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Search: Posts Made By: bruce7
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Forum: 993 Forum
07-20-2016, 08:24 PM
Replies: 5
Views: 1,313
Posted By bruce7

Some info I found on removing and installing the...

Some info I found on removing and installing the starter bushing.

Disclaimer: I have not done this job so the information is not tested.

Three illustrations from a VW workshop manual:
...
Forum: 993 Forum
07-18-2016, 03:58 PM
Replies: 64
Views: 8,244
Posted By bruce7

To find the cause of the intermittent problem...

To find the cause of the intermittent problem (the misfire) I think that you
will need to use the data-logging capability of the scope to record some
system parameters while listening for the...
Forum: 993 Forum
07-17-2016, 11:43 PM
Replies: 64
Views: 8,244
Posted By bruce7

There is this DIY I did. The secondary ignition...

There is this DIY I did. The secondary ignition stuff is towards the end.

https://rennlist.com/forums/993-forum/859546-diy-changing-spark-plug-wires.html

Let me know if you have any questions....
Forum: 993 Forum
07-16-2016, 05:06 PM
Replies: 64
Views: 8,244
Posted By bruce7

Yes, also referred to as secondary ignition...

Yes, also referred to as secondary ignition waveforms. If there is a sealing
problem it would cause a compression issue and result in turbulence in
the cylinder and the spark voltage waveform will...
Forum: 993 Forum
07-15-2016, 05:32 PM
Replies: 64
Views: 8,244
Posted By bruce7

One more test I would add is to check the fuel...

One more test I would add is to check the fuel injector for #1 vs the others -bruce7

Sent via my iPhone
Forum: 993 Forum
07-15-2016, 04:52 PM
Replies: 64
Views: 8,244
Posted By bruce7

Glad you were able to make something out of the...

Glad you were able to make something out of the data.

As John Thornton illustrated in the pressure transducer case study video
back in post #42, it's good to have as many tests as possible to...
Forum: 993 Forum
07-13-2016, 02:44 AM
Replies: 64
Views: 8,244
Posted By bruce7

George, Thanks for the info on the misfire...

George, Thanks for the info on the misfire detection process. Very good
stuff. I agree that the approach using pressure transducers would be a
good next step. It's interesting that in the 1993...
Forum: 993 Forum
07-13-2016, 02:13 AM
Replies: 64
Views: 8,244
Posted By bruce7

George, Damn! That's a bummer. Now we...

George,

Damn! That's a bummer. Now we know. Thanks for digging into that.

-bruce7
Forum: 993 Forum
07-12-2016, 08:51 PM
Replies: 64
Views: 8,244
Posted By bruce7

Thanks for that link! :thumbup: I read...

Thanks for that link! :thumbup:

I read through the free preview they provide and that looks like an excellent
paper and reference that I want to have.

-bruce7
Forum: 993 Forum
07-12-2016, 04:10 PM
Replies: 64
Views: 8,244
Posted By bruce7

So if I follow you, the idea is to determine...

So if I follow you, the idea is to determine which cylinder is misfiring. And your
approach is to try and replicate what the DME does to calculate a misfire.

But is that really what the DME...
Forum: 993 Forum
07-12-2016, 12:49 AM
Replies: 64
Views: 8,244
Posted By bruce7

George, How are you thinking of using Excel?...

George,

How are you thinking of using Excel? I'm not an Excel user so can't offer
much help there. Can you graph the data using Excel? I'm guessing that
you want to see if there is a glitch...
Forum: 993 Forum
07-10-2016, 04:09 PM
Replies: 64
Views: 8,244
Posted By bruce7

From a private message I received, it's believed...

From a private message I received, it's believed that the PST2 does support
Mode 6. However, I haven't been able to confirm this since I myself don't
have access to a PST2 scan tool.

The...
Forum: 993 Forum
07-04-2016, 06:16 PM
Replies: 22
Views: 1,644
Posted By bruce7

I've always felt that if you have any money left...

I've always felt that if you have any money left after a 3-day weekend
you must've done something wrong.:cool:

-bruce7
Forum: 993 Forum
07-01-2016, 03:44 PM
Replies: 18
Views: 7,253
Posted By bruce7

Bobbyp, Yes the CCU came out easily. ...

Bobbyp,

Yes the CCU came out easily.

To confirm the tip shape is rounded:

...
Forum: 993 Forum
07-01-2016, 02:34 AM
Replies: 18
Views: 7,253
Posted By bruce7

Here is the Porsche part if you want to get it...

Here is the Porsche part if you want to get it for the radio removal:


https://cimg3.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/80-img_0457_a41f2bd33b8b9373037efeaca50a88a9395630aa.jpg

...
Forum: 993 Forum
06-28-2016, 03:34 PM
Replies: 12
Views: 1,648
Posted By bruce7

Here is what I found in the Bosch online catalog:...

Here is what I found in the Bosch online catalog:
...
Forum: 993 Forum
06-26-2016, 07:12 PM
Replies: 20
Views: 22,274
Posted By bruce7

Thanks phoneyman! Not working as an engineer...

Thanks phoneyman! Not working as an engineer now, however, I did
work for many years in the high tech industry as an engineer, mainly on the
software side.
Forum: 993 Forum
06-26-2016, 04:09 PM
Replies: 20
Views: 22,274
Posted By bruce7

Additional Testing at RPM

Additional Testing at RPM

As I mentioned in the previous post, the injector pulse width and spray time
will vary as it is adjusted by the DME after it has calculated the injector fuel
equation. ...
Forum: 993 Forum
06-23-2016, 07:47 PM
Replies: 64
Views: 8,244
Posted By bruce7

Mode 6 Diagnostics

George, I have been reading about Mode 6 diagnostic mode and was
wondering if your Porsche tester is able to read these codes?

Here's three articles on the Mode 6 diagnostic mode:
...
Forum: 993 Forum
06-22-2016, 02:59 PM
Replies: 64
Views: 8,244
Posted By bruce7

Checked into the question of whether or not you...

Checked into the question of whether or not you could modify the fuel
map and make it run richer at idle with a reprogramming shop and they
said basically no. If the car is misfiring at idle it...
Forum: 993 Forum
06-22-2016, 02:38 AM
Replies: 64
Views: 8,244
Posted By bruce7

George, Yes with the narrow-band O2 sensors in...

George, Yes with the narrow-band O2 sensors in closed-loop they will try to
keep the AFR to 14.7. I think chip reprogrammers will normally use the factory
idle fuel and ignition maps, but, there...
Forum: 993 Forum
06-21-2016, 01:05 AM
Replies: 64
Views: 8,244
Posted By bruce7

George, I have a couple of ideas on this to run...

George, I have a couple of ideas on this to run by you.

If I read the first post correctly, the PO had a chipped ECU in the car and
the engine idled smoothly yet pinged when accelerating. You...
Forum: 993 Forum
06-16-2016, 01:11 AM
Replies: 12
Views: 808
Posted By bruce7

The wiper relay (R42) is different from the DME...

The wiper relay (R42) is different from the DME relay (R53) and has a
different part number.

Attached is a page from the wiring diagram showing the relays and
their internal wiring.

...
Forum: 993 Forum
06-15-2016, 11:41 PM
Replies: 12
Views: 808
Posted By bruce7

If you want to eliminate the DME relay as the...

If you want to eliminate the DME relay as the reason why the car
won't start and run, you could do the "ByPass Test" which I describe
in this post:
...
Forum: 993 Forum
06-13-2016, 05:15 PM
Replies: 33
Views: 7,158
Posted By bruce7

Nile13, just had a thought that the graphite...

Nile13, just had a thought that the graphite spray might not be clear. Checked the specs on it and sure enough they say it's not clear. So don't think that would be a good choice. The 3M silicon...
Showing results 1 to 25 of 480
 
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