors had a tendency to fail because...
Forum: Porsche 911 Technical Forum 09-11-2019, 10:24 AM
Replies: 20
Views: 1,124
Posted By ischmitz
The tests in the car: - turn ignition on...

The tests in the car:

- turn ignition on make sure you hear the box whine. If not disconnect the 3-pin plug and check inside the 3-pin plug. The center pin carries +12V to chassis with the...
Forum: Porsche 911 Technical Forum 09-11-2019, 09:50 AM
Replies: 20
Views: 1,124
Posted By ischmitz
What is your concern with your box. Is your car...

What is your concern with your box. Is your car working or do you have a "missing spark" situation.

Cheers,
Ingo
Forum: Porsche 911 Technical Forum 08-06-2019, 12:46 PM
Replies: 5
Views: 519
Posted By ischmitz
incorrect - the 2nd stage of the DME relay closes...

incorrect - the 2nd stage of the DME relay closes when the sensors see rotation or when the key is in START. Either one by itself makes it close and turn the fuel pump on. However, there is fuel...
Forum: Porsche 911 Technical Forum 08-01-2019, 10:17 AM
Replies: 7
Views: 653
Posted By ischmitz
The first check is to make sure when the throttle...

The first check is to make sure when the throttle is all the way closed the micro-switch on the throttle body is closing. This signals the computer that it needs to stabilize idle.

In your case if...
Forum: Porsche 911 Technical Forum 07-14-2019, 08:45 PM
Replies: 17
Views: 1,194
Posted By ischmitz
a working Bosch CDI makes a 3.6kHz whine noise....

a working Bosch CDI makes a 3.6kHz whine noise. It's a clean sine wave tone. I would not consider this a buzz sound as the tune is much higher. More like the test tone from an old TV station.

If...
Forum: Porsche 911 Technical Forum 05-09-2019, 05:55 PM
Replies: 13
Views: 791
Posted By ischmitz
Itís the opposite: A jumper means a short (0 and...

Itís the opposite: A jumper means a short (0 and simulates a HOT engine. Disconnected it is infinite resistance and simulates a stone-cold engine.

When the DME sees HOT is leans mixture to normal...
Forum: Porsche 911 Technical Forum 05-08-2019, 05:34 AM
Replies: 13
Views: 791
Posted By ischmitz
There are lots of threads detailing how to...

There are lots of threads detailing how to systematically troubleshoot.

- check that you have power at the DME (ICV vibrates with ignition on). If not check alarm or ignition switch
- check...
Forum: Porsche 911 Technical Forum 05-07-2019, 06:51 AM
Replies: 5
Views: 343
Posted By ischmitz
I respectfully disagree with above. The latest...

I respectfully disagree with above. The latest stock Bosch/Porsche code that came in the 8k EPROM in the 28-pin sockets is much more advanced and shows better drivability compared to the earlier code...
Forum: Porsche 911 Technical Forum 04-23-2019, 12:50 PM
Replies: 25
Views: 868
Posted By ischmitz
Yes, thatís the test. Check that you hear/feel...

Yes, thatís the test. Check that you hear/feel the click in the engine bay when the throttle is all the way closed. Maybe itís a mechanical adjustment. If not replace the switch.
Forum: Porsche 911 Technical Forum 04-23-2019, 12:22 PM
Replies: 25
Views: 868
Posted By ischmitz
Absolutely will affect cold start. With the DME...

Absolutely will affect cold start. With the DME controlled engine youíre not supposed to touch the accelerator and only turn the key. Everything else is done by the DME. If it doesnít see the idle...
Forum: Porsche 911 Technical Forum 04-23-2019, 10:33 AM
Replies: 25
Views: 868
Posted By ischmitz
Just to make sure - the ICV is vibrating when the...

Just to make sure - the ICV is vibrating when the engine isn't running and doing the little jerk-motion about once per second, right? That is just to confirm it is controlled properly by the DME and...
Forum: Porsche 911 Technical Forum 04-12-2019, 03:02 PM
Replies: 7
Views: 518
Posted By ischmitz
The 12V to the center and GND to the case make it...

The 12V to the center and GND to the case make it whine. So far so good. Ohm from coil contact in the 3-pin harness connector to chassis GND and make sure you see the coil primary resistance of...
Forum: Porsche 911 Technical Forum 04-12-2019, 11:37 AM
Replies: 7
Views: 518
Posted By ischmitz
3-pin are really easy to troubleshoot. Connect a...

3-pin are really easy to troubleshoot. Connect a spark plug directly to the coil HV output and ground it to the engine. Then close the points and open them again and it should release a spark. If not...
Forum: Porsche 911 Technical Forum 02-18-2019, 03:40 PM
Replies: 61
Views: 3,240
Posted By ischmitz
If there was no massive ground path from the...

If there was no massive ground path from the transmission/motor package to the chassis the car would not start at all. Remember the battery has its negative pole (GND) connected to the chassis only....
Forum: Porsche 911 Technical Forum 02-15-2019, 03:58 PM
Replies: 25
Views: 1,278
Posted By ischmitz
Is it running on all cylinders? (are all exhaust...

Is it running on all cylinders? (are all exhaust ports warm after 20 seconds of running from cold)?
Forum: Porsche 911 Technical Forum 02-05-2019, 07:09 PM
Replies: 61
Views: 3,240
Posted By ischmitz
What problem are you trying to fix. Is it poor...

What problem are you trying to fix. Is it poor idle or a dead-spot?

If it is poor idle please verify that the ICV vibrates and makes a small jerk move every second when the ignition is ON but the...
Forum: Porsche 911 Technical Forum 01-31-2019, 02:22 PM
Replies: 26
Views: 1,388
Posted By ischmitz
To the original poster: it would be nice to have...

To the original poster: it would be nice to have a title that is a little more descriptive. It will give you a lot of more focused answers quicker. That being said there are lots of 3.2 no-start...
Forum: Porsche 911 Technical Forum 01-28-2019, 07:45 PM
Replies: 25
Views: 1,278
Posted By ischmitz
Bridge pin B an C with a paper clip or similar...

Bridge pin B an C with a paper clip or similar and then adjust idle to 880 RPM. Once you remove the jumper there should be no change in idle speed.
...
Showing results 1 to 25 of 500

 
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